Shijiazhuang High & Middle Pressure Valves Manufacturer
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Safety valve A21F-25

Product Features

Suitable for gas or liquid ammonia pipeline, when the pipeline within the medium pressure rises to the setting value, the valve automatically open, release the pressure, to protect the safe operation of the equipment.

Technical parameters

Technical parameters:

 

Nominal pressure Mpa 2.5 4.0
Shell test pressure Mpa 3.75 6.0
Seal test pressure Mpa 2.75 4.4
Setting pressure of Mpa The user to identify
Suitable temperature - 29ºC to + 80ºC
Applicable medium Liquefied petroleum gas, liquid ammonia, etc
Manufacturing standards GB/T12243-2005

The major parts material

 

The valve body The valve stem The disc The seat spring gasket
WCB 20Cr13 ZG20Cr13 ZG20Cr13 50CrVA PTFE

Pipeline valve A21F nominal pressure PN2.5 MPa shape size and the connection size

 

DN Rp D L H1 D0 D1 D2 H
15 1/2 30 35 75 12 15 20 70
20 Three quarters of 34 40 81 16 20 25 74
25 1 42 50 89 20 25 31 106

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