Shijiazhuang High & Middle Pressure Valves Manufacturer
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Built-in relief valve NA42F - 25

Product Features

Features: apply to liquefied petroleum gas, liquid ammonia tank lorry, such as when the medium inside the tank pressure rises to the setting value, the valve automatically opens, the total amount of emissions, when the medium pressure down to a specified value, the valve automatically shut down, to protect the safe operation of the equipment.

Technical parameters

Technical parameters:

 

Nominal pressure MPa 2.5
Shell test pressure MPa 3.75
MPa opening pressure level 1.0, 1.8, 2.2
Applicable medium Liquefied petroleum gas, vinyl chloride, liquid ammonia, etc
Suitable temperature - 40ºC ~ + 80ºC

Main components:

 

The valve body stents The disc The valve stem The guide sleeve spring gasket
WCB WCB 20Cr13 20Cr13 ZG20Cr13 50CrVA PTFE

Built-in relief valve NA421F - 25 nominal pressure PN2.5 Mpa shape size and the connection size

 

DN D0 D D1 D2 D3 b f Z - phi d H H1
50 35 160 125 99 68 20 3 4 - phi 18 407 113
80 52 235 190 149 105 25 5 8-22 532 145

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