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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!

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.

Description of 4 Inch Gate Valve:

ZECO 4 inch gate valve is one of the most commonly used calibers. Gate valve in the line just switch effect, looks small, really small gate to pipeline protection as very important, although the gate valve switch is a long time, but the gate valve torque needed to light, in the case of an emergency, if only one person online, if go to close a 4 inch ball valve, may take the human is very big, if the manufacturing process is a little omission cause excessive torque, also likely won't open, but the gate by hand wheel operation, turn the handwheel to drive the stem promoted, this itself is a process of from, open is very light.

Features of 4 Inch Gate Valve:

1. The stem of ZECO 4 inch gate valve adopts T-head which is integral, This is much stronger than threaded or welded stem and is less prone to high pressure bending;

2. The stuffing box of ZECO 4 inch flanged gate valve is deep enough to ensure sufficient packing to keep the stem sealed for a long time. Standard installed stuffing box design requirements meet < 100ppm unorganized emissions requirements, ZECO environmental protection has been ISO 14001 certification, to a sense of social responsibility of the enterprise obligations;

3. The handwheel design of ZECO 4 inch gate valve makes valve be easy to operate, in the manual operation process to use the power up.Turbine drives, electric and pneumatic devices are also available;

4. ZECO 4 inch gate valve has been sent to all parts of the world, and have been well received by users of oil companies and natural gas companies. ZECO has won the recognition of users around the world and long-term cooperation opportunities with its quality.

Description of 6 Inch Ball Valve:

ZECO Valve Group is a well-known ball valve manufacturer in China. Since its establishment in 1991, it has been producing ball valves for nearly 30 years. In the production process, ZECO regards each valve as a handicraft to keep improving. With the support of high-tech production equipment and high-tech personnel, each product can achieve international quality. ZECO has been a high-tech enterprise in China for many years. Every year, ZECO devotes itself to the research and development of valves with more efficient performance and longer service life. The research and development cost of ZECO accounts for nearly 8% of the company's sales cost.

Features of 6 Inch Ball Valve:

1. ZECO 6 inch valve is designed with an auxiliary seat emergency seal system.Once the soft seal seat is damaged, emergency sealing can be performed by injecting the appropriate sealant into the auxiliary seal system.Emergency seals can also be used to flush and lubricate seat areas as necessary to keep seat areas clean without affecting sealing.The stem also has an emergency seal design for emergency sealant filling and flushing lubrication;

2. ZECO 6 inch valve with fire protection construction.The fire protection structure of the 6 inch ball valve is designed in accordance with API 607. In the event of a fire, the metal seat will be immediately in contact with the ball after the soft seal seat burned, to prevent the valve leakage caused by greater impact;

3. ZECO 6 inch valve body wall thickness will have a certain amount of design, carbon steel body, seat, bottom cover are in accordance with ASTM B733 surface chemical coating. In addition, if the user needs special customization, ZECO also has a variety of anti-corrosion materials for selection to meet the working conditions;

4. ZECO 6 inch valve in order to prevent the maintenance of the valve stem because of the excessive pressure in the cavity and the phenomenon of flying out, there is a design to prevent flying out of the stem.

Description of 6 Inch Gate Valve:

All casting and forged parts of ZECO 6 inch gate valve, especially the body and cover two of the main pressure components, are used to strengthen the intensity of the heavy sections, although ZECO body, cover thickness is up to standard, but the heavy sections of the design can make the product more guaranteed, allowance in corrosive medium to ensure long service life of the product.ZECO pays great attention to the purchase and inspection of raw materials, because ZECO knows very well that if raw materials are not strictly controlled, no matter how good the processing technology and detection means are in the later stage, they cannot turn unqualified products from the source into excellent products. Therefore, ZECO slowly moves valve products towards the route of handicraft products step by step.

Features of 6 Inch Gate Valve:

1. ZECO 6 inch gate valve has very reliable maintenance performance. The replaceable valve seat design ensures that later seat damage can be replaced on site. The inverted seal design ensures online replacement when packing is replaced;

2. When ZECO 6 inch flanged gate valve is transported, stainless steel valve and carbon steel valve will be separately packaged, because at room temperature, when carbon steel valve and stainless steel valve contact, will not immediately carburizing phenomenon, stainless steel valve has spots of corrosion is a certain period will appear.In the humid environment, if the carbon valve and stainless steel valve stacked together is easy to produce chemical reactions, thus damaging the protective layer of stainless steel valve, resulting in stainless steel valve rust;

3. After nearly 30 years of gate valve design, ZECO 6 inch gate valve products have stable performance and light switching torque;

4. ZECO 6 inch gate valve is all its own precision casting molds, and the casting sand is fine sand, beautiful appearance and clear casting characters.

Description of 3 Inch Butterfly Valve:

ZECO 3 inch butterfly valve is a small diameter butterfly valve, usually manually operated, and the connection is usually lug type or wafer type, because the advantage of small diameter butterfly valve is that it is simple in accordance with the way, compared with other valve flange connection operation is fast and simple. ZECO as a professional on the wafer and lug type butterfly valve manufacturer, is strict to the material and appearance of the casting, casting usually arrive ZECO factory, will be isolated in the corresponding area waiting for QC inspector inspection, inspector will, in turn, the chemical composition, physical properties of the casting and design is individually and will follow the ERP system into the data of the product review file for later use. ZECO also pays great attention to every detail in the production process, and each process will be tested and recorded by corresponding inspectors in the ERP system.

Features of 3 Inch Butterfly Valve:

1. ZECO 3 inch butterfly valve can use metal seal structure and resilient seal structure, connection mode can also choose lug type, wafer type and flange connection, the choice of diversity, users can choose according to the actual working conditions to meet the requirements of working conditions;

2. ZECO 3 inch butterfly valve has low torque. Although it is small in size, ZECO engineers make every effort to design the product so that users can feel ZECO's improvement in design, rather than rush through it;

3. The stem of ZECO 3 inch butterfly valve is designed with anti blow-out structure, which can ensure the maintenance personnel to avoid personal safety damage caused by the pressure of the middle chamber pushing out the stem when replacing the packing;

4. The seat and sealing ring of ZECO butterfly valve can be replaced, which ensures the quick and convenient maintenance of maintenance personnel on site.

Description of 6 Inch Butterfly Valve:

ZECO provides detailed installation instructions to ensure high performance and long service life of the 6 inch butterfly valve. The capacity if piping flanges and valve depends the deformation of gaskets. Acting force of bolting is not only resists force to loosen the connection, but also to keep necessary compressing stress. Taking note of the force does not exceed the gasket load and pressure load. In order to ensure good connection, following instructions shall be noted.

(a) Check flange surface, if any defect appears leakage, groove or impress, repair before installation;

(b) The installation requests of Cast iron flange are more than the ductile cast iron. Proposed to use low-strength steel Bolted to reduce as a result of excessive pre-compression flange of the possibility of exceeding the prescribed stress. To fit flat flange gasket in the flat flange to prevent excessive torque of bolt flange damage. Should not be confused with convex planar flange of the loaded flange In the cast iron flange connection is particularly important that the top is installed on the better to ensure that in the absence of excessive load bolted gasket circumstances make an appropriate compaction force;

(c) Gasket have the capacity of resisting deformation and damage;

(d) Check the centration of assemble-part flanges, Lubricate the threads of boltings. Boltings shall be fasten sequential to make sure level contact between flange and gasket.

Features of 6 Inch Butterfly Valve:

1. One of the advantage of ZECO 6 inch butterfly valve is fast closure;

2. One of the advantage of ZECO 6 inch butterfly valve is disc sealing material is high grade rubber or Teflon, which successfully resist aging and abrasion;

3. One of the advantage of ZECO 6 inch butterfly valve is the bracket connected with the drive device conforms to ISO5211 standard;

4. One of the advantage of ZECO 6 inch butterfly valve is the stem is designed to meet API 609 requirements with a blowout resistant design.