Zeel Engineers

Dual Plate Type Check Valve

Spring Loaded Double Door – Flap / Dual Plate – Disc Non Return Valve – Check Valve

Dual Plate Check Valve has various names, familiar and known by the list below:

Dual Plate Type Check Valve – Non Return Valve – NRV
Double Door Type Check Valve – Non Return Valve – NRV
Dual Flap Type Check Valve – Non Return Valve – NRV
Double Flap Type Check Valve – Non Return Valve – NRV
Inconel X 750 Spring Loaded Dual Plate Check Valve – Non Return Valve – NRV
Wafer Type Non Slam Spring Loaded Check Valve – Non Return Valve – NRV
Spring Loaded Double Door Type Wafer Check Valve – Non Return Valve – NRV
Lug Type Body Double Door / Dual Plate Type Check Valve – Horizontal / Vertical NRV
Double Flanged End Dual Plate / Double Door Type Check Valve – Horizontal / Vertical NRV
Retainerless Dual Plate / Flap / Door Type Check Valve with Spring Loaded, Flanged/Wafer/Lug Body
Metal to Metal Seated High Temperature Application Dual Plate Check Valve – Non Return Valve – NRV
Soft Rubber Seated Zero Leakage Dual Plate Type Check Valve Non Return Valve – NRV

Product Details

Single Piece, Heavy Duty Construction Body of Check Valve: Design confirms to as per API 594 / API 6D Standard

Retainerless Dual Plate Check Valve End Connections: Wafer – Flangeless – Sandwich Pattern / Double Flanged End / Full Lug Type Design

Double Door Type Non Return Valve Pressure Rating: Class 125, Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, PN6, PN10, PN16, PN25, PN40, PN64, PN 100

Spring Loaded Dual Plate Check Valve Manufacturing Size Range: DN50/50mm/2”/Two Inch, DN65/65mm/2-1/2”/Two and Half Inch, DN80/80mm/3”/Three Inch, DN100/100mm/4”/Four Inch, DN125/125mm/5”/Five Inch, DN150/150mm/6”/Six Inch, DN200/200mm/8”/Eight Inch, DN250/250mm/10”/Ten Inch, DN300/300mm/12”/Twelve Inch, DN350/350mm/14”/Fourteen Inch, DN400/400mm/16”/Sixteen Inch, DN 450/450mm18”/Eighteen Inch, DN500/500mm/20”/Twenty Inch, DN550/550mm/22”/Twenty Two Inch, DN600/600mm/24”/Twenty Four Inch Size and big more large size of NRV – Dual Plate Check Valve can manufacture and supply on request.

Dual Flap/Plate Check Valve Model Series No: NDP15

Design & Testing International Standard of Dual Plate NRV

Design Standard	:	API 594 / API 6D Standard
Inspection & Testing Standard	:	API 598
Flange To Flange Distance	:	As Per ANSI B API 594 / API 6D / ANSI B 16.10
End Connection	:	Wafer Type, Flangeless, Sandiwch Pattern
	:	Suitable to mount between two flanges.
Manufacuring Size Range	:	3″ (DN80) to 24″(DN 600)
Pressure Rating of Valve	:	150# / 300#
	:	PN 10 / PN 16 / PN 25 / PN 40

MOC (Bill of Material – BOM) for Dual Plate Type Check Valve

Body & Disc Material of Dual Plate Check Valve	:	ASTM A 126 GR. B / IS 210 GR. FG 200/220/260 (Cast Iron) / Ductile Iron / Nodular C.I.
	:	ASTM A 216 GR. WCB (Cast Carbon Steel)
	:	ASTM A 351 GR. CF 8 / CF 8M (SS 304 / SS 316)
	:	ASTM A 351 GR. CF 3 / CF 3M (SS 304L / SS 316L)
	:	ASTM A 351 GR. CN7M / ASTM A351 Gr. CF8C
	:	ASTM A351 Gr. CD4Mcu / ASTM A351 Gr. CK3MCuN
	:	ASTM A352 Gr. LCA / LCB / LCC
	:	ASTM A217 Gr. WC1 / WC6 / WC9 / C5 / C12
	:	ASTM A494 Gr. CW6MC / CW2M / CY40 / CU5MCuC
	:	NACE MR0175 / NACE MR

Seat Material of Dual Plate Check Valve	:	Soft Rubber Seat for Zero Leakage
	:	Neoprene / EPDM / NBR / Bun – N / Viton / Silicon
	:	Metal to Metal Body Disc Face contact seat
	:	Stellited F6 Hard Face

Hinge Pin / Stem	:	ASTM A 276 T – 304/316 (Stainless Steel 304/316)
	:	ASTM A 276 T – 304L/316L (Stainless Steel 304L/316L)
	:	Alloy 20 / Duplex Steel Steel / Super Duplex Steel
	:	Hastelloy C / Hastelloy C 276

Spring	:	Inconel X 750
	:	S.S. 304/316/304L/316L

Dual Plate Type Check Valve

Dual Plate Type Check Valve

Product Details

Design & Testing International Standard of Dual Plate NRV

MOC (Bill of Material – BOM) for Dual Plate Type Check Valve

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