Wafer Check Valve (Cast Steel Non-Return Valve)

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Website: https://customsteelvalve.com/wafer-check-valve-1-4-4.html

Model: H71

• Nominal Diameter: 1/2"-10"
• Materials: 316, CF8M, 1.4408, WCB, 304, CF8, etc.
• Design & Manufacture: GB/T 12236
• Face-to-Face: GB/T 12221
• Flange End: JB/T79
• Inspection & Testing: JB/T9092
• Surface Treatment: Pickling, Passivation, Polishing (or as per customer request)
• Operating Temperature: ≤ 120°C
• Suitable Media: Water, Steam, Oil, Gas, Acids, Alkalis, etc.

Materials

Model	Body	Disc	Spring	Holder
H71H	Carbon Steel	Stainless Steel 304	Stainless Steel 304	Stainless Steel 304
H71W	Stainless Steel CF8	Stainless Steel 304	Stainless Steel 304	Stainless Steel 304
H71W	Stainless Steel CF8M	Stainless Steel CF8M	Stainless Steel CF8M	Stainless Steel CF8M
H71W	Stainless Steel CF8L	Stainless Steel 316L	Stainless Steel 316L	Stainless Steel 316L

Performance Parameters

Model	Min. Opening Pressure	Water, Steam, Gas, Oil	Applicable Temperature
H71H	0.05kg/cm²	Water, Oil, Steam	-29℃ to 425℃
H71W	0.05kg/cm²	Nitric Acid and Other Corrosive Media	-196℃ to 540℃
H71W	0.05kg/cm²	Acetic Acid and Other Corrosive Media	-196℃ to 540℃
H71W	0.05kg/cm²	Urea and Other Corrosive Media	-196℃ to 455℃

Dimensions (mm)

Size		PN1.0MPa			PN1.6MPa				PN2.5MPa		PN4.0MPa
NPS	DN		L	D		L	D	L		D		L	D
1/2"	15	30		52	30		52		30	52	30		52
3/4"	20	30		62	30		62		30	62	30		62
1"	25	30		72	30		72		30	72	30		72
1 1/4"	32	35		83	35		83		35	83	35		83
1 1/2"	40	35		93	35		93		35	93	35		93
2"	50	40		108	40		108		40	108	40		108
2 1/2"	65	50		128	50		128		50	128	50		128
3"	80	60		142	60		142		60	142	60		142
4"	100	75		162	75		162		75	168	75		168
5"	125	90		192	90		192		90	194	90		194
6"	150	105		218	105		218		105	224	105		224
8"	200	112		273	112		273		112	284	112		291
10"	250	140		328	140		329		140	341	140		353