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DMF-Z Right Angle Electromagnetic Pulse Valve Product introduction:

The electromagnetic pulse valve is imported from abroad (also known as the diaphragm valve) is the compressed air "switch" of the pulse bag filter dust cleaning system is controlled by the output signal of the pulse injection controller, and the filter bag is cleaned by the row (chamber). Ash, so that the dust collector's resistance is maintained within the set range, in order to ensure that the dust collector processing capacity and vacuum efficiency.

DMF-Z Right Angle Electromagnetic Pulse Valve Features:

The DMF-Z electromagnetic pulse valve is a right-angle valve. The angle between the inlet and outlet is 90°. It is suitable for the mounting connection between the helium cylinder and the dust blower tube. The gas flow is unobstructed, and it can provide the turbulent gas flow that meets the requirements.

DMF-Z Right Angle Electromagnetic Pulse Valve working principle:

The diaphragm divides the electromagnetic pulse valve into two air chambers, front and rear. When the compressed air is turned on, the compressed air enters the rear air chamber through the throttle hole. At this time, the pressure of the air chamber presses the diaphragm against the output of the valve. The pulse valve is in the "closed" state.

The electric signal of the pulse injection controller causes the electromagnetic pulse valve armature to move, the air chamber vent hole opens after the valve, the rear chamber quickly loses pressure, the diaphragm moves back, the compressed air is blown through the valve outlet, and the electromagnetic pulse valve is "opened" status.

Pulse injection control instrument electrical signal disappeared, electromagnetic pulse valve armature reset, after the air chamber vent hole closed, the rear chamber pressure increased so that the diaphragm close to the valve output, the electromagnetic pulse valve is in the "closed" state.

If you are looking for diaphragm valve manufacturers, Senotay can be a competitable one among those diaphragm valve suppliers. Contact us to get more information about our products!

The radiator thermostatic balancing valve is a self-operated constant temperature flow control valve mounted on the radiator. It is composed of a thermostatic valve body and a temperature regulating device for air temperature sensing. The principle of action is that the opening of the thermostatic valve body is automatically controlled to change the amount of hot water passing through the radiator. When the room temperature is lower than the set temperature value, the radiator balancing valve automatically opens (or gradually increases) the radiator to heat the room until the room temperature reaches the set value. When the temperature of the room rises, the temperature sensor pack expands, causing the valve to gradually close (or close), and the heat sink will reduce the heating speed (or stop heating). Simply put, the main function is energy saving and comfort. However, many ordinary customers only use ordinary temperature control valves without a temperature pack, which cannot be automatically turned on or off. It is recommended that everyone adjust the indoor temperature and ensure that the indoor temperature is always at the set temperature by adjusting the hot water flow into the radiator. This thing is necessary for today's energy-efficient buildings. Designing houses and public buildings is a form of radiator heating. At this stage, it is necessary to use a three-way connection with a temperature control valve.

Zheng feng brand is one of the most professional group valve manufacturers in china. And we sincerely invite and welcome people from all around the world to invest and create more values together.

The difference between the two balancing valves is that the thermostatic balancing valve
manually adjusts the opening degree of the thermostat valve, while the auto balancing valve automatically adjusts the opening degree of the thermostat valve by using temperature sensors.

Thermostatic balancing valve (referred to as constant temperature valve) is an energy-saving product. The principle is to control the temperature of the valve by using the temperature sensor in the temperature control valve head. When the room temperature rises, the temperature sensor expands due to thermal expansion and compresses the stem to make the valve close small. When the room temperature drops, the temperature sensor shrinks due to cooling, and the stem springs back to open the valve. Therefore, when the room has other auxiliary heat sources (sunlight, other heaters) and the room temperature is higher than the set temperature, the valve automatically closes down, the water intake of the radiator decreases, ultimately saving the heat of heating.
The setting temperature of the auto balancing valve can be adjusted artificially. The constant temperature valve will automatically control and adjust the water quantity of the radiator according to the set requirements, so as to achieve the purpose of controlling the indoor temperature. Temperature control in user's room is realized by constant temperature control valve of radiator. The constant temperature control valve of radiator is composed of a constant temperature controller, a flow regulating valve and a pair of connectors. The core component of the constant temperature controller is the sensor unit, namely the temperature package. The temperature chamber can induce the volume change caused by the change of ambient temperature, drive the valve core to produce displacement, and then adjust the water quantity of the radiator to change the heat dissipation of the radiator.

Zheng feng is one of the most professional check valve manufacturers china. And we sincerely invite and welcome people from all around the world to invest and create more values together.

Balancing valve types

1. Static Balance Valve: It is also called Balance Valve, Manual Balance Valve, Digital Lock Balance Valve, Double Position Regulating Valve, etc. It changes the flow resistance through the valve by changing the clearance (opening) between the spool and the seat to achieve the purpose of regulating the flow rate. Its object of action is the resistance of the system, which can distribute the new water in proportion to the design calculation. Each branch increases or decreases in proportion at the same time, and still meets the flow demand of part of the current load.

2. Dynamic flow balance valve: It is also called self-operated flow control valve, self-operated balance valve, constant flow valve, automatic balance valve, etc. It automatically changes resistance coefficient according to the change of system working condition (pressure difference). In a certain range of pressure difference, the flow through can be effectively controlled to maintain a constant value, that is, when the pressure difference before and after the valve increases, the flow through the valve can be maintained by the action of automatic closing small. On the contrary, when the pressure difference decreases, the valve opens automatically and the flow rate remains constant.

3. Self-operated differential pressure control valve: it is also known as dynamic differential pressure balance valve, differential pressure controller, stabilized variable synchronizer, differential pressure balance valve, etc. It uses differential pressure to adjust the opening of the valve, and uses the change of pressure drop of the valve core to compensate for the change of pipeline resistance, so as to keep the differential pressure basically unchanged when the working condition changes. Its principle is that it can effectively control the constant pressure difference of the controlled system within a certain flow range. That is to say, when the pressure difference of the system increases, it can ensure that the pressure difference of the controlled system increases through the automatic closing of the valve. On the contrary, when the pressure difference decreases, the valve opens automatically and the pressure difference remains constant.

Zheng feng is one of the most professional water gate valve manufacturers in china. And we sincerely invite and welcome people from all around the world to invest and create more values together.

The radiator thermostatic balancing valve is a self-operated constant temperature flow control valve mounted on the radiator. It is composed of a thermostatic valve body and a temperature regulating device for air temperature sensing. The principle of action is that the opening of the thermostatic valve body is automatically controlled to change the amount of hot water passing through the radiator. When the room temperature is lower than the set temperature value, the radiator balancing valve automatically opens (or gradually increases) the radiator to heat the room until the room temperature reaches the set value. When the temperature of the room rises, the temperature sensor pack expands, causing the valve to gradually close (or close), and the heat sink will reduce the heating speed (or stop heating). Simply put, the main function is energy saving and comfort. However, many ordinary customers only use ordinary temperature control valves without a temperature pack, which cannot be automatically turned on or off. It is recommended that everyone adjust the indoor temperature and ensure that the indoor temperature is always at the set temperature by adjusting the hot water flow into the radiator. This thing is necessary for today's energy-efficient buildings. Designing houses and public buildings is a form of radiator heating. At this stage, it is necessary to use a three-way connection with a temperature control valve.

Zhengfeng is one of the most professional control valve manufacturers in china in China. And we sincerely invite and welcome people from all around the world to invest and create more values together.

Hydraulic balancing valve, also known as automatic balance valve, flow control valve, flow controller, dynamic balance valve, automatic flow valve. Hydraulic balance valve is an intuitive and simple flow control device. The application of hydraulic balancing valve in pipeline network can directly set the flow rate according to the design. The valve of automatic balancing valve can automatically eliminate the flow deviation caused by residual pressure head and pressure fluctuation of pipeline under the action of water. No matter how the system pressure changes, the set flow rate remains unchanged. These hydraulic balancing valve functions(automatic flow balancing valve) make the flow regulation of pipeline network complete at one time, and make the work of network regulation simple flow distribution, effectively solve the hydraulic imbalance of pipeline network.Hydraulic balancing valve is a new type of regulating valve. Compared with manual control valve, it has the advantage of automatic regulation. Compared with the electric control valve, the advantage of the hydraulic balancing valve is that it does not need external power. The application practice has proved that in closed water circulation system (such as hot water heating system, air conditioning refrigeration system), the correct use of hydraulic balance valve can easily realize the flow distribution of the system, realize the dynamic balance of the system, greatly simplify the commissioning work of the system, and stabilize the working state of the pump. Therefore,hydraulic balance valve (automatic flow valve) has a broad application prospect in heating and air conditioning engineering.

Zhengfeng is one of the most professional water gate valve manufacturers in China. And we sincerely invite and welcome people from all around the world to invest and create more values together.

Dynamic flow balancing valves are also known as self-operated flow control valves, self-operated balancing valves, constant flow valves, and automatic balancing valves. It automatically changes the drag coefficient according to changes in system operating conditions. Within a certain pressure difference range, the flow rate can be effectively controlled to maintain a constant value, that is, when the pressure difference between the front and the back of the valve is increased, the flow can be kept not increased by the automatic closing action of the valve. Conversely, when the pressure difference is reduced, the valve automatically opens and the flow remains constant. However, when the pressure difference is less than or greater than the normal working range of the valve, it cannot provide an additional pressure head after all, and the flow rate of the valve to the fully open or fully closed position is still lower or higher than the set flow rate.

Auto balancing valve , also known as dynamic flow balancing valve, flow control valve,dynamic balancing valve, constant flow dynamic balancing valve. The automatic flow balance valve controls the flow through the valve by automatically changing the overflow area of the spool and adapting to the pressure changes before and after the valve. Its flow rate can be set at the production plant, or it can be set on site or electronically adjusted as required.

The automatic flow balancing valve is actually a constant flow valve that keeps the flow constant. Its function is: when some terminal equipment such as fan coil unit, fresh air unit and other control valves in the system adjust with the change of air conditioning load, resulting in the change of pressure in the pipeline network, so that the flow of other terminal equipment remains unchanged, still consistent with the design value.

According to the different flow setting modes, automatic flow balancing valves can be divided into two categories: fixed flow type and field set flow type.

Advantages and characteristics

Dynamic flow balancing valve enables the valve bile to change according to the pressure difference of the water system from time to time, ensuring that it will not exceed the original set water flow and absorb excessive pressure difference, thus realizing the automatic balance of pressure and flow of the whole water system. Therefore, using it has the following benefits.

For owners and construction units:

(1) There is no need for system debugging: it can save you a lot of time and shorten the completion date;

(2) There is no need to install the same process management: it can increase the area and space used for you, save installation and material costs;

(3) Easy to use: the water system balance will not be affected by the phased completion of the project installation or the phased use of the equipment;

(4) Convenient change: When water systems in some areas need to be redesigned, the design and balance of water systems in other areas will not be affected.

(5) Reduce power consumption: As the whole water system is balanced, the refrigeration units (boilers, heat exchangers) and pumps are guaranteed to operate in the best working state, which has obvious energy-saving effect;

(6) Reduce wear and waste: to ensure that water flow will not exceed the original design, to ensure the durability of all equipment, to avoid excessive flow caused by copper pipe loss;

(7) Improving safety: Because the flow balance of water system is automatic, the possibility of destructive regulation is eliminated.

(8) For the designer, the workload is reduced: there is no need to calculate the resistance of the whole pipeline to accelerate the design speed;

(9) It is possible to use the different program system boldly: save pipes, corresponding materials and installation costs, and transfer the work of the balancing hydraulic system to the dynamic flow balancing valve to complete. Many other troubles caused by unbalanced water systems can be avoided.

Working principle

Highly controlled and efficient building environment requires system design engineers to endow novel design concepts in their design. Because of the increasing use of various kinds of fluid control systems, especially the combination of temperature control devices and regional control functions, the use of static balance valves is out of date.

The automatic balancing valve combines innovative design and provides a complete solution to the hydraulic balancing system with maximum flexibility. The original design of the automatic balancing valve is a balancing valve specially designed for refrigeration and heating systems. The use of automatic control valve gallbladder ensures that the flow rate is the designed flow rate and remains constant even in the case of pressure fluctuation.

Zhengfeng is one of the most professional china check valve manufacturers. And we sincerely invite and welcome people from all around the world to invest and create more values together.

Description of Floating Ball Valve:

ZECO floating ball valve has two seats supporting the ball. Under medium pressure, the ball can be pressed tightly to the sealing surface for sealing at the outlet end. ZECO floating ball valve is suitable for the condition of temperature from 196 ℃ to 200 ℃, size from 1/2 "to 12", pressure from Class 150 to Class 1500.

Features of Floating Ball Valve:

1. ZECO floating ball valve has the function of indicating switch. The ball, stem and handle are the moving parts of the floating ball valve. ZECO design changes the top of the stem into the flat square structure, This provides a clear indication of the valve in open position during service when the handle is parallel to the line; When the handle is perpendicular to the line, indicate that the valve is closed;
2. ZECO floating ball valve is equipped with a locking device. ZECO adds two limit screws in the packing gland and coordinates the switch locating tab with a lock hole to ensure the damage of the valve caused by excessive opening, On the other hand, it is guaranteed that the valve can be locked in the fully open or fully closed state and cannot be operated by other personnel wrongly;

3. ZECO floating ball valve with the valve stem blow out proof structure, in order to prevent the maintenance of the valve, the pressure of the medium to stem the damage to the maintenance personnel, ZECO set a convex platform at the bottom of the stem structure, on the one hand, to ensure the stem will not be out of the body, on the other hand ensure even packing damage, the valve stem convex sets and close contact between the body and will not lead to a medium large leaking out;

4. ZECO floating ball valve is equipped with anti-static device, friction between the ball, ptfe and other non-metallic materials will generate electrostatic accumulation on the ball, without preventing the danger of electrostatic spark caused by the working condition, ZECO set up an anti-static device at the valve stem, which can export the static electricity through the valve stem.

As a professional china valve supplier, ZECO Valve Group, founded in 1991 located in Shanghai, Yancheng, Wenzhou with focus on manufacturing international standard valve. Contact us to know more about float ball valve price!

Balanced trim control valve are usually divided into static balance valves, dynamic flow balance valves and dynamic differential pressure balance valves.
A. Static balancing valves are also called manual balancing valves, digital locking balancing valves, and butterfly balancing valves and so on. They change the opening of the valve core and seat to change the flow resistance of the valve in order to achieve the purpose of regulating the flow. Their function is to balance the flow of water according to the designed proportion, increase and decrease the branches at the same time in proportion, and still meet the current climate needs of part of the load flow. Quantity demand plays a role of heat balance.
B. Dynamic flow balance valve is also called self-operated flow control valve, self-operated balance valve, constant flow valve, automatic balance valve, etc. The self-operated flow control valve automatically changes the resistance coefficient according to the change of system working condition. Within a certain range of pressure difference, it can effectively control the flow through and maintain a constant value. That is, when the pressure difference between the front and the back of the valve increases, that the flow through the action of small automatic closure of the valve can keep the flow constant. On the contrary, when the pressure difference decreases, the valve opens automatically and the flow remains constant. However, when the pressure difference is smaller or larger than the normal working range of the valve, it can not provide additional pressure head after all. At this time, the flow of the valve to the full open or closed position is still lower or higher than the set flow.
C. Dynamic differential pressure balancing valve, also known as self-operated differential pressure control valve, differential pressure controller, voltage regulator synchronizer, differential pressure balancing valve, etc. It uses differential pressure to adjust the opening of the valve, and uses the change of pressure drop of the valve core to compensate for the change of pipeline resistance, so as to keep the differential pressure basically unchanged when the working condition changes. Its principle is within a certain flow rate range, and it can be effective. Controlling the pressure difference of the controlled system is constant, that is, when the pressure difference of the system increases, it can ensure that the pressure difference of the controlled system increases through the automatic closing action of the valve. On the contrary, when the pressure difference decreases, the valve opens automatically and the pressure difference remains constant.

Zhengfeng is one of the most professional control valve manufacturers in china in China. And we sincerely invite and welcome people from all around the world to invest and create more values together.

Description of Cryogenic Gate Valve:

The main material of ZECO cryogenic gate valve is selected. Considering from the metallographic aspect, in addition to austenitic steel, copper and aluminum with face centered cubic lattice, general steel will appear low temperature brittleness at low temperature, thus reducing the strength and service life of the valve. When the temperature is higher than -100℃, choose ferritic steel; when the temperature is lower than -100℃, choose austenitic steel; low pressure and small diameter valves can choose copper and aluminum and other materials. Stem and fastener is selected, when the temperature is higher than -100℃, stem and bolt materials adopt Ni, Cr-Mo alloy steel, through appropriate heat treatment, to improve tensile strength and prevent thread bite. Austenitic stainless steel is used when the temperature is higher than -100℃. Low hardness of 18-8 acid resistant steel will cause mutual abrasion between stem and packing, causing leakage of packing.Therefore, the stem surface must be hard chrome plated (thickness 0.04-0.06mm), or nitride and nickel-phosphorous plated to improve surface hardness.In order to prevent nuts and bolts from biting to death, the nuts are generally made of Mo steel or Ni steel and coated with molybdenum disulfide on the surface of the threads.

As one of the most professional  cryogenic butterfly valve manufacturers in China, our Cryogenic Gate Valve’s features as below:

1. The valve body of ZECO cryogenic gate valve is able to withstand expansion and contraction due to temperature changes without permanent deformation of the seat structure due to temperature changes;
2. The bonnet of ZECO cryogenic gate valve is constructed with a long neck bonnet to protect the stuffing box.The long neck bonnet design also facilitates winding of cooling material;
3. ZECO cryogenic gate valve uses flexible wedge or open wedge. These structures maintain a reliable seal regardless of temperature;
4. The low temperature properties of the material, such as compression resilience, tightening force, tightening pressure distribution and stress relaxation, are taken into account.

As a professional valve factory,  ZECO Valve Group focus on manufacturing international standard valve. Contact us to know more!

Are you looking for a professional butterfly valve supplier? Butterfly valve is operated through the 90 degree rotation of the butterfly plate and can be used in the pipeline for regulating and stopping media. The disc of the butterfly valve is perpendicular to the direction of medium flow. The user can adjust the flow of medium by opening or closing the butterfly plate.

Butterfly valves are widely used in various industrial fields because of their small size, low cost and convenient installation. Butterfly valves are divided into three categories, the center line china butterfly valve because its stem does not deviate from the center and named. With a rubber seat and no stem packing, the seal is achieved by matching butterfly plate and rubber seat, usually for the soft seal structure for low-pressure water treatment industry and Marine water system.

Double offset butterfly valves: because of its stem axis deviation from center line butterfly plate and valve body, and named, in the open when the butterfly disc can quickly out of the seat, and reduces the open torque, the maximum double offset butterfly valve can adopt resilient sealing structure to metal seal structure, the metal seal structure can improve the use of under high temperature conditions, so the double offset, also known as high performance butterfly valve.

Triple offset butterfly valve: because on the basis of the double offset butterfly disc the sealing surface of the conical cylinder axis and axis deviation from ontology, through position change to torsion, solves the problem of high temperature and high pressure, at the same time through the seat contact area of the structure of the pressure to achieve sealing effect, make the medium pressure, the greater the pressure is, the greater the contact area, solved the difficult problem of metal seal butterfly valve zero leakage.

ZECO Valve Group, founded in 1991 located in Shanghai, Yancheng, Wenzhou with focus on manufacturing international standard valve. Contact us to know more!

Material of a105 valve:

As a professional china valve supplier, ZECO Valve Group, founded in 1991 located in Shanghai, Yancheng, Wenzhou with focus on manufacturing international standard valve. Contact us to know more!

Description of 4 Inch Butterfly Valve:

ZECO 4 inch butterfly valve is made of body, disc, stem, seat, stuffing box, gear etc. ZECO butterfly valve is the most commonly used size on small pipelines, so there is a problem of stocking. Problems when stocking is almost the same with preparation of delivery. Time is the key factor, usually gate valve stocking period is decided by its sealing material. If the valve has to be stocked for several weeks or months, better stocking conditions are needed. Valve is usually stocked indoor and its stocking ambient temperature shall be higher than dew point. If valves are stocked outdoor, support the valve to make sure it does not contact the earth, at the same time, water-proof cover shall be added to the valve.

Features of 4 Inch Butterfly Valve:

1. ZECO 4 inch butterfly valve are easily maintained. At any time pay attention to the sealing surface and shaft seal, When the sealing surface has abrasion or leakage, Generally, use the pressed seal of the screw plate to resolve, when the leakage occurred in the larger, the inner ring can be adjusted plus-one-chip be resolved, if there is damage to seals, plate seals can be removed, the replacement of seals, when the seal leakage, adjust packing gland or seal ring replacement;
2. The Double offset design of ZECO 4 inch butterfly valve is less abrasion, excellent sealing capacity;
3. The limit switch device of ZECO 4 inch butterfly valve ensure right position of open / close;
4. The body, disc and stem of ZECO 4 inch butterfly valve have sufficient strength and flexibility, sealing can be changed inside the valve.

Do you want to know 4 inch butterfly valve price? As a professional valve factory,  ZECO Valve Group focus on manufacturing international standard valve. Contact us to know more!

Description of 12 Inch Gate Valve:

The valve body of ZECO 12 inch gate valve is straight through the structure, which is similar to the straight pipe in the fully open state, to ensure the minimum flow resistance and swirling flow, and reduce the cost on the user's pipeline. There are two ways to connect the valve body and bonnet, one is the bolt connection of valve body bonnet, the other is the pressure self-sealing structure, the interior of the valve body of both kinds of structure is the same, there is a guide rail to allow the gate fixed movement, not caused by deviation from the impact of sealing problems. Bonnet and bracket are integral and split, depending on the size of the gate valve, usually 10 "or less is one piece only bonnet & yoke and 10" or more is bonnet yoke split.

Features of 12 Inch Gate Valve:

1. ZECO technical engineers have fully considered the difficulty of after-sales service, so they developed the structure that can be maintained online, such as renewable valve seat, online replaceable packing, online replaceable hand wheel, etc., so as to facilitate the maintenance of after-sales personnel;
2. The wedge of ZECO 12 inch gate valve is ground to a mirror surface before assembly to ensure that it fits tightly with the seat ring and does not get stuck;
3. The valve stem sealing of ZECO 12 inch gate valve is realized by the collaboration of flexible and woven graphite, ensuring a more reliable tightness;
4. ZECO 12 inch gate valve has a good sealing performance at high temperature, and a wedge valve is not easy to jam after heating. Suitable for steam, high-temperature oil, oil, gas, and other media, as well as frequent switching components.Not suitable for easily coking media.

ZECO Valve Group, founded in 1991 located in Shanghai, Yancheng, Wenzhou with focus on manufacturing international standard valve. Contact us to know more about 12 gate valve price!

6 inch water valve is commonly used with flanged gate valves and various upper valves for water, including dirt separator.
Features of ZECO collector:
1. The release rate of primary gas of water through the exhaust valve assembly is 80%;
2. When the system runs for 4-6 hours, the gas content in the system can be reduced to less than half of the original level;
3. After a period of operation, the gas content in the system can be reduced to 0.4%;
4. Can separate the fouling at the same time during the exhaust;
5. After 50 cycles (flow rate of 0.5m/s), the dirt content decreased to less than 4%;
6. Suitable for systems with frozen liquid content up to 50%;
7. The minimum removal of air bubbles is 10 μm, while the minimum removal of impurity particles is 55μm.
8. The product complies with PED/DEP 97/23/EC(CE) standards;
9. The pressure loss is small and does not affect the flow rate.
6 inch Gate and butterfly valves are normally used in this dirt separator installation to ensure that water flow is blocked during maintenance to meet normal maintenance requirements. The dirt separator is applicable to heating, domestic hot water, geothermal utilization, central heating of thermal power plant, regional heating of boiler, ice storage air conditioning system ice storage and refrigeration and heat exchange & applicable to power industry, petrochemical industry, iron and steel metallurgy, paper, textile industry, food production, aerospace industry, shipping industry, automobile industry and civil heating (refrigeration) and other industries;It is used to protect equipment in the system that has low pressure or is sensitive to dirt because the heating device produces gas easily.

ZECO is one of the most professional control valve manufacturers china , and we have been devoted to produce control valve china for many years. If you want to know more details or want a quotation, just feel free to contact us!

Description of 3 Inch Gate Valve:

ZECO 3 inch gate valve is mainly used for fully open or fully closed switching valves. They are usually not used for throttling purposes, but for slurries, viscous fluids, etc. Gate valves feature a removable wedge that moves with the stem nut. The wedge moves perpendicular to the direction of flow. Gate valves usually have a minimum pressure drop when fully open, provide tight shut-off when fully closed, and remain relatively free of contamination buildup.

Features of 3 Inch Gate Valve:

1. The wedge of ZECO 3 inch stainless steel gate valve are fully guided to the seats. For this purpose, ZECO 3inch gate valve is equipped with integral cast gate, which is wedged at a certain angle to the vertical center line, and its function is to close more and more tightly during the closing process. The gate is cast as a whole, machined and automatically surfacing, and has a ring groove on the surface for a better fit on the seat surface;

2. ZECO won't because of urgent orders, and ignore the production technological process, ZECO each production line workers, any steps based on by technology department common processes for production and technology department, at the same time, the engineer of the quality department is on the basis of international standards for production of every step for testing to ensure that products are qualified;

3. The seat ring of ZECO 3 inch gate valve is forged and designed to reduce wear during switching and to prevent wear of the valve body and seal rings during flow;

4. After welding and required heat treatment, the seat ring of ZECO 3 inch gate valve shall be thoroughly cleaned by CNC machine and inspected by inspectors before assembly is allowed.

The 30 inch is mainly used for a small number of performance valves to regulate flow, for filtering, and for butterfly and gate valves to be used as switches. ZECO 30 inch flanged double offset butterfly valve chamber is further improved on the basis of single eccentric butterfly valves. It is characterized by the deviation of the stem axis from the center of the disc as well as the center of the body. The double eccentricity effect makes the disc rapidly disengage from the seat after the valve is opened, greatly eliminating unnecessary over-extrusion and scraping of disc and seat, reducing the opening resistance, reducing wear and improving the seat life. The sharp reduction of scraping also enables the double eccentric butterfly valve to use the metal seat, which improves the application of butterfly valve in the field of high temperature.

But because its sealing principle position belongs to the sealing structure, namely the butterfly plate and valve seat sealing surface of line contact, through the butterfly plate extrusion seat sealing effect caused by the elastic deformation, therefore, to the closed position requirement is very high (especially metal seated), low bearing capacity, which is why people traditionally butterfly valve leakage in high pressure resistance, no major reason. The main features of this valve are reasonable housing design, compact structure, easy to assemble and disassemble, easy to maintain.isThe valve adopts eccentric structure to reduce friction of sealing ring and prolong service life of valve.30-inchThe valve plate adopts the "T" structure, and the sealing surface is linear. Fully sealed, with zero leakage.The name change valve plate sealing ring, " O" ring, butterfly plate, rotating shaft and other materials can be applied to a variety of media and different temperatures.

ZECO is one of the most professional china check valve manufacturers , and we have been devoted to produce control valve china for many years. If you want to know more details or want a quotation, just feel free to contact us!

Description of 4 Inch Butterfly Valve:

ZECO 4 inch butterfly valve is made of body, disc, stem, seat, stuffing box, gear etc. ZECO butterfly valve is the most commonly used size on small pipelines, so there is a problem of stocking. Problems when stocking is almost the same with preparation of delivery. Time is the key factor, usually gate valve stocking period is decided by its sealing material. If the valve has to be stocked for several weeks or months, better stocking conditions are needed. Valve is usually stocked indoor and its stocking ambient temperature shall be higher than dew point. If valves are stocked outdoor, support the valve to make sure it does not contact the earth, at the same time, water-proof cover shall be added to the valve.

Features of 4 Inch Butterfly Valve:

1. ZECO 4 flanged butterfly valve are easily maintained. At any time pay attention to the sealing surface and shaft seal, When the sealing surface has abrasion or leakage, Generally, use the pressed seal of the screw plate to resolve, when the leakage occurred in the larger, the inner ring can be adjusted plus-one-chip be resolved, if there is damage to seals, plate seals can be removed, the replacement of seals, when the seal leakage, adjust packing gland or seal ring replacement;

2. The Double offset design of ZECO 4 inch butterfly valve is less abrasion, excellent sealing capacity;

3. The limit switch device of ZECO 4 inch butterfly valve ensure right position of open / close;

4. The body, disc and stem of ZECO 4 inch butterfly valve have sufficient strength and flexibility, sealing can be changed inside the valve.

Dynamic balancing valve is divided into two kinds: flow (flow dynamic control valve) and pressure difference (self-operated pressure difference control valve), which are selected according to actual demand. Dynamic balancing valve is used to solve the branch differential pressure balance problem caused by the frequent operation of temperature control valves at each end. The difference between static and static is that the static balance valve (also known as digital lock balance valve) needs to be locked after one-time debugging by a special intelligent instrument to control the total water volume of the system within a reasonable range, but every change needs to be re-locked by the instrument. The dynamic self-reliance is not so troublesome, depending on the pipe. The pressure change of the adjusted medium in the network can automatically keep a constant flow rate, which is a little cheaper in the static engineering cost.
Principle of dynamic balancing valve: By changing the flow area of the spool of the balancing valve to adapt to the changes before and after the valve, so as to achieve the purpose of flow control.
Dynamic balancing valve can be installed on a water supply pipe or the return pipe. When the working pressure of the system fluid exceeds the allowable working pressure of the radiator, the dynamic balancing valve should be installed on the water supply pipe for safety.
Static balancing valves, also known as balancing valves, manual balancing valves, digital lock balancing valves, double-position regulating valves, are used to solve the problem of branch pressure differential balance in pipeline design.
The working principle of the static balance valve is to change the flow resistance through the valve by changing the clearance (opening) between the valve core and the seat in order to achieve the purpose of regulating the flow. Its object of the action is the resistance of the system, which can distribute the new water according to the proportion calculated by the design. Each branch increases or decreases in proportion at the same time, and still satisfies the requirements. The flow demand of partial load under pre-climate needs plays a role of heat balance.

Static balancing valve can be installed on a water supply pipe or the return pipe. Generally, it should be installed on the return pipe. Especially for high-temperature loop, in order to facilitate debugging, it should be installed on the return pipe. The supply (return) pipe with a balance valve does not need to install the stop valve.
Whether static balancing valve or dynamic balancing valve, they are impedance components, especially dynamic balancing valve, which requires the system to consider the additional head caused by the balancing valve when selecting and distributing pumps.

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