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Double-Door Check Valves

Protect against flow reversal with Double-Door Check Valves. These check valves are manufactured with lightweight disks and quick, responsive springs for automatic closure for top performance. Find a range of dimensions, in working pressure ratings of up to 200psi and a range of temperature ratings. Additional seat material options are available upon request.

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Product Details

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Features

  • Small, lightweight, and easy to maintain.
  • Two torsion springs close valve plates quickly and automatically.
  • Quick spring action prevents back-flow, eliminates water hammering, and provides minimal head loss.
  • Double-Door Check Valves can be installed vertically or horizontally.
  • Applications include HVAC, compressed air; Water supply and discharge; Irrigation and reclaim water; Process water.
 

Dimensions: Double-Door Check Valves

ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE STATED

API Part Number Nominal Size B ØE ØA Approximate Weight lbs
CV0200-XXXX-EP 2 1.70 2.56 4.13 3.3
CV0250-XXXX-EP 2.5 1.81 3.15 4.80 5.3
CV0300-XXXX-EP 3 2.52 3.70 5.20 7.9
CV0400-XXXX-EP 4 2.52 4.61 6.18 12.6
CV0500-XXXX-EP 5 2.76 5.71 7.40 16.1
CV0600-XXXX-EP 6 2.99 6.69 8.58 19.8
CV0800-XXXX-EP 8 3.50 8.82 10.55 37.5
CV1000-XXXX-EP 10 4.49 10.43 12.91 57.3
CV1200-XXXX-EP 12 4.49 12.20 16.02 92.6
CV1400-XXXX-EP 14 5.00 14.17 17.52 121.3
CV1600-XXXX-EP 16 5.51 16.14 20.08 165.3
CV1800-XXXX-EP 18 5.98 17.72 21.54 225.0
CV2000-XXXX-EP 20 5.98 19.88 23.78 236.0
CV2400-XXXX-EP 24 7.01 24.57 28.50 365.0
 

Part Number Structure

Part Number Section Options
Type CV = Check Valve
Size XXXX = Size in inches going out 2 decimal places
Disc Material *Denoted with “XXXX” NPDI = Nickel Plated Ductile Iron 304 = 304 Stainless Steel
Seat Material EP = EPDM
 

Operating Conditions

Nominal Size 2″-18″ 20″-24″
Working Pressure 200 psi 150 psi
Test Pressure Shell 300 psi 225 psi
Seat 220 psi 168 psi
Working Temperature EPDM Seat 10°-250° F 10°-250° F
 

Materials

Part Material
Body Cast Iron – ASTM A126 Cl. B
Disc Nickel Plated Ductile Iron OR 304 Stainless Steel
Hinge Pin Stainless Steel
Stop Pin Stainless Steel
Spring Stainless Steel
Seat EPDM
Finish Epoxy Coated – Blue
  Notes:
  • Not for use in Oil & Gas industries.
  • Valve seat is available in other materials including Neoprene and NBR (may be subject to minimum order quantity)
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