Parallel safety reflux valve AHN42F-P25

This valve is installed on the liquid phase reflux pipeline at the outlet of the liquefied petroleum gas station tank pump. When the pressure before the pump exceeds the specified value, the valve automatically opens and plays a reflux role, ensuring the reliable operation of equipment and pipelines.

Product drawing

Product drawing.png

Product dimensions

DN	D	D1	D2	b	Z-φd	L	H
40	150	110	85	16	4-18	200	236
50	165	125	100	16	4-18	230	266
65	185	145	120	20	4-18	290	430
80	200	160	135	20	8-18	310	490
100	215	180	155	22	8-18	350	548
150	280	240	210	24	8-23	480	706

Technical Documentation

1.execution standard：GB/T 12243-2021

2.Structural length standard：GB/T12221-2005

3.Flange Standard：GB/T9113.1-2000

4.Test Standard：GB/T13927-2022

Product Parts List

serial number	name	AHN42F-16/25/40/64/100C material	AHN42F-16/25/40/64/100P material	AHN42F-16/25/40/64/100R material
1	Valve body	WCB	CF8	CF8M
2	Valve seat	20Cr13	304	316
3	Adjustment Circle	ZG20Cr13	CF8	CF8M
4	Recoil plate	ZG20Cr13	CF8	316
5	Valve disc	20Cr13	304	316
6	guide bushing	20Cr13	304	316
7	Valve cover	ZG230-450	ZG230-450	ZG230-450
8	Spring	50CrVA	50CrVACovering fluoroplastic	50CrVACovering fluoroplastic
9	Valve stem	20Cr13	304	316
10	Wrench	ZG200-400	ZG200-400	ZG200-400
11	adjusting screw	45	20Cr13	20Cr13
12	protective cover	ZG200-400	ZG200-400	316
13	Sealing surface material	Welding Co based Hard Alloy

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