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check valve

Knife gate valves
Knife gate valves
The knife gate valve relies on the perpendicular movement of the knife gate and the fluid direction to cut off the medium, so as to control the flow of the pipeline. Due to the small structural length of the knife gate valve, the flow resistance is small, and it is not easy to accumulate materials, especially suitable for the installation of large pipelines such as conventional powder and low-pressure liquid fluid, which rely on self-weight blanking or low-pressure transportation. The VATTEN®KGV series knife gate valve features a unique wedge-shaped ram design. The composite combination seat can better adapt to the sealing and switching requirements of different working conditions. At present, this series of knife gate valves has been widely used in many fields and industries.

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Cryogenic valves
Cryogenic valves
Cryogenic control valves are usually used to cut off or control industrial media with very low operating temperatures. In addition to liquid nitrogen and other liquid inert gases, most of the medium controlled by the cryogenic valve is not only flammable and explosive, but also gasifies when heating or flashing, resulting in a sharp expansion of the volume, which is easy to lead to leakage and explosion Based on the characteristics of the medium and the requirements of adapting to the use of the valve at low temperature, the design, manufacture, test and installation methods of the cryogenic valve are different from ordinary valves.

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Cryogenic ball valves
Cryogenic ball valves
Cryogenic control valves are usually used to cut off or control industrial media with very low operating temperatures. In addition to liquid nitrogen and other liquid inert gases, most of the medium controlled by the cryogenic valve is not only flammable and explosive, but also gasifies when heating or flashing, resulting in a sharp expansion of the volume, which is easy to lead to leakage and explosion Based on the characteristics of the medium and the requirements of adapting to the use of the valve at low temperature, the design, manufacture, test and installation methods of the cryogenic valve are different from ordinary valves.

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Diaphragm valve (fluorine-lined)
Diaphragm valve (fluorine-lined)

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Diaphragm valve (cast iron)
Diaphragm valve (cast iron)

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Self-operated control valves
Self-operated control valves
Self-operated control valve, also known as self-operated control valve, is a kind of control valve that relies on the pressure and temperature of the medium in the valve as energy to drive the valve to work automatically, and does not require external power supply and secondary instruments. The self-supporting control valve uses the feedback signal (pressure, differential pressure, temperature) at the output end of the valve to be transmitted to the actuator through the signal tube to drive the valve disc to change the opening of the valve, so as to achieve the purpose of adjusting the pressure, flow rate and temperature.

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HC44X rubber flap check valve
HC44X rubber flap check valve
HC41X silencing check valve is suitable for water supply and drainage pipelines, the valve disc is guided by the central shaft at both ends of the inlet, which can be opened and closed flexibly, and can be installed horizontally or vertically. The disc is spring-loaded, and its quick closing can effectively eliminate water hammer, with good sealing performance and noiseless closing. It has the advantages of small size, light weight, low fluid resistance, fatigue resistance and long life.

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H42H/W Vertical Check Valve
H42H/W Vertical Check Valve
H42 vertical check valve is designed and manufactured in strict accordance with API6D and GB/T12235 standards, this series of valves is normally closed, and the valve is opened due to the pressure of the inlet medium in the pipeline. When the medium pressure at the inlet end is lower than that at the outlet end, the spring pushes the valve core to the valve seat and closes the valve, preventing the medium from flowing backwards, so it plays a non-return role. Due to the spring-supported spool, the H42N vertical check valve can be installed vertically or horizontally. It is widely used in pipelines under various working conditions such as petroleum, chemical, pharmaceutical, and power industries.

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