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Low temperature cryogenic treatment flange butterfly valve - triple eccentric/hard seal

Low temperature cryogenic treatment flange butterfly valve - triple eccentric/hard seal

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Product parameters

Low temperature cryogenic treatment for flange butterfly valves or special materials Low temperature cryogenic treatment flange butterfly valve refers to a butterfly valve that can be used under low temperature conditions. The working temperature is -40C. Mainly used for equipment such as ethylene and liquefied natural gas.

The liquid low-temperature medium used by , such as ethylene, liquid oxygen, liquid hydrogen, etc., is flammable and explosive, vaporizes at high temperatures, and expands hundreds of times in volume.

This product belongs to our butterfly valve range. For sizing, pressure rating, material and actuator selection, see our valve technical resources.

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Butterfly Valve FAQs

01 Which butterfly valve seat design should be used?
Common designs include resilient seats and metal seats. Resilient-seated valves are generally used for water, air and low-leakage services at moderate temperatures. Metal-seated valves are selected for higher temperature, pressure or erosive industrial media. The final choice depends on the medium, temperature, pressure and required leakage class.
02 How do wafer, flanged and lug butterfly valves differ?
Wafer valves are compact and require little installation space. Flanged valves provide a stable pipeline connection for larger sizes or higher pipe loads. Lug valves can facilitate one-sided removal and maintenance. Selection depends on the piping standard, space, size and maintenance method.
03 Should a butterfly valve use pneumatic, electric or manual actuation?
Manual or gearbox operation suits local isolation. Pneumatic actuators provide fast response for frequent operation and hazardous areas. Electric actuators support remote control and modulation. The actuator must be sized for valve size, differential pressure, torque and control signal.
04 Which operating data are required for butterfly valve selection?
Provide the medium, design temperature, design pressure, nominal size, connection standard, body and seat materials, leakage class, flow direction, operating frequency, actuation method and any enclosure or explosion-protection requirements.