CNG LNG Cryogenic piston lifting check valve free forged

SAMPLE SPECIFICATIONS
SIZE: DN20
RATING: PN420
END: BW AS PER B16.25
TEMPERATURE: -196 ℃
BODY AND BONNET : ASTM A182 F304
PLUG: ASTM A182 F304+HF
SEAT: PCTFE OR HF METAL
ACTUATION: SPRING LOADED

GENERAL

Size: 1/8″~24″.
Pressure Rating: 150LB~4500LB, PN6~PN750
Design Temperature: -196℃~800℃.
General applications: CNG, LNG,LPG, CO2, N2, other cryogenic duty.STEAM thermal duty.

DESIGN

Design & Manufacture: BS 6364, API 6D , ASME B16.34 are basic,other norms could be used according to orders.
F TO F dimensions: API 6D, ASME B16.10, BS EN 558
Connection: ASME B16.25, ASME B16.5, ASME B16.47, EN 1092, JIS 5K-20K. BW, RTJ are available.
Safety design: fire proof

GENERAL MATERIAL

BODY: ASTM A182 F304/F316/F304L/F316L/F51/F53, MONEL K400/K500, H276,INCONEL 625/718
PLUG: ASTM A182 F304, F316
SEAT: PCTFE, PEEK, HF METAL
OPERATOR: SPRING LOADED
OTHER SPECIAL MATERIALS ARE AVAILABLE TO CUSTOMIZE.

TEST

Inspection and approval norm: API598, API6D, BS6364.

QUALITY CONTROL:

100% Chemical analysis and mechanical test with raw materials of each heat numbers.
100% DPT test with the castings, partly MT or UT test, RT is always available if required.
100% hydraulic test with the shell and seal and low pressure air test.

GUATANTEE:

SAVVY VALVES provide 12 months service life at least, free spares and maintenance instruction will be provided when required.

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How Does A CNG LNG Cryogenic Piston Lifting Check Valve Free Forged Perform In Low-Temperature Gas Systems?

The CNG LNG cryogenic piston lifting check valve free forged is engineered to ensure backflow prevention in ultra-low temperature environments commonly found in liquefied gas systems such as CNG and LNG applications. Its piston-type lifting mechanism provides precise, responsive flow control and seals tightly upon flow reversal, which is critical for protecting downstream equipment in cryogenic conditions. The free forged body enhances the valve’s structural strength, pressure resistance, and resistance to thermal shock, which is vital for maintaining performance at temperatures as low as -196°C. Designed with an extended bonnet, it isolates the stem and packing from direct contact with cryogenic fluids, minimizing leakage risks. This valve is widely used in LNG terminals, gas liquefaction plants, and cryogenic storage tanks where safety, durability, and zero leakage are non-negotiable. Its compact size, low cracking pressure, and robust sealing performance make it ideal for high-integrity gas systems under extreme conditions.

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