A21F Pipeline Safety Valve

Shijiazhuang High & Middle Pressure Valves Manufacturer

Product overview

Pressure-relief offering for gas and liquid-ammonia piping.

The A21F listing describes automatic opening when pipeline pressure reaches the chosen set point. Shijiazhuang High & Middle Pressure Valves lists gas and liquid-ammonia applications, a WCB body and PTFE sealing. The source identifies GB/T 12243-2005 as its manufacturing reference and treats set pressure as a user-specified value.

Safety Relief Valve category

Published specifications

Model heading: A21F-25
Pressure entries in source table: 2.5 and 4.0 MPa
Temperature entry: −29 to +80°C
Set pressure: Specified for the application
Manufacturing reference: GB/T 12243-2005

Selection points

Provide the required set pressure, fluid and relieving duty for sizing.
Confirm the exact model suffix and certified discharge data in the supplier selection.