Low-temperature Safety Valve, A351 CF8, DN25, PN16, 1 Inch

Jul 18, 2025

Product Name: Cryogenic Safety Valve, Stainless Steel
Body Material: ASTM A351 CF8
Size: DN25, 1 Inch
Pressure: PN16, Class 150 LB
End Connection: Threaded
Medium: Steam, Air
Temperature Range: -196°C to 180°C

The DA21F Safety Valve is designed as an overpressure protection device for cryogenic medium systems. It operates within a working temperature range of -196°C to +80°C and is suitable for liquefied natural gases, industrial gases (such as oxygen, nitrogen, argon, and carbon dioxide), and other related industries.

Technical Specifications

» Product Model: DA21F
» Normal Size Range: 3/8-1Inch (DN10-DN25)
» Normal Pressure Rating: PN10-PN40
» Materials: ASTM A351 CF8, CF8M, CF3, CF3M
» Ends Connections: BSP Thread, NPT Thread

Structural Diagram

Main Parts and Materials

No	Name of Parts	Stainless steel	Stainless steel
1	Body	AA351 CF8	A351 CF8M
2	Disc	SS 304+PCTFE	SS 316+PCTFE
3	Spring washer	SS 304	SS 316
4	Spring	12Cr18Ni9	12Cr18Ni9
5	Cap	SS 304	SS 316
6	Locking nut	SS 304	SS 316