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Johnson Zhao
  • Male
  • shanghai
  • China, mainland

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Johnson Zhao posted blog posts
Aug 16
Johnson Zhao posted a blog post

Dynamic Flow Balancing Valve

Function: The dynamic flow balance valve keeps the flow constant between 31-600KPa.Role: Keep the flow through the valve constant.Theory: When the incoming flow pressure P1 increases, the sleeve of the valve sleeve moves downward, compressing the spring inside the valve bladder, and reducing the flow area of the valve hole at the bottom of the valve bladder, that is, reducing the Kv value of the valve bladder. Thus, although the pressure difference ΔP across the damper is increased, the Kv…See More
Aug 14
Johnson Zhao posted blog posts
Aug 13
Johnson Zhao posted a blog post

Triple Offset Butterfly Valve

To withstand high temperature, the metal seal must be used, but large leakage; For zero leakage, rubber seal must be used, but not high-temperature resistant. In order to overcome the contradiction of the double eccentric butterfly valve china, the triple offset butterfly valve was carried out.The structural characteristics of the double eccentric eccentric axis of the stem position at the same time, make the…See More
Aug 11
Johnson Zhao posted blog posts
Aug 10
Johnson Zhao posted a blog post

Resilient Gate Valve for Underground

Basic informationThis valve is used as a two-way closed circuit device.Features1. No need for sluice Wells, which reduces the amount of installation work;2. Does not affect the traffic, and underground parts of the integration, effectively prevent theft;3. Stem has a special extendable structure, which can effectively prevent the ground from sinking;4. Long life, no internal leakage.PrincipleThis underground…See More
Aug 8
Johnson Zhao is now a member of The HEY PAPI PROMOTIONS Network !
Aug 8

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"Sales Manager, ZhengFeng Valve Group
Self-Introduction: Like Making Friends, Responsible
Hobby: Travel, Tennis, Swimming
Motto: If Everything is Ready, What is Your Value"

Johnson Zhao's Blog

Hydraulic Balancing Valve

Posted on September 20, 2019 at 4:30am 0 Comments

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…


Dynamic Flow Balancing Valves

Posted on September 19, 2019 at 4:30am 0 Comments

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…


Balancing valve working principle

Posted on September 18, 2019 at 4:30am 0 Comments

The differential pressure control valve working principle Balance valve is a dynamic and static balancing valve under hydraulic conditions. Such as static balance valve, dynamic balance valve.

Valve body material: cast iron, cast steel,

Work pressure is 0.6-4.0 MPA.

The working temperature is - 5 C - 350 C.

Valve caliber DN15-DN300,

Connection mode: flange,…


Quality Control

Posted on September 17, 2019 at 4:51am 0 Comments

As we all know, quality is the life of an enterprise. ZECO and every employee of ZECO attach great importance to quality requirements because of its corporate culture. We have developed an excellent quality process flow, which can guarantee excellent qualified rate from the material analysis, physical performance test, aging treatment before processing, dimension test after processing, the thickness after spraying treatment, adhesion test after assembly, performance test and the final…


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