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Home > Products > Other > Pressure relief valveA742X (500X) PN10~PN25 pressure relief/holding valve

Description Material Performance Product Size Specifications

[product use]
The 500X (A742X) PN10~PN25 pressure relief holding valve can release the pressure in the pipe above the safety value of the guide valve and maintain the pressure in the pipe below the safety value to prevent the pipeline or equipment from being damaged by high pressure or SURGE in the pipe. It can be used to relieve the pressure of fire test circulation system in high-rise buildings to prevent the system from being endangered by excessive water pressure. Pressure holding valve: can maintain the upstream water supply pressure of the main valve above a certain set value to protect the pressure of the upstream water supply area of the main valve.
Scope of use: the product can be used to adjust the process parameters such as medium flow, pressure, temperature and liquid level in the field of industrial automation process control.
The product conforms to the standard: JB/T 10674.

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Main performance parameters

model	Nominal pressure PN	Applicable temperature /°C	Applicable medium
A742X（500X）-10/16	10、16	80	Water and a medium with physical and chemical properties similar to water
A742X（500X）-10Q~25Q	16~25	80	Water and a medium with physical and chemical properties similar to water

Main overall dimensions

（unit：mm）

model	size	Nominal size
model	size	40	50	65	80	100	125	150	200	250
A742X-10 A742X-10Q	L	235	240	250	285	360	400	455	585	650
	D	150	165	185	200	220	250	285	340	395
	H	516	516	520	538	596	655	710	805	855
A742X-16 A742X-16Q	L	235	240	250	285	360	400	455	585	650
	D	150	165	185	200	220	250	285	340	405
	H	516	516	520	538	596	655	710	805	855
A742X-25	L	235	240	250	285	360	400	455	585	650
	D	150	165	185	200	235	270	300	365	425
	H	516	516	520	538	596	655	710	805	855

model	size	Nominal size
model	size	300	350	400	450	500	600	700	800
A742X-10 A742X-10Q	L	800	860	960	1075	1075	1230	1650	1750
	D	445	505	565	615	670	780	895	1015
	H	955	990	1030	905	960	1020	1160	1515
A742X-16 A742X-16Q	L	800	860	960	1075	1075	1230	1650	1750
	D	460	520	580	640	715	840	910	1025
	H	955	990	1030	905	960	1020	1160	1515
A742X-25	L	800	860	960	1075	1075	1230	1650	1750
	D	485	555	620	670	730	845	960	1085
	H	944	990	1030	905	960	1020	1160	1515

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