AY42H and YA802Y safety relief valvesDetailed product description：

AY42H and YA802Y safety valves can be used on the pipelines of high-pressure water injection pump stations as overpressure protection devices.

AY42H safety overflow valve external dimensions and connection dimensions:

Model	Nominal Diameter	Size
		D	D1	K	M	Z-?d	b	L	L1	Rc	≈H
AY42H-160 AY42H-250 AY42H-400	fifteen	one hundred and thirty-five	ninety-five	twenty-five	M48×2	4-22	twenty-five	sixty-five	one hundred and forty	1/2"	three hundred and twenty-nine
	twenty-five	one hundred and sixty-five	one hundred and fifteen	thirty	M52×2	6-26	twenty-eight	eighty	one hundred and fifty	1"	four hundred and forty-seven
	twenty-five	two hundred	one hundred and forty-five	thirty-eight	M80×3	6-29	forty	ninety	one hundred and eighty	1 1 /2"	four hundred and eighty-five
	thirty-two	two hundred and twenty-five	one hundred and seventy	forty-two	M100×3	6-33	fifty	one hundred	two hundred	2 1 /2"	five hundred and seventy

YA802Y safety overflow valve external dimensions and connection dimensions:

Model	Nominal Diameter	Size
		Rc	ZG	L	L1	≈H
YA802Y-600	fifteen	1/2"	1/2"	fifty-two	ninety	two hundred and fifty
	twenty-five	1"	1"	fifty-two	one hundred and thirteen	two hundred and seventy-five
	forty	1 1 /2"	1 1 /2"	fifty-two	one hundred and fifty-seven	three hundred and thirty-six

AY42H/YA802Y safety relief valve main component materials:

NO.	Part Name	Material
one	valve body	carbon steel
two	valve seat	stainless steel
three	valve disc	stainless steel
four	valve cover	welded assembly
five	spring	50CrVA

Main performance specifications for YA802Y/AY42H safety relief valve:

Model	Nominal Pressure	Activate pressure grading	Working temperature (℃)	Applicable Medium
AY42H-160 YA802Y-160	sixteen	6.3～16.0	two hundred	Water, oil, etc
AY42H-250 YA802Y-250	twenty-five	10.0～25.0
AY42H-400 YA802Y-400 YA802Y-600	40.0-60.0	20.0～60.0