Cast Steel Lug Dual Plate Check Valve

• Material: Stainless Steel
• Connection Form: Lug
• Structure: Swing
• Function: Ddcv Double Lobe, Nrvr Silence, Nrvz Silence, Nrvg Silence
• Sealing Form: Metal or Soft
• Flow Direction: Unidirection
• Model NO.: H74H
• Standard: ANSI
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Characteristic: Dual Plate 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: Asme B16.5/16.47
• Inspect & Test: API 598
• Certificate 1: Dnv CE 0575
• Certificate 2: ISO 9001: 2008
• Transport Package: Sea Worthy
• Specification: API 6D, BS1868, DIN3202, ISO
• Trademark: VATAC or OEM
• Origin: Zhejiang, China
• HS Code: 8481804090
• Production Capacity: 65000 PCS Per Year

Product Description

Product Description:

  Dual Plate wafer check 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

Construction is as follows:

- Dual Plate

- With Spring

- Round, Full Lug or Double Flange

- 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	WCB	LCB	WC6	CF8	CF8M	CF3	CF3M	C83600/C95800
Bonnet	WCB	LCB	WC6	CF8	CF8M	CF3	CF3M	C83600/C95800
Disc/Ball/Wedge	WCB	LCB	WC6	CF8	CF8M	CF3	CF3M	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

DN40~DN1000, 11/2"~40"