Safety valve AHN42F series

Application

The AHN42F safety valve is used on the liquid phase return pipeline at the outlet of the filling pump in a liquefied petroleum gas station. When the pressure upstream of the pump exceeds the specified value, it serves as a safety return valve. The standard return pressure difference is 0.5 MPa, and the adjustable return pressure difference ranges from 0.3 to 0.8 MPa.

Product Introduction

Main component materials

Model	PN	Set Pressure (MPа)	Sealing Test Pressure (MPа)	Discharge Pressure (MPа)	Re-seating Pressure (MPа)	Applicable Temperature (°C)	Applicable Medium
AHN42F-10C	10	0.06-1.0	Ps<0.3时，Ps-0.03 Ps≥0.3A,90%Ps	≤1.1Ps	≥85%Ps	-29~80	Liquefied petroleum gas
AHN42F-16C	16	1.0-1.6
AHN42F-25	25	1.6-2.5

Main component materials

Serial number	Part name	Material
1	Valve body	WCB
2	Valve disc	2Cr13
3	Guide sleeve	2Cr13
4	Valve stem	2Cr13
5	Valve cover	WCB
6	Spring	50CrVA
7	Valve cap	WCB

Main dimensions

Nominal pressure PN(MPa)	Nominal diameter DN(mm)	Dimensions(mm)
Nominal pressure PN(MPa)	Nominal diameter DN(mm)	d₀	L	H
1.6 2.5 4.0	40	25	200	240
	50	40	230	270
	80	50	310	490
	100	80	350	550
	150	100	480	710

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Safety valve AHN42F series

Safety valve

Safety valve AHN42F series

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