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. Viton® 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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