Dual Plate Type Check Valve

Dual Plate Type Check Valve Manufacturer, Double Disc, Flap, Door Type Check Valve - NRV, Wafer - Lug Type - Flanged End Check Valve, Non Return Valve, Spring Loaded Dual Flap Check Valve Exporter, Suppliers, Stockist, Importer

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


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


Dual Plate Type Check Valve, Spring Loaded


A name of the product “DUAL PLATE CHECK VALVE” self say about design construction and operation of valve. This type of check valve is simple assembly of 1) dual -double flap or can say door, 2) single piece casted heavy duty body, 3) spring and 4) stem. On the centre of body two stem holes are provided to mount / fix dual flap plate and which perform from centre as like a hinge in direction of flow with tension of spring. One stem perform as flap holes guide shaft and another as disc opening limit stop pin. Spring supports to the disc to get normal close position of valve.

Body have choice of either elastomer soft rubber seats or metal to metal seat for higher pressure and temperature application with StelliteF6 Hard face.  In elastomer rubber seated check valve seat choice options are Neoprene, EPDM, NBR, Nitrile, Buna-N, Hypalon, Ebonite, Silicon, Viton etc.

 

 Dual Plate Type Check Valve Manufacturer, Double Disc, Flap, Door Type Check Valve - NRV, Wafer - Lug Type - Flanged End Check Valve, Non Return Valve, Spring Loaded Dual Flap Check Valve Exporter, Suppliers, Stockist, Importer    Dual Flap Type Check Valve, Wafer Type, Spring Loaded Non Return Valve


Main advantages to use of “DUAL FLAP - PLATE – DOOR TYPE CHECK VALVE” is less weight, zero maintenance, lower cost, high performance, fast delivery, easy to installation, easy to produce in a big higher size of check valves too.

Nivz Valves & Automation manufacturer and exporter of dual disc plate non slam check valve - NRV in various body materials like Cast Iron, Ductile Iron, S.G. Iron, Cast Carbon Steel, Stainless Steel, Low Temperature Carbon Steel, Alloy Steel, Duplex Steel, Super Duplex Steel, Alloy 20, Hastelloy-C22, Hastelloy C-276, Monel, Inconel various grade and more available on request.

Application of Wafer Type (Flangeless, Sandwich Type Body), Full Lug Type Body Design & Double Flanged End connection Dual Plate Type Check Valves is in Fire Water, Cooling Water Pump Line, Oil & Gas Pipe Line, High Pressure Steam Pipe Line, High Temperature Oil, Compressor Air Line, Refinery, Fertilizer Plant, Sugar Mill, Paper Mill, Steel Plant, Thermal Power Plant, PVC – Vinyl Plant, Hydrocarbon Industries, Agro Chemical Plant, Petro Chemical Industries, Cement Plant, Textile Industries, Process House, Rayon Plant, Staple Fibre Unit, Soda Ash Manufacturing Plant, Sulphuric Acid Plant & Polymer Plant.

A complete range of Dual Plate Type Check Valve Manufacturer, Double Disc, Flap, Door Type Check Valve - NRV, Wafer - Lug Type - Flanged End Check Valve, Non Return Valve, Spring Loaded Dual Flap Check Valve Exporter, Suppliers, Stockist, Importer by Nivz Valves & Automation.


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

Drawing / Dimensions of Wafer Body Dual Plate Check Valve

 

Dual Plate Check Valve Drawing, Catalogue, Dimension, Literature, Download


Drawing Dimensions of Swing Type Check Valve download