Safety Back-Flow Valve

Safety back-flow valve applications

The valve is to be used in liquid reflux pipelines in the liquefied petroleum gas pump outlet with operation temperature of -40~+80℃. It is used for the safe reflux of over-pressure medium. When the pump front pressure exceeds regulated value, the valve will open automatically and reflux to the tank so as to ensure the safe operation of equipments and pipelines.

Safety back-flow valve brief figure of structure

Safety back-flow valve dimensions (mm)

Nominal diameter DN(mm)	Dimension (mm)
	D	D1	D2	b	z-￠d	L	H
40	150	110	85	16	4-19	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

Nominal Diameter DN (mm)	AH42F-16C/P Dimensions (mm)																	Weight (Kg)
	L	L1	D	D1	D2	b	f	Z-￠d	DN’	D’	D1’	D2’	b’	f’	Z-￠d’	H	do
25	100	95	115	85	65	14	2	4-￠14	32	140	100	78	16	3	4-￠18	250	15	12
32	115	100	140	100	78	16	2	4-￠18	40	150	110	85	16	3	4-￠18	280	20	14
40	120	110	150	110	85	16	3	4-￠18	50	165	125	100	16	3	4-￠18	290	25	16
50	135	120	165	125	100	16	3	4-￠18	65	185	145	120	18	3	4--￠18	341	32	21
80	170	135	200	160	135	18	3	8-￠18	100	220	180	155	20	3	8-￠18	470	50	43
100	205	160	220	180	155	20	3	8-￠18	125	250	210	185	22	3	8-￠18	580	65	65
150	250	210	285	240	210	24	3	8-￠22	175	315	270	240	26	3	8-￠23	670	100	110

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