DA-25 Stainless Steel Micro Opening Cryogenic Safety Relief Valve

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Safety valves are mainly used in cryogenic equipment, pipelines, tanks and are the ultimate protection device for pressure vessels. It has the characteristics of sensitive opening and reliable sealing. Before installation, make sure that the pipeline is clean.

Type:	DA-25
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Model:
DA-25
Brand:
Feilun

Product Description

Cryogenic Safety Valve

Nominal Pressure：4.0MPa

Design Temperature：-196℃~+80℃

Suitable Media：LNG、LO₂、LN₂、LAr、CO₂

Coeffcient of discharge：0.29

Body：CF8

Spring：S30210

Main Sealing：PCTFE+MoS2

(Micro-opening Type)

da-25

Master parameter list

Type	Major Overall & Connection Dimensions(mm)							Setting Pressure(MPa)
	H	H1	M1	M2	L	D	DO
DA-25	140	82	M36*2	M33*2	40.5	∅53	∅20	0.4~0.94
DA-25A1								0.95~2.1
DA-25A2								2.11~2.59
DA-25A3								2.5~3.6
DA-25A4								0.2~0.39

Micro-open safety valve refers to a type of safety valve with relatively small disc opening height and discharge amount. Specifically, the specified opening height of the valve disc h is between D1/40 and D2/20 (D1 is the diameter of the valve seat throat).

Full-opening safety valve refers to a safety valve with an opening height greater than or equal to 1/4 of the diameter of the flow channel. The operating characteristics of this safety valve belong to the two-stage acting safety valve