API 594 Single Disc Wafer Check Valve (Sandwich Valve)

• Customization: Available
• Material: Steel
• Connection Form: Wafer
• Model NO.: H74W
• Structure: Single Disc Wafer
• Pressure: Low Pressure
• Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
• Flow Direction: Unidirection
• Standard: ANSI
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Characteristic: Single Disc Wafer Check Valve
• Design & Manufacture: API 594, API 6D, Asme B16.34
• Pre-Temp. Rating: Asme B16.34
• Face to Face: API 594
• Ends Connection: Wafer
• Inspect & Test: API 598
• Certificate 1: Dnv CE 0575
• Certificate 2: ISO9001:2008
• Certificate 3: API 6D
• Certificate 4: API 600
• Transport Package: Sea Worthy or Air Worthy
• Specification: API, ANSI, ASME, DIN, JIS, GB etc.
• Trademark: VATAC or OEM
• Origin: China
• HS Code: 84818010
• Production Capacity: 65000 T Per Year

Product Description

API 594 Single Disc Wafer Check Valve (Sandwich Valve) Conform to API 594, API 6D, and ASME B16.34.  They are tested according to API 598, and marked as per MSS SP-25

Structure: Check
Pressure: Low to high pressure
Power: Hydraulic
Material: Casting
Temperature of Media: Normal Temperature
Media: Base

1) Sizes: 1/2''-40''
2) Class: 150-1, 500Lbs
3) Material: WCB, LCB, CF8 304, CF8M 316, CF3 304L, CF3M 316L, WC1, WC6, WC9, CN7M, Monel

4) Stardards:
A) Design and manufacture: API 6D, API594
B) Face to face: API 6D, API594, DIN 3202
C) End flange dimensions: ANSI B16.5, ANSI B16.47, API605, MSS SP-44, ISO7005-1, DIN2543-2548
D) Pressure-temperature ratings: ASME B 16.34
5) Inspection and test: API598, API 6D

Structure features:

 
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)

 
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

 
Normal Pressure Rating
PN10~PN420, CLASS150~2500

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