AX742X Fire fighting water supply system safety relief valve

Model: AX742X

Item specifics

Nominal Pressure: 1.0/1.6/2.5MPa

Shell Test Pressure: 1.5/2.4/3.75MPa

Seal Test Pressure: 1.1/1.76/2.75MPa

Suitable Medium: Water

Medium Temperature: 0-80℃

Review

Description

Brief Introduction

AX742X Safety relief valve/ Pressure Holding valve is mainly used for the water supply system of fire control and others, to avoid overpressure, or holding fire control water supply system pressure. After fire control pump closing, it can also reduce water hammer damage. It can also been used for water hammer device of large water supply system. This valve is composed of main valve, needle adjust valve, pilot valve, ball valve and pipe system. Main valve adopts full bore, straight way and streamline design, low head loss. Main valve could be diaphragm type or piston type.

Parameters

Nominal Pressure	Shell Test Pressure	Seal Test Pressure	Adjust Range	Suitable Medium	Medium Temperature
1.0 MPa	1.5 MPa	1.1 MPa	0-1.0MPa	Water	0-80℃
1.6 MPa	2.4 MPa	1.76 MPa	0-1.6MPa
2.5 MPa	3.75 MPa	2.75 MPa	0-2.5MPa

Material

Part Name	Material
Valve Cap	Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.
Spring	Spring steel, Stainless steel, etc.
Diaphragm depressor	Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.
Diaphragm	NBR, PTFE, etc.
Valve Rod	45# steel, Stainless steel 2Cr13, 1Cr18Ni9Ti, etc.
Valve Platen	Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.
Sealing Ring	NBR, PTFE, etc.
Sealing Ring Platen	Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.
Valve Seat	Copper alloy, Stainless Steel
Valve Body	Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.