VALVAX
VX-DPCV-DF-1211

Dual Plate Check Valve – Double Flange End

Retainer-less, metal-seated dual plate check valve per API 594 in a full double-flange body per ASME B16.5. Self-supporting on the line without relying on the mating flanges, with the same INCONEL X-750 non-slam closure as the Wafer and Full Lug types.

API 594ASME B16.5
Pressure
Class 150–2500
Size Range
2" to 24"
Testing
API 598

⚠ Pending engineering review: Pending engineering sign-off: pressure figure is a hydro-test (shell) value, not a confirmed Class rating.

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VX-DPCV-DF-1211HYDRO-TESTED · API 598
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VX-DPCV-DF-1211One pressure envelope · scroll to explore

01

Pressure Rating

Class 150–2500 (32–651 Kg/cm²)

Reference standard & materials

Same data as the printed catalogue

Reference standard

MFG. STD
API 594
Face to Face
API 594
Flange End
ASME B16.5
Insp. & Test.
API 598
Press & Temp.
ASME B16.34
Dual Plate Check Valve · Flange section with numbered callouts

Material of construction

No.DescriptionCarbon SteelAlloy SteelStainless SteelDuplex Stainless Steel
01BodyASTM A216 GR.WCBASTM A217 GR.WC9ASTM A351 GR.CF8MASTM A995 GR.5A
02Seat RingIntegral with body + Stellite 6Integral with body + Stellite 6Integral with body + Stellite 6Integral with body
03DiscASTM A216 GR.WCB + overlay 13% Cr. or ASTM A217 GR.CA15ASTM A217 GR.WC9 + Stellite 6ASTM A351 GR.CF8M or Stellite 6ASTM A995 GR.5A
04Hinge PinASTM A182 GR.F6aASTM A182 GR.F6aSS 316ASTM A182 GR.F53
05Stopper PinASTM A182 GR.F6aASTM A182 GR.F6aSS 316ASTM A182 GR.F53
06Body WasherASTM A182 GR.F6aASTM A182 GR.F6aSS 316ASTM A182 GR.F53
07Disc WasherASTM A182 GR.F6aASTM A182 GR.F6aSS 316ASTM A182 GR.F53
08Spring WasherASTM A182 GR.F6aASTM A182 GR.F6aSS 316ASTM A182 GR.F53
09Spacer BushASTM A216 GR.WCBASTM A217 GR.WC9ASTM A351 GR.CF8MASTM A995 GR.5A
10SpringInconel X-750 / 718Inconel X-750 / 718Inconel X-750 / 718Inconel X-750 / 718

Dimensions

mm · ASME B16.5 flange details · weights on request

Class
Dual Plate Check Valve · Flange dimensioned section
150#Model no. VX-DPCV-DF-1211
AFlange Details, ASME B16.5
SizeDNFEODPCDRFDTØHNF
2"50114152120.692.114.319041.5
2.5"65—178139.7104.815.719041.5
3"80121190152.4127.017.519041.5
4"100121229190.5157.222.419081.5
5"125————————
6"150130279241.3215.923.922081.5
8"200127343298.4269.926.922081.5
10"250146406362.0323.828.425121.5
12"300181483431.8381.030.225121.5
14"350184533476.2412.833.329121.5
16"400191597539.8469.935.129161.5
18"450203635577.8533.438.132161.5
20"500219698635.0584.241.132201.5
24"600222813749.3692.246.035201.5

Technical specifications

Material
Body: ASTM A216 GR.WCB (CS) / ASTM A217 GR.WC9 (Alloy) / ASTM A351 GR.CF8M (SS) / ASTM A995 GR.5A (Duplex)
Pressure Rating
Class 150–2500 (32–651 Kg/cm²)
Temperature Range
-29°C to +427°C (per ASME B16.34)
Eng Note
Pending engineering sign-off: pressure figure is a hydro-test (shell) value, not a confirmed Class rating.
Size Range
2" to 24" (DN 50–600, availability varies by class)
End Type
Double Flange — flanged both ends per ASME B16.5, self-supporting without clamping to the mating flanges
Disc
ASTM A216 GR.WCB + 13% Cr. overlay or ASTM A217 GR.CA15 (CS) / ASTM A217 GR.WC9 + Stellite 6 (Alloy) / ASTM A351 GR.CF8M + Stellite 6 (SS) / ASTM A182 GR.F53 (Duplex)
Hinge Pin
ASTM A182 GR.F6a (CS/Alloy) / SS 316 (SS) / ASTM A182 GR.F53 (Duplex)
Spring
INCONEL X-750
Seat Ring
Integral with body + Stellite 6
Model Numbers
VX-DPCV-DF-1211 (150#) / 1212 (300#) / 1213 (600#) / 1214 (900#) / 1215 (1500#) / 1216 (2500#)

Standards & testing

  • MFG. STD: API 594
  • Face to Face: API 594
  • Flange End: ASME B16.5
  • Flange RTJ End: ASME B16.5
  • Insp. & Test: API 598
  • Press. & Temp: ASME B16.34

Custom engineering

Special trims, exotic materials and non-standard dimensions are available against your datasheet — send it with your quote request and our engineering team will respond with a compliant proposal.

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