Cryogenic Gate Valve

Waits is a large valve integration supplier, cryogenic gate valve is one of our products. We have our own production base, and the global headquarters is located in Wenzhou, China. The production materials of the products are carefully selected and can provide competitive prices. They have been well used in Saudi Arabia, the United Arab Emirates, Kuwait, and the northern region, and can cope with complex working conditions.

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Product Description

The cryogenic gate valve usually works at a temperature below -40°C and is mainly used in ethylene, liquefied natural gas plants, natural gas LPG, LNG storage tanks, receiving bases and satellite stations, air separation equipment, petrochemical tail gas separation equipment, liquid oxygen, liquid hydrogen, liquid nitrogen, liquid argon, carbon dioxide cryogenic storage tanks and tank trucks, pressure swing adsorption oxygen production equipment, etc.

Implementation Standards

Design standards	API 600, API 602, BS 6364, ASME B16.34, MESC SPE 77/200, MSS SP-134
Flange standards	ASME B16.10, ASME B16.25, ASME B16.5
Connection methods	RF, RTJ, BW
Testing and acceptance	API 598/BS 6364, MESC SPE 77/200, MSS SP-134
Structural length	ASME B16.10,
Pressure and temperature ratings	ASME B16.34、
Fireproof test	API607, API6FA
Low leakage standards	ISO 15848-1, API 622
Anti-corrosion design	NACE MR 0103, NACE MR 0175

Application

Size	NPS 2″ ~ NPS 24″ DN50~ DN600
Pressure range	CL150~ CL1500 PN10~ PN250
Temperature range	；-196°C ~ +150
Application range	Mainly used in ethylene, liquefied natural gas equipment, natural gas LPG, LNG storage tanks, receiving bases and satellite stations, air separation equipment, petrochemical tail gas separation equipment, liquid oxygen, liquid hydrogen, liquid nitrogen, liquid argon
Drive mode	Turbine, pneumatic, electric
Valve body/valve cover	A182 F304/F304L/F316/F316L/CF3/CF3M/LF2/LCB/LF3/LCC
Valve plate/valve seat	F316/F304+HF
Valve stem	F6A F304 F316 F51 F53 Monel K500
Valve stem nut	Copper Alloy
Packing	Flexible graphite, graphite asbestos packing, polytetrafluoroethylene...

Performance Features

1. All cryogenic gate valve parts in contact with the medium are strictly cryogenically treated according to the requirements of the specification before finishing to ensure that the parts can fully withstand the expansion and contraction caused by temperature changes, and the structure of the valve seat will not be permanently deformed due to temperature changes;
2. A long-necked valve cover structure that can protect the stuffing box is adopted;
3. The gate structure is not affected by temperature changes and can maintain stability and sealing. Specifically, elastic gates and open gates are adopted;
4. The upper sealing seat is a cobalt-chromium-tungsten carbide cladding structure to avoid the stainless steel materials from biting each other;
5. Valve seat and gate sealing surface structure: cobalt-chromium-tungsten carbide cladding;
6. The pressure relief hole structure can prevent abnormal pressure rise in the middle cavity. The location of the pressure relief hole depends on the valve structure. It can be set on the valve seat or on the gate plate, and connected to the valve inlet end;
7. The valve stem surface is nitrided and hardened to prevent surface scratches during the opening and closing of the valve from affecting the sealing performance;
8. Customized selection: The packing can be selected as low-leakage packing according to user requirements to ensure that the leakage at the valve packing meets environmental protection requirements. Welded sleeves can be provided according to user requirements. Insulation plates (drip plates) can be provided according to user requirements.

Cryogenic Gate Valve