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  • The difference between parallel gate valve and wedge gate valve

    The difference between parallel gate valve and wedge gate valve

    What is a parallel gate valve: that is, the sealing surface is parallel to the vertical centerline, so the valve body and the sealing surface on the gate are also parallel to each other. The most common type of this kind of gate valve is the double gate type. In order to make the valve body and t...
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  • Structural features of ball check valve

    Structural features of ball check valve

    The ball check valve is also called the ball sewage check valve. The valve body is made of nodular cast iron. The paint surface of the valve body is made of non-toxic epoxy paint after high temperature baking. The paint surface is flat, smooth and bright in color. The rubber-covered metal rolling...
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  • Talk about “running and leaking” of valves

    Talk about “running and leaking” of valves

    One, the valve leakage, steam leakage prevention measures.   1. All valves must be subjected to hydraulic test of different grades after entering the factory.   2. It is necessary to disassemble and repair the valve must be ground.   3. During the overrepair, check whether the coiling is added an...
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  • Introduction of valve materials for seawater desalination

    Introduction of valve materials for seawater desalination

    In recent years, with the improvement of people’s living standards and industrial development, the consumption of fresh water has increased year by year. In order to solve the water problem, many large-scale desalination projects are under intense construction in the country. In the process...
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  • H71W stainless steel wafer lift check valve working principle and characteristics

    H71W stainless steel wafer lift check valve working principle and characteristics

    Stainless steel wafer lift check valve H71W/stainless steel one-way valve/wafer lift non-return valve adopts short structure size and single disc design. Compared with traditional swing check valve, this series of valves has no external Leakage, can be installed in any position, good sealing perf...
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  • The operating temperature of the valve

    The operating temperature of the valve

    The operating temperature of the valve is determined by the material of the valve. The temperature of commonly used materials for valves is as follows:   Valve operating temperature   Gray cast iron valve: -15~250℃   Malleable cast iron valve: -15~250℃   Ductile iron valve: -30~350℃   High nic...
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  • Diaphragm Valve

    Diaphragm Valve

    Diaphragm valve is a shut-off valve that uses a diaphragm as an opening and closing part to close the flow channel, cut off the fluid, and separate the inner cavity of the valve body from the inner cavity of the valve cover. The diaphragm is usually made of rubber, plastic and other elastic, corr...
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  • Installation of common valves

    Installation of common valves

    Installation of gate valves     Gate valve, also known as gate valve, is the use of gate to control the opening and closing of the valve, by changing the cross section to adjust the pipeline flow and opening and closing pipeline.  Gate valves are mainly used for the pipeline of full open or full ...
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  • Valve selection instructions

    Valve selection instructions

    1. Selection of gate valve   In general, gate valves should be preferred.  Gate valves are not only suitable for steam, oil and other media, but also for medium containing granular solids and large viscosity, and suitable for vent and low vacuum system valves.  For media...
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  • Wide range of uses of butterfly valves

    Wide range of uses of butterfly valves

    Butterfly valve is a kind of valve, which is installed on the pipeline to control the flow of medium in the pipeline. The butterfly valve is characterized by simple structure and light weight. Its components include transmission device, valve body, valve plate, valve ste...
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  • The characteristics and working principle of butterfly check valve

    The characteristics and working principle of butterfly check valve

    Butterfly check valve is also called butterfly check valve. HH77X butterfly check valve is an automatic valve that works according to the flow state of the medium in the pipeline. It can effectively prevent the pipeline medium from flowing back and prevent the pumps and ...
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  • What is the difference between butterfly valve handle drive and worm gear drive? How should I choose?

    What is the difference between butterfly valve handle drive and worm gear drive? How should I choose?

    Both the handle butterfly valve and the worm gear butterfly valve are valves that require manual operation. They are commonly referred to as manual butterfly valves, but there are still differences in the use of the two.     1. Handle butterfly valve The handle rod directly drives the valve plate...
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