Product Description Model NO.: H74H Connection Form: Wafer Pressure: 150lb-600lb Sealing Form: Metal Seat Standard: ANSI Characteristic: Wafer Check Valve Pre-Temp. Rating: Asme B16.34 Ends Connection: Wafer Certificate 1: Dnv CE 0575 Certificate 3: API 6D Trademark: VATAC or OEM Origin: China Material: Steel Structure: Wafer Type Single/Dual Plate Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence Flow Direction: Unidirection Application: Industrial Usage, Water Industrial Usage, Household Usage Design & Manufacture: API 594, API 6D, Asme B16.34 Face to Face: API 594 Inspect & Test: API 598 Certificate 2: ISO9001:2008 Certificate 4: API 600 Specification: API, ANSI, ASME, DIN, JIS, GB etc. HS Code: 8481804090 API 594 Cast or Forged Steel Wafer Check Valve Manufacturer Conform to API 594, API 6D, and ASME B16.34.  They are tested according to API 598, and marked as per MSS SP-25
 
1. Construction is as follows:  

- Single Disc

- With Spring

- Swing Disc or Lift Disc

- Soft or Metal Seated

- Retainer or Retainer Less Design

- Wafer Ends to Suit for Flanged Ends(ASME B16.5 and B16.47 A/B)

 
2. Main Part & Materials 

Part Names	Part Materials
Body	A105	LF2	F22	F304	F316	F304L	F316L	C83600/C95800
Bonnet	A105	LF2	F22	F304	F316	F304L	F316L	C83600/C95800
Disc/Ball/Wedge	A105	LF2	F22	F304	F316	F304L	F316L	C83600/C95800
Seat/Seat Ring	13%Cr	SS304	13%Cr	SS304	SS316	SS304L	SS316L	C83600/C95800
	PTFE/NBR/EPDM/VITON
Packing	Graphite/PTFE
Gasket	SS304+Graphite/SS304+Graphite
Bolts/Nuts	B7/2H	L7/4	B16/4	B8/8	B8M/8M	B8/8	B8M/8M	B8M/8M
Suitable Medium	W.O.G etc.			HNO3, CH3OOH etc.				Sea Water etc.
Suitable Temperature	-29~425 °C	-46~340 °C	-46~340 °C	-196~427 °C	-196~427 °C	-196~427 °C	-196~427 °C	-29~220 °C

 
3. Normal Pressure Rating
PN10~PN420, CLASS150~2500

4. Normal Size Range
DN15~DN1000, 1/2"~40" 

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