DN25 Hard Seat Cryogenic Valve – Built for -196°C Gas Storage Protection

Type	Major Overall & Connection Dimensions(mm)						Nominal operating pressure(MPa)	Setting Pressure(MPa)
	H	H1	M1	M2	L	DO
DAH-25B	193	69.5	G1 1/4	M36*2	47	∅20	4.0	0.4~1.0
DAH-25B1								1.0~2.0
DAH-25B2								2.0~3.5

Nominal Pressure：4.0MPa

Design Temperature：-196℃~+80℃

Suitable Media：LNG、LO₂、LN₂、LAr、CO₂

Body：CF8

Spring：S30210

Main Sealing：Carbide

DN25 Hard Seal Cryogenic Safety Relief Valve – Engineered for Precision in Cold

This DN25 cryogenic safety relief valve features a hard metal seat design, providing superior sealing, long service life, and resistance to wear under ultra-low temperature conditions. Designed for LNG, LN₂, LOX, and other cryogenic gas systems, the valve protects tanks, pipelines, and vaporizers from dangerous overpressure events.

Made from high-grade stainless steel, the DN25 valve operates reliably at temperatures as low as -196°C. Its spring-loaded structure delivers quick response and consistent pressure relief.

Key applications include cryogenic storage tanks, gas filling stations, LNG transport systems, and air separation units.

Features:

• DN25 port size (1”)

• Hard seal (metal seat) structure for leak-free operation

• Set pressure range: 0.2 – 2.5 MPa (adjustable)

• CE & ISO certified

• OEM logo and custom pressure settings available

• Available with threaded or flanged connections

This valve is ideal for industries that demand precision, durability, and cryogenic-grade safety.