Plast-O-Matic CKM Diaphragm Check Valves

Series CKM Check Valves, normally closed in design, feature a patented diaphragm seal that will neither stick nor chatter and is automatic in action. The valves are not dependent upon gravity; therefore, they can be mounted in any position. Even in the absence of reverse flow or pressure, the diaphragm will automatically reposition itself to seal against the valve seat. This is achieved with or without the presence of reverse flow. The unique and patented diaphragm will seal in the same location every time, producing a more reliable and repetitive seal. The molded Series CKM models have only one moving part - the diaphragm. This provides both design simplicity and maximum operating dependability.

PVC, Corzan® CPVC, or glass-filled polypropylene
EPDM or Viton™ diaphragms
Female NPT
Dependable, repetitive, bubble-tight sealing
Union nut simplifies valve inspection/removal
Silent operation since no internal sliding or loose parts
If reverse pressure is present, it creates a tighter seal
Diaphragm begins to open at approximately 1 to 1.5 psi
Inlet pressure rating @ 77°F: 150 psi (except PP with Viton™ which is 100 psi)
Maximum temp.: 140°F (PVC) & 180°F (PP & CPVC)

Item #	Description	Catalog Pg.	Price
Item 88249	1/2" NPT PVC CKM Diaphragm Check Valve with EPDM Diaphragm 122.35/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	122.35/Each In Stock
Item 88250	3/4" NPT PVC CKM Diaphragm Check Valve with EPDM Diaphragm 146.59/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	146.59/Each In Stock
Item 88251	1" NPT PVC CKM Diaphragm Check Valve with EPDM Diaphragm 180.75/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	180.75/Each Special Order
Item 88258	1/2" NPT PVC CKM Diaphragm Check Valve with Viton™ Diaphragm 135.57/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	135.57/Each In Stock
Item 88259	3/4" NPT PVC CKM Diaphragm Check Valve with Viton™ Diaphragm 156.51/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	156.51/Each In Stock
Item 88260	1" NPT PVC CKM Diaphragm Check Valve with Viton™ Diaphragm 189.58/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	189.58/Each In Stock
Item 88267	1/2" NPT Polypropylene CKM Diaphragm Check Valve with EPDM Diaphragm 187.37/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	187.37/Each Special Order
Item 88268	3/4" NPT Polypropylene CKM Diaphragm Check Valve with EPDM Diaphragm 220.43/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	220.43/Each Special Order
Item 88269	1" NPT Polypropylene CKM Diaphragm Check Valve with EPDM Diaphragm 252.4/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	252.4/Each In Stock
Item 88276	1/2" NPT Polypropylene CKM Diaphragm Check Valve with Viton™ Diaphragm 195.09/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	195.09/Each Special Order
Item 88277	3/4" NPT Polypropylene CKM Diaphragm Check Valve with Viton™ Diaphragm 231.46/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	231.46/Each In Stock
Item 88278	1" NPT Polypropylene CKM Diaphragm Check Valve with Viton™ Diaphragm 259.01/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	259.01/Each Special Order
Item 88283	1/2" NPT CPVC CKM Diaphragm Check Valve with EPDM Diaphragm 203.91/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	203.91/Each Special Order
Item 88284	3/4" NPT CPVC CKM Diaphragm Check Valve with EPDM Diaphragm 240.27/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	240.27/Each Special Order
Item 88285	1" NPT CPVC CKM Diaphragm Check Valve with EPDM Diaphragm 276.64/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	276.64/Each Special Order
Item 88290	1/2" NPT CPVC CKM Diaphragm Check Valve with Viton™ Diaphragm 214.92/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	214.92/Each Special Order
Item 88291	3/4" NPT CPVC CKM Diaphragm Check Valve with Viton™ Diaphragm 253.5/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	253.5/Each In Stock
Item 88292	1" NPT CPVC CKM Diaphragm Check Valve with Viton™ Diaphragm 289.87/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	289.87/Each Special Order

Plast-O-Matic CKM Diaphragm Check Valves

More in This Category