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Liner full rubber desulfurization check valve

Model: H77X
Nominal diameter: DN40 ~ 800mm
Nominal: PN1.0 ~ 2.5MPa
Suitable medium: water, gas, oil, nitric
Design criteria: JB / T8527-97
GB / T13927-92: Standard Test
Length structure Meet: GB / T12221-1989, ISO5752-8

model	Nominal pressure PN (MPa)	Test pressure PN (MPa)		Working temperature (℃)	Suitable media
		case	seal
H77X H77H H77Y H77W	1	1.5	1.1	Soft Seal: <80 Hard Seal: <450	Water, gas, oil, nitric acid and so on
	1.6	2.4	1.76
	2.5	3.75	2.75
	4	6	4.4
	6.4	9.6	7

Said diameter DN (mm)	L	D 2	D 3		Nominal diameter DN (mm)	L	D 2	D 3
			H77X	H77H				H77X	H77H
				H77Y					H77Y
				H77W					H77W
50	43	100	43	46	400	140	485	376	390
80	64	135	71	80	450	152	545	427	427
100	64	155	91.5	94	500	152	608	479	490
125	70	185	115	118	600	178	718	579	588
150	76	210	141	145	700	229	800	675	686
200	89	265	191	200	800	241	905	774	784
250	114	320	230	250	900	241	1005	875	-
300	114	320	230	250	900	241	1005	875	-
350	127	435	340	340	1200	350	1325	1164	-

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