Cryogenic Globe Valves: Overview, Structural Features & Product Parameters

Cryogenic Globe Valves are suitable for cryogenic working conditions of -196℃. The valve stem axis of the Cryogenic Globe Valve is perpendicular to the sealing surface of the valve seat. The opening or closing stroke of the valve stem is relatively short, with a very reliable cutting action, making it suitable for cutting off, regulating and throttling media.

Structural Features

• Globe valves have various connection and material combinations.

• Valves can be equipped with additional functions, such as bellows seals for improving tightness requirements or check functions.

• All valve parts used at temperatures below -100℃ shall undergo deep cold treatment in accordance with relevant regulations to prevent low-temperature brittleness of materials and volume changes caused by material phase transformation at low temperatures.

• A long-neck structure is adopted to keep the working temperature of the packing above 0℃, effectively preventing the packing from reducing sealing performance or even failing due to excessively low working temperature. At the same time, it is convenient to wrap thermal insulation materials around the valve to prevent cold energy loss. When the operating temperature is lower than -100℃, the valve stem material is chrome-plated or nitrided to improve the surface hardness of the valve stem and the reliability of the packing.

• Gaskets have reliable sealing performance and resilience at room temperature, low temperature and during temperature changes.

• Adopts double-layer valve stem packing and counter-pressure butterfly shrapnel device.

Product Parameters

• Size Range: NPS1/2-20 (DN15-500);

• Pressure Class: ASME CLASS 150-1500;

• Design Standards: API 602, BS 1873, GB/T 24925, JB/T 7749, MSS SP-134, etc.;

• Body Material: Cryogenic alloy steel, austenitic stainless steel, etc.;

• Connection Methods: Flanged end, butt weld end, etc.;

• Operation Methods: Manual, electric, etc.;