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)

Stock	Description	Catalog Pg.	Price
Item 88249	1/2" NPT PVC CKM Diaphragm Check Valve with EPDM Diaphragm 103.64/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	103.64/Each In Stock
Item 88250	3/4" NPT PVC CKM Diaphragm Check Valve with EPDM Diaphragm 124.37/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	124.37/Each Special Order
Item 88251	1" NPT PVC CKM Diaphragm Check Valve with EPDM Diaphragm 153.4/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	153.4/Each In Stock
Item 88258	1/2" NPT PVC CKM Diaphragm Check Valve with Viton™ Diaphragm 115.05/Each Out of Stock (On Order) Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	115.05/Each Out of Stock (On Order)
Item 88259	3/4" NPT PVC CKM Diaphragm Check Valve with Viton™ Diaphragm 132.66/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	132.66/Each In Stock
Item 88260	1" NPT PVC CKM Diaphragm Check Valve with Viton™ Diaphragm 160.64/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	160.64/Each In Stock
Item 88267	1/2" NPT Polypropylene CKM Diaphragm Check Valve with EPDM Diaphragm 163.75/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	163.75/Each Special Order
Item 88268	3/4" NPT Polypropylene CKM Diaphragm Check Valve with EPDM Diaphragm 190.71/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	190.71/Each Special Order
Item 88269	1" NPT Polypropylene CKM Diaphragm Check Valve with EPDM Diaphragm 220.75/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	220.75/Each In Stock
Item 88276	1/2" NPT Polypropylene CKM Diaphragm Check Valve with Viton™ Diaphragm 169.96/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	169.96/Each Special Order
Item 88277	3/4" NPT Polypropylene CKM Diaphragm Check Valve with Viton™ Diaphragm 200.03/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	200.03/Each In Stock
Item 88278	1" NPT Polypropylene CKM Diaphragm Check Valve with Viton™ Diaphragm 226.97/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	226.97/Each Special Order
Item 88283	1/2" NPT CPVC CKM Diaphragm Check Valve with EPDM Diaphragm 173.09/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	173.09/Each Special Order
Item 88284	3/4" NPT CPVC CKM Diaphragm Check Valve with EPDM Diaphragm 204.17/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	204.17/Each Special Order
Item 88285	1" NPT CPVC CKM Diaphragm Check Valve with EPDM Diaphragm 235.27/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	235.27/Each Special Order
Item 88290	1/2" NPT CPVC CKM Diaphragm Check Valve with Viton™ Diaphragm 182.4/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	182.4/Each Special Order
Item 88291	3/4" NPT CPVC CKM Diaphragm Check Valve with Viton™ Diaphragm 215.58/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	215.58/Each In Stock
Item 88292	1" NPT CPVC CKM Diaphragm Check Valve with Viton™ Diaphragm 246.66/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-469	246.66/Each Special Order

Plast-O-Matic CKM Diaphragm Check Valves

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