U.S. Plastic Corporation Datasheets for Check Valves

Check valves are self-activating safety valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. They are classified as one-way directional valves. 
Check Valves: Learn more

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Product Name Notes
Plast-O-Matic CKS Diaphragm Check Valves -- 88293 1 1/2"cks cpvc diaphragm chk vlv-viton
Plast-O-Matic CKS Diaphragm Check Valves -- 88286 1 1/2"cks cpvc diaphragm ck valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88270 1 1/2"cks pp diaphragm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88279 1 1/2"cks pp diaphragm check vlv-viton
Plast-O-Matic CKS Diaphragm Check Valves -- 88252 1 1/2"cks pvc diaphrgm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88261 1 1/2"cks pvc diaphrgm chk valve-viton
PVC Foot Check Valves -- 19421
PVC Foot Check Valves -- 19422
PVC Foot Check Valves -- 19423
PVC Foot Check Valves -- 19424
PVC Foot Check Valves -- 19425
PVC Foot Check Valves -- 19426
PVC Foot Check Valves -- 19437
150 psi at 73 degrees F water-non shock. For pump suction service. Ball Type Check. All plastic, removable screen. VitonĀ® ball seat and O-ring, NSF listed. Equally effective in checking...
Hayward WCV Series Wafer Check Valves -- 20789 2" Hayward WCV Series Wafer Check Valve w/EPDM Seals has an opening pressure of 1 PSI and a sealing pressure of 3 PSI. It is 1.80" wide and 2.25" overall...
Plast-O-Matic CKS Diaphragm Check Valves -- 88287 2"cks cpvc diaphragm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88294 2"cks cpvc diaphragm check valve-viton
Plast-O-Matic CKS Diaphragm Check Valves -- 88271 2"cks pp diaphragm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88280 2"cks pp diaphragm check valve-viton
Plast-O-Matic CKS Diaphragm Check Valves -- 88253 2"cks pvc diaphrgm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88262 2"cks pvc diaphrgm chk valve-viton
Hayward WCV Series Wafer Check Valves -- 20790 2-1/2" Hayward WCV Series Wafer Check Valve w/EPDM Seals has an opening pressure of 1 PSI and a sealing pressure of 3 PSI. It is 2.30" wide and 6.00" overall...
Hayward WCV Series Wafer Check Valves -- 20791 3" Hayward WCV Series Wafer Check Valve w/EPDM Seals has an opening pressure of 1 PSI and a sealing pressure of 3 PSI. It is 2.40" wide and 6.50" overall...
Plast-O-Matic CKS Diaphragm Check Valves -- 88288 3"cks cpvc diaphragm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88295 3"cks cpvc diaphragm check valve-viton
Plast-O-Matic CKS Diaphragm Check Valves -- 88272 3"cks pp diaphragm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88281 3"cks pp diaphragm check valve-viton
Plast-O-Matic CKS Diaphragm Check Valves -- 88254 3"cks pvc diaphrgm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88263 3"cks pvc diaphrgm chk valve-viton
Hayward WCV Series Wafer Check Valves -- 20792 4" Hayward WCV Series Wafer Check Valve w/EPDM Seals has an opening pressure of 1 PSI and a sealing pressure of 3 PSI. It is 2.90" wide and 9.00" overall...
Plast-O-Matic CKS Diaphragm Check Valves -- 88289 4"cks cpvc diaphragm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88296 4"cks cpvc diaphragm check valve-viton
Plast-O-Matic CKS Diaphragm Check Valves -- 88273 4"cks pp diaphragm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88282 4"cks pp diaphragm check valve-viton
Plast-O-Matic CKS Diaphragm Check Valves -- 88255 4"cks pvc diaphrgm check valve-epdm
Plast-O-Matic CKS Diaphragm Check Valves -- 88264 4"cks pvc diaphrgm chk valve-viton
Hayward WCV Series Wafer Check Valves -- 20793 6" Hayward WCV Series Wafer Check Valve w/EPDM Seals has an opening pressure of 1 PSI and a sealing pressure of 3 PSI. It is 3.00" wide and 11.13" overall...
Hayward WCV Series Wafer Check Valves -- 20794 8" Hayward WCV Series Wafer Check Valve w/EPDM Seals has an opening pressure of 1 PSI and a sealing pressure of 3 PSI. It is 4.93" wide and 13.38" overall...
Cepex Ball Check Valves -- 20351
Cepex Ball Check Valves -- 20370
Cepex Ball Check Valves -- 20434
Cepex Ball Check Valves -- 20437
Cepex PVC Full Port (*) True Union Ball Check Valves with Foot Valve Screens with either EPDM or FKM O-Rings. 1/2" - 2" rated @ 240 psi and supplied with...
Cepex Ball Check Valves -- 20335
Cepex Ball Check Valves -- 20336
Cepex Ball Check Valves -- 20338
Cepex Ball Check Valves -- 20339
Cepex Ball Check Valves -- 20340
Cepex Ball Check Valves -- 20341
Cepex Ball Check Valves -- 20342
Cepex Ball Check Valves -- 20350
Cepex Ball Check Valves -- 20352
Cepex Ball Check Valves -- 20360
Cepex Ball Check Valves -- 20380
Cepex Ball Check Valves -- 20390
Cepex Ball Check Valves -- 20400
Cepex Ball Check Valves -- 20420
Cepex Ball Check Valves -- 20430
Cepex Ball Check Valves -- 20431
Cepex Ball Check Valves -- 20432
Cepex Ball Check Valves -- 20433
Cepex Ball Check Valves -- 20435
Cepex Ball Check Valves -- 20436
Cepex PVC True Union Ball Check Valves with Foot Valve Screens with either EPDM or FKM O-Rings. 1/2" - 2" rated @ 240 psi and supplied with Socket/Threaded Combo End...
Cepex Economy Wafer Check Valves -- 20438
Cepex Economy Wafer Check Valves -- 20439
Cepex Economy Wafer Check Valves -- 20440
Cepex PVC Wafer Check Valve with EPDM. Sizes 4" to 8" rated at 150 psi @ 73F. Excellent flow characteristics. Lightweight. Can be operated in vertical or horizontal position. Complies...
Asahi PVDF Check Valves -- 17277
Asahi PVDF Check Valves -- 17278
Asahi PVDF Check Valves -- 17279
Asahi PVDF Check Valves -- 17280
Asahi PVDF Check Valves -- 17281
Asahi PVDF Check Valves -- 17282
Asahi PVDF Check Valves -- 17283
Asahi PVDF Check Valves -- 17284
Check valves are used to prevent the reversal of flow in a line. When open and under flow pressure, the checking mechanism will move freely in the media, offering very...
Plast-O-Matic CKM Diaphragm Check Valves -- 88267
Plast-O-Matic CKM Diaphragm Check Valves -- 88276
Diameter: 1.3". Length: 3.8". Working psi @ 77F: 100. Maximum Temperature: 180F. Note: Polypropylene is 20% glass filled.
Plast-O-Matic CKM Diaphragm Check Valves -- 88249
Plast-O-Matic CKM Diaphragm Check Valves -- 88258
Diameter: 1.3". Length: 3.8". Working psi @ 77F: 150 Inlet/100 Back. Maximum Temperature: 140F.
Plast-O-Matic CKM Diaphragm Check Valves -- 88283
Plast-O-Matic CKM Diaphragm Check Valves -- 88290
Diameter: 1.3". Length: 3.8". Working psi @ 77F: 150 inlet/100 back. Maximum Temperature: 180F.
Plast-O-Matic CKM Diaphragm Check Valves -- 88268
Plast-O-Matic CKM Diaphragm Check Valves -- 88277
Diameter: 1.6". Length: 4.1". Working psi @ 77F: 100. Maximum Temperature: 180F. Note: Polypropylene is 20% glass filled.
Plast-O-Matic CKM Diaphragm Check Valves -- 88250
Plast-O-Matic CKM Diaphragm Check Valves -- 88259
Diameter: 1.6". Length: 4.1". Working psi @ 77F: 150 Inlet/100 Back. Maximum Temperature: 140F.
Plast-O-Matic CKM Diaphragm Check Valves -- 88284
Plast-O-Matic CKM Diaphragm Check Valves -- 88291
Diameter: 1.6". Length: 4.1". Working psi @ 77F: 150 Inlet/100 Back. Maximum Temperature: 180F.
Plast-O-Matic CKM Diaphragm Check Valves -- 88269
Plast-O-Matic CKM Diaphragm Check Valves -- 88278
Diameter: 1.9". Length: 4.7". Working psi @ 77F: 100. Maximum Temperature: 180F. Note: Polypropylene is 20% glass filled.
Plast-O-Matic CKM Diaphragm Check Valves -- 88251
Plast-O-Matic CKM Diaphragm Check Valves -- 88260
Diameter: 1.9". Length: 4.7". Working psi @ 77F: 150 Inlet/100 Back. Maximum Temperature: 140F.
Plast-O-Matic CKM Diaphragm Check Valves -- 88285
Plast-O-Matic CKM Diaphragm Check Valves -- 88292
Diameter: 1.9". Length: 4.7". Working psi @ 77F: 150 Inlet/100 Back. Maximum Temperature: 180F.
PVC and PP Foot Operated Valves -- 21090
PVC and PP Foot Operated Valves -- 21091
PVC and PP Foot Operated Valves -- 21092
PVC and PP Foot Operated Valves -- 21093
PVC and PP Foot Operated Valves -- 21094
PVC and PP Foot Operated Valves -- 21095
Foot control valve for spray rinse tanks. Dispersement valve for filling containers. Quick acting valve for industrial air lines. Valves can be adapted for use on industrial rinse showers. All...
GF PVC Cone Check Valves Type 561 & 562 -- 20766
GF PVC Cone Check Valves Type 561 & 562 -- 20767
GF PVC Cone Check Valves Type 561 & 562 -- 20768
GF PVC Cone Check Valves Type 561 & 562 -- 20769
GF PVC Cone Check Valves Type 561 & 562 -- 20770
GF PVC Cone Check Valves Type 561 & 562 -- 20771
GF PVC Cone Check Valves Type 561 & 562 -- 20772
GF PVC Cone Check Valves Type 561 & 562 -- 20804
GF PVC Cone Check Valves Type 561 & 562 -- 20805
GF PVC Cone Check Valves Type 561 & 562 -- 20806
GF PVC Cone Check Valves Type 561 & 562 -- 20807
GF PVC Cone Check Valves Type 561 & 562 -- 20808
GF PVC Cone Check Valves Type 561 & 562 -- 20809
GF PVC Cone Check Valves Type 561 & 562 -- 20810
GF PVC Cone Check Valves Type 561 & 562 -- 20811
GF PVC Cone Check Valves Type 561 & 562 -- 20812
GF PVC Cone Check Valves Type 561 & 562 -- 20813
GF PVC Cone Check Valves Type 561 & 562 -- 20814
GF PVC Cone Check Valves Type 561 & 562 -- 20815
GF PVC Cone Check Valves Type 561 & 562 -- 20816
GF PVC Cone Check Valves Type 561 & 562 -- 20817
GF 561 & 562 valves feature a unique check cone element design that optimizes flow geometry and minimizes flow resistance and pressure loss. The valve closes when vertically mounted with...
Hayward Swing Check Valves -- 20570
Hayward Swing Check Valves -- 20575
Hayward Swing Check Valves -- 20576
Hayward Swing Check Valves -- 20577
Hayward Swing Check Valves -- 20578
Hayward Swing Check Valves -- 20579
Hayward Swing Check Valves -- 20580
Hayward Swing Check Valves -- 20581
Hayward PVC swing check valves have up to twice the temperature/pressure rating of other plastic swing check valves, and can replace metal valves in many applications. Compare the temperature/pressure rating...
Hayward PVC True Union Ball Check Valves -- 18501
Hayward PVC True Union Ball Check Valves -- 18502
Hayward PVC True Union Ball Check Valves -- 18503
Hayward PVC True Union Ball Check Valves -- 18504
Hayward PVC True Union Ball Check Valves -- 18505
Hayward PVC True Union Ball Check Valves -- 18506
Hayward PVC True Union Ball Check Valves -- 18507
Hayward PVC True Union Ball Check Valves -- 18508
Hayward PVC True Union Ball Check Valves -- 18509
Hayward PVC True Union Ball Check Valves -- 18510
Hayward PVC True Union Ball Check Valves -- 18511
Hayward PVC True Union Ball Check Valves -- 18512
Hayward PVC True Union Ball Check Valves -- 18513
Hayward PVC True Union Ball Check Valves -- 18514
Hayward true check ball check valves with FPM seals, NSF listed material and 150 PSI at 70 F., prevent reversal of flow in piping systems. They are ideal where backflow...
Hayward CPVC True Union Ball Check Valves -- 18515
Hayward CPVC True Union Ball Check Valves -- 18516
Hayward CPVC True Union Ball Check Valves -- 18517
Hayward CPVC True Union Ball Check Valves -- 18518
Hayward CPVC True Union Ball Check Valves -- 18519
Hayward CPVC True Union Ball Check Valves -- 18520
Hayward CPVC True Union Ball Check Valves -- 18521
Hayward CPVC True Union Ball Check Valves -- 18522
Hayward CPVC True Union Ball Check Valves -- 18523
Hayward CPVC True Union Ball Check Valves -- 18524
Hayward Polypropylene True Union Ball Check Valves -- 18321
Hayward Polypropylene True Union Ball Check Valves -- 18322
Hayward Polypropylene True Union Ball Check Valves -- 18323
Hayward Polypropylene True Union Ball Check Valves -- 18324
Hayward Polypropylene True Union Ball Check Valves -- 18325
Hayward true check ball check valves with viton seals, NSF listed material and 150 PSI at 70 degrees F., prevent reversal of flow in piping systems. They are ideal where...
Polypropylene Check Valve Series 694 -- 22210
Polypropylene Check Valve Series 694 -- 22211
Polypropylene Check Valve Series 694 -- 22231
Polypropylene Check Valve Series 694 -- 22232
Maximum Operating Pressure 125 psi. Maximum Operating Temperature 140F. Seat Area Open Diameter .438. The 694 Series Check Valve covers a wide range of air and fluid applications. The 694...
Nibco Chemtrol True Union Ball Check Valves -- 18271
Nibco Chemtrol True Union Ball Check Valves -- 18272
Nibco Chemtrol True Union Ball Check Valves -- 18273
Nibco Chemtrol True Union Ball Check Valves -- 18275
Nibco Chemtrol True Union Ball Check Valves -- 18276
Nibco Chemtrol True Union Ball Check Valves -- 18277
Nibco Chemtrol True Union Ball Check Valves -- 18287
Nibco Chemtrol True Union Ball Check Valves -- 18291
Nibco Chemtrol True Union Ball Check Valves -- 18292
Nibco Chemtrol True Union Ball Check Valves -- 18293
Nibco Chemtrol True Union Ball Check Valves -- 18294
Nibco Chemtrol True Union Ball Check Valves -- 18295
Nibco Chemtrol True Union Ball Check Valves -- 18296
Nibco Chemtrol True Union Ball Check Valves -- 18297
Nibco Chemtrol True Union Ball Check Valves -- 18307
PVC and CPVC Ball Check Valves -- 18271
PVC and CPVC Ball Check Valves -- 18272
PVC and CPVC Ball Check Valves -- 18273
PVC and CPVC Ball Check Valves -- 18275
PVC and CPVC Ball Check Valves -- 18276
PVC and CPVC Ball Check Valves -- 18277
PVC and CPVC Ball Check Valves -- 18287
PVC and CPVC Ball Check Valves -- 18291
PVC and CPVC Ball Check Valves -- 18292
PVC and CPVC Ball Check Valves -- 18293
PVC and CPVC Ball Check Valves -- 18294
PVC and CPVC Ball Check Valves -- 18295
PVC and CPVC Ball Check Valves -- 18296
PVC and CPVC Ball Check Valves -- 18297
PVC and CPVC Ball Check Valves -- 18307
Not spring loaded but the design insures free movement of the ball. Ball supported by a system of guide ribs to give full flow with minimum turbulence and chatter. Union...
Plast-O-Matic CKD Compact Diaphragm Check Valves -- 88265
Plast-O-Matic CKD Compact Diaphragm Check Valves -- 88274
Orifice Size: 3/16". Diameter: 1-1/8". Length: 2-1/16". Cv Factor: 0.50. Maximum psi @ 75F: 125. Maximum Temperature rating: 180F.
Plast-O-Matic CKD Compact Diaphragm Check Valves -- 88239
Plast-O-Matic CKD Compact Diaphragm Check Valves -- 88256
Orifice Size: 3/16". Diameter: 1-1/8". Length: 2-1/16". Cv Factor: 0.50. Maximum psi @ 75F: 140. Maximum Temperature rating: 140F.
Plast-O-Matic CKD Compact Diaphragm Check Valves -- 88266
Plast-O-Matic CKD Compact Diaphragm Check Valves -- 88275
Orifice Size: 5/16". Diameter: 1-1/2". Length: 2-5/8". Cv Factor: 1. Maximum psi @ 75F: 125. Maximum Temperature rating: 180F.
Plast-O-Matic CKD Compact Diaphragm Check Valves -- 88240
Plast-O-Matic CKD Compact Diaphragm Check Valves -- 88257
Orifice Size: 5/16". Diameter: 1-1/2". Length: 2-5/8". Cv Factor: 1. Maximum psi @ 75F: 140. Maximum Temperature rating: 140F.
Check Valves -- 64046
Check Valves -- 64048
Check Valves -- 64100
Polypropylene and Kynar housing with Viton diaphragm. Will work with vacuum between 2 and 29 in. Hg. and pressures from 1 psi up to 150psi. .5 lb. cracking pressure on...
Check Valves -- 64047
Check Valves -- 64049
Check Valves -- 64108
Check Valves -- 64174
Check Valves -- 64175
Polypropylene and Kynar housing with Viton diaphragm. Will work with vacuum between 2 and 29 in. Hg. and pressures from 1 psi up to 150psi.
Praher K6 Wafer Check Valves -- 21325
Praher K6 Wafer Check Valves -- 21327
Praher K6 Wafer Check Valves -- 21328
Praher K6 Wafer Check Valves -- 21329
Praher K6 Wafer Check Valves -- 21330
Praher K6 Wafer Check Valves -- 21332
Praher K6 thermoplastic wafer check valves are available in sizes 2" though 8" with maximum operating pressure of 150 psi at 72 F, non-shock. The valve does not require a...
Registered PVC Y-Style Check Valve -- 22175
Registered PVC Y-Style Check Valve -- 22176
Registered PVC Y-Style Check Valve -- 22177
Registered PVC Y-Style Check Valve -- 22178
Registered PVC Y-Style Check Valve -- 22179
Registered PVC Y-Style Check Valve -- 22180
Registered PVC Y-Style Check Valve -- 22181
Prevent reversal of flow. Similar in function to a ball check valve. Minimum of 2 lb. of positive back pressure seats the disc o-ring onto a precision machined seat. Hex...
Check Valves for Vacuum -- 64001
Check Valves for Vacuum -- 64004
Prevents back-flow in flexible tubing. Operates in any position, but works best at 10" to 28" Hg vacuum. Made of polyethylene. #64001 has polyethylene disk; #64004 has neoprene disk. Not...
Mini Check Valve -- 57171
Mini Check Valve -- 57172
Mini Check Valve -- 57173
Mini Check Valve -- 57174
Mini Check Valve -- 57175
Mini Check Valve -- 57176
The 695 series is a general purpose check valve that operates in any position, horizontal or vertical. A great low-resistance, high flow check valve where space is limited. Available in...
Banjo Polypropylene Check Valves -- 30976
Banjo Polypropylene Check Valves -- 30977
These polypropylene check valves have a one piece construction. Valves are rated to 150 PSI maximum. They have a 1-2 PSI spring. Polypropylene is glass filled and the gasket materials...
2 1/2" pvc swing check vlv gray skt -- 18267 This 2-1/2" swing check valve in the open position allows for unobstructed continuous flow with minimal head loss. Swing check valves are designed for horizontal installation. All check valves must...
3" pvc swing check vlv gray skt -- 18268 This 3" swing check valve in the open position allows for unobstructed continuous flow with minimal head loss. Swing check valves are designed for horizontal installation. All check valves must...
4" pvc swing check vlv gray skt -- 18269 This 4" swing check valve in the open position allows for unobstructed continuous flow with minimal head loss. Swing check valves are designed for horizontal installation. All check valves must...
brs ck 410 1/4"mnptx1/4"mnpt epdm 1psi -- 22395 This valve has a 1/4"MNPT inlet and a 1/4"MNPT outlet. Valve body is .56" diameter and 1.50" long. 1 PSI cracking pressure.
NIBCO Chemtrol TruUnion Ball Check Valves -- 19470 Use this with a 18294 or 18295 PVC Check Valve to convert to a foot valve. Convert to a foot valve by replacing inlet end connection on valve with this...
Hayward True Union Y - Check Valves -- 22201
Hayward True Union Y - Check Valves -- 22202
Hayward True Union Y - Check Valves -- 22204
Hayward True Union Y - Check Valves -- 22245
Hayward True Union Y - Check Valves -- 22253
Hayward True Union Y - Check Valves -- 22310
Hayward True Union Y - Check Valves -- 22320
Hayward True Union Y - Check Valves -- 22330
Hayward True Union Y - Check Valves -- 22334
Hayward True Union Y - Check Valves -- 22335
Hayward True Union Y - Check Valves -- 22336
Hayward True Union Y - Check Valves -- 22337
Hayward True Union Y - Check Valves -- 22339
Hayward True Union Y - Check Valves -- 22341
Hayward True Union Y - Check Valves -- 22342
Hayward True Union Y - Check Valves -- 22343
Hayward True Union Y - Check Valves -- 22344
Hayward True Union Y - Check Valves -- 22345
Valves are very easy to maintain by allowing for easy removal from a piping system without breaking down the piping connections. Just unscrew the assembly nuts and lift the valve...

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