Plast-O-Matic CKS Diaphragm Check Valves
Plast-O-Matic CKS Diaphragm Check Valves

Plast-O-Matic CKS Diaphragm Check Valves

Series CKS Check Valves are normally-closed in design. They feature a corrosion resistant PFA encapsulated spring which energizes a poppet seal that will neither stick nor chatter and is automatic in action. The valves are not dependent upon gravity or reverse flow and represent a significant improvement over ball check valves. They can be mounted in any position. Even in the absence of reverse flow or pressure, the poppet will automatically reposition itself to seal against the valve seat. The unique poppet will seal in the identical location every time, producing a reliable and repetitive seal.

  • PVC, Corzan® CPVC or glass filled polypropylene
  • EPDM or Viton™ diaphragms
  • PFA encapsulated SS spring
  • Leak-free sealing
  • Will not stick or chatter
  • Female NPT
  • Positive repetitive sealing
  • Valve begins to open at approximately 1 to 1.5 psi
  • Pressure rating: 100 psi @ 75°F
  • Maximum temp.: 140°F (PVC) & 180°F (PP & CPVC)
Stock Description Catalog Pg. Price
1-1/2" NPT PVC CKS Diaphragm Check Valve with EPDM Seals
88252
1-1/2" NPT PVC CKS Diaphragm Check Valve with EPDM Seals
$254.78​/Each
Save 5%2+$242.04/Each
Save 10%4+$229.30/Each
Save 15%12+$216.56/Each
P-420
$254.78​/Each
In Stock
2" NPT PVC CKS Diaphragm Check Valve with EPDM Seals
88253
2" NPT PVC CKS Diaphragm Check Valve with EPDM Seals
$342.95​/Each
Save 5%2+$325.80/Each
Save 10%4+$308.65/Each
Save 15%12+$291.50/Each
P-420
$342.95​/Each
In Stock
3" NPT PVC CKS Diaphragm Check Valve with EPDM Seals
88254
3" NPT PVC CKS Diaphragm Check Valve with EPDM Seals
$624.41​/Each
Save 5%2+$593.19/Each
Save 10%4+$561.96/Each
Save 15%12+$530.74/Each
P-420
$624.41​/Each
Drop Ship
4" NPT PVC CKS Diaphragm Check Valve with EPDM Seals
88255
4" NPT PVC CKS Diaphragm Check Valve with EPDM Seals
$962.72​/Each
Save 5%2+$914.58/Each
Save 10%4+$866.44/Each
Save 15%12+$818.31/Each
P-420
$962.72​/Each
Drop Ship
1-1/2" NPT PVC CKS Diaphragm Check Valve with Viton™ Seals
88261
1-1/2" NPT PVC CKS Diaphragm Check Valve with Viton™ Seals
$260.01​/Each
Save 5%2+$247.01/Each
Save 10%4+$234.00/Each
Save 15%12+$221.00/Each
P-420
$260.01​/Each
In Stock
2" NPT PVC CKS Diaphragm Check Valve with Viton™ Seals
88262
2" NPT PVC CKS Diaphragm Check Valve with Viton™ Seals
$349.79​/Each
Save 5%2+$332.30/Each
Save 10%4+$314.81/Each
Save 15%12+$297.32/Each
P-420
$349.79​/Each
In Stock
3" NPT PVC CKS Diaphragm Check Valve with Viton™ Seals
88263
3" NPT PVC CKS Diaphragm Check Valve with Viton™ Seals
$634.86​/Each
Save 5%2+$603.11/Each
Save 10%4+$571.37/Each
Save 15%12+$539.63/Each
P-420
$634.86​/Each
Drop Ship
4" NPT PVC CKS Diaphragm Check Valve with Viton™ Seals
88264
4" NPT PVC CKS Diaphragm Check Valve with Viton™ Seals
$994.04​/Each
Save 5%2+$944.33/Each
Save 10%4+$894.63/Each
Save 15%12+$844.93/Each
P-420
$994.04​/Each
Drop Ship
1-1/2" NPT Polypropylene CKS Diaphragm Check Valve with EPDM Seals
88270
1-1/2" NPT Polypropylene CKS Diaphragm Check Valve with EPDM Seals
$299.68​/Each
Save 5%2+$284.69/Each
Save 10%4+$269.71/Each
Save 15%12+$254.72/Each
P-420
$299.68​/Each
In Stock
2" NPT Polypropylene CKS Diaphragm Check Valve with EPDM Seals
88271
2" NPT Polypropylene CKS Diaphragm Check Valve with EPDM Seals
$360.24​/Each
Save 5%2+$342.22/Each
Save 10%4+$324.21/Each
Save 15%12+$306.20/Each
P-420
$360.24​/Each
In Stock
3" NPT Polypropylene CKS Diaphragm Check Valve with EPDM Seals
88272
3" NPT Polypropylene CKS Diaphragm Check Valve with EPDM Seals
$687.04​/Each
Save 5%2+$652.68/Each
Save 10%4+$618.33/Each
Save 15%12+$583.98/Each
P-420
$687.04​/Each
Drop Ship
4" NPT Polypropylene CKS Diaphragm Check Valve with EPDM Seals
88273
4" NPT Polypropylene CKS Diaphragm Check Valve with EPDM Seals
$1,221.67​/Each
Save 5%2+$1160.58/Each
Save 10%4+$1099.50/Each
Save 15%12+$1038.42/Each
P-420
$1,221.67​/Each
Drop Ship
1-1/2" NPT Polypropylene CKS Diaphragm Check Valve with Viton™ Seals
88279
1-1/2" NPT Polypropylene CKS Diaphragm Check Valve with Viton™ Seals
$304.90​/Each
Save 5%2+$289.65/Each
Save 10%4+$274.41/Each
Save 15%12+$259.16/Each
P-420
$304.90​/Each
In Stock
2" NPT Polypropylene CKS Diaphragm Check Valve with Viton™ Seals
88280
2" NPT Polypropylene CKS Diaphragm Check Valve with Viton™ Seals
$355.02​/Each
Save 5%2+$337.26/Each
Save 10%4+$319.51/Each
Save 15%12+$301.76/Each
P-420
$355.02​/Each
In Stock
3" NPT Polypropylene CKS Diaphragm Check Valve with Viton™ Seals
88281
3" NPT Polypropylene CKS Diaphragm Check Valve with Viton™ Seals
$692.27​/Each
Save 5%2+$657.65/Each
Save 10%4+$623.04/Each
Save 15%12+$588.43/Each
P-420
$692.27​/Each
Drop Ship
4" NPT Polypropylene CKS Diaphragm Check Valve with Viton™ Seals
88282
4" NPT Polypropylene CKS Diaphragm Check Valve with Viton™ Seals
$1,208.09​/Each
Save 5%2+$1147.68/Each
Save 10%4+$1087.28/Each
Save 15%12+$1026.87/Each
P-420
$1,208.09​/Each
Drop Ship
1-1/2" NPT CPVC CKS Diaphragm Check Valve with EPDM Seals
88286
1-1/2" NPT CPVC CKS Diaphragm Check Valve with EPDM Seals
$335.18​/Each
Save 5%2+$318.42/Each
Save 10%4+$301.66/Each
Save 15%12+$284.90/Each
P-420
$335.18​/Each
In Stock
2" NPT CPVC CKS Diaphragm Check Valve with EPDM Seals
88287
2" NPT CPVC CKS Diaphragm Check Valve with EPDM Seals
$428.11​/Each
Save 5%2+$406.70/Each
Save 10%4+$385.29/Each
Save 15%12+$363.89/Each
P-420
$428.11​/Each
In Stock
3" NPT CPVC CKS Diaphragm Check Valve with EPDM Seals
88288
3" NPT CPVC CKS Diaphragm Check Valve with EPDM Seals
$982.55​/Each
Save 5%2+$933.42/Each
Save 10%4+$884.29/Each
Save 15%12+$835.16/Each
P-420
$982.55​/Each
Drop Ship
4" NPT CPVC CKS Diaphragm Check Valve with EPDM Seals
88289
4" NPT CPVC CKS Diaphragm Check Valve with EPDM Seals
$1,951.54​/Each
Save 5%2+$1853.96/Each
Save 10%4+$1756.38/Each
Save 15%12+$1658.80/Each
P-420
$1,951.54​/Each
Drop Ship
1-1/2" NPT CPVC CKS Diaphragm Check Valve with Viton™ Seals
88293
1-1/2" NPT CPVC CKS Diaphragm Check Valve with Viton™ Seals
$342.49​/Each
Save 5%2+$325.36/Each
Save 10%4+$308.24/Each
Save 15%12+$291.11/Each
P-420
$342.49​/Each
In Stock
2" NPT CPVC CKS Diaphragm Check Valve with Viton™ Seals
88294
2" NPT CPVC CKS Diaphragm Check Valve with Viton™ Seals
$433.34​/Each
Save 5%2+$411.67/Each
Save 10%4+$390.00/Each
Save 15%12+$368.33/Each
P-420
$433.34​/Each
In Stock
3" NPT CPVC CKS Diaphragm Check Valve with Viton™ Seals
88295
3" NPT CPVC CKS Diaphragm Check Valve with Viton™ Seals
$987.78​/Each
Save 5%2+$938.39/Each
Save 10%4+$889.00/Each
Save 15%12+$839.61/Each
P-420
$987.78​/Each
Drop Ship
4" NPT CPVC CKS Diaphragm Check Valve with Viton™ Seals
88296
4" NPT CPVC CKS Diaphragm Check Valve with Viton™ Seals
$1,981.82​/Each
Save 5%2+$1882.72/Each
Save 10%4+$1783.63/Each
Save 15%12+$1684.54/Each
P-420
$1,981.82​/Each
Drop Ship

More in This Category

Asahi® PVDF Check Valves
Asahi® PVDF Check Valves
Shop Now
Banjo® Polypropylene Check Valves
Banjo® Polypropylene Check Valves
Shop Now
Cepex Ball Check Valves
Cepex Ball Check Valves
Shop Now
Cepex Economy Wafer Check Valves
Cepex Economy Wafer Check Valves
Shop Now
Check Valves
Check Valves
Shop Now
Check Valves for Vacuum
Check Valves for Vacuum
Shop Now
Chemtrol® True Union Red Kynar® PVDF Check Valves
Chemtrol® True Union Red Kynar® PVDF Check Valves
Shop Now
Colonial Swing Check Valve
Colonial Swing Check Valve
Shop Now
Colonial Wafer Check Valves
Colonial Wafer Check Valves
Shop Now
CV Series Single Barb Check Valves
CV Series Single Barb Check Valves
Shop Now
GF  PVC Cone Check Valves Type 561 & 562
GF PVC Cone Check Valves Type 561 & 562
Shop Now
GF VC Y-Check Clear PVC Valves
GF VC Y-Check Clear PVC Valves
Shop Now
Hayward TC Series PVC True Union Ball Check Valves
Hayward TC Series PVC True Union Ball Check Valves
Shop Now
Hayward® CPVC True Union Ball Check Valves
Hayward® CPVC True Union Ball Check Valves
Shop Now
Hayward® Polypropylene True Union Ball Check Valves
Hayward® Polypropylene True Union Ball Check Valves
Shop Now
Hayward® Swing Check Valves
Hayward® Swing Check Valves
Shop Now
Hayward® WCV Series Wafer Check Valves
Hayward® WCV Series Wafer Check Valves
Shop Now
Hayward® YC Series True Union Y-Check Valves
Hayward® YC Series True Union Y-Check Valves
Shop Now
Hayward® YC Series Y-Check Valves
Hayward® YC Series Y-Check Valves
Shop Now
NIBCO® Chemtrol® TruUnion Ball Check Valves
NIBCO® Chemtrol® TruUnion Ball Check Valves
Shop Now
Plast-O-Matic CKD Compact Diaphragm Check Valves
Plast-O-Matic CKD Compact Diaphragm Check Valves
Shop Now
Plast-O-Matic CKM Diaphragm Check Valves
Plast-O-Matic CKM Diaphragm Check Valves
Shop Now
Praher K6 Wafer Check Valves
Praher K6 Wafer Check Valves
Shop Now
PVC & CPVC Foot Valve Screens
PVC & CPVC Foot Valve Screens
Shop Now
PVC Backwater Valves
PVC Backwater Valves
Shop Now
PVC Compact Foot Valve Screens
PVC Compact Foot Valve Screens
Shop Now
SMC 406 Series Check Valves
SMC 406 Series Check Valves
Shop Now
SMC 426 Series PVC Check Valves for Air or Liquid
SMC 426 Series PVC Check Valves for Air or Liquid
Shop Now
SMC 695 Series Mini Check Valves
SMC 695 Series Mini Check Valves
Shop Now
SMC Check Valves for Air or Liquid
SMC Check Valves for Air or Liquid
Shop Now
Spring Check Valves
Spring Check Valves
Shop Now
Sump Pump Swing Check Valve
Sump Pump Swing Check Valve
Shop Now
Super Speedfit® Acetal Check Valve
Super Speedfit® Acetal Check Valve
Shop Now
True Union Industrial Ball Check Valves
True Union Industrial Ball Check Valves
Shop Now
True Union Low Extractable PVC Ball Check Valves
True Union Low Extractable PVC Ball Check Valves
Shop Now
TrueSeal™ Check Valve
TrueSeal™ Check Valve
Shop Now

More Products Like This