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Series CKM Self-Closing Thermoplastic Check Valves...

Patented Diaphragm Design Assures Dependable, Repetitive, Bubble-Tight Sealing... and They Can Be Mounted in Any Position!

Click here for a video comparison of ball checks to our patented diaphragm check!

CKM Diaphragm Check Valves

Features/Benefits:

Patented Design: Self-sealing - they are not dependent on gravity, mounting position or reverse flow, a significant improvement over ball check valves.
Silent Operation: No internal sliding or loose parts to slam or vibrate, chattering is eliminated!
Dependability: Leak-free sealing protects against the potential hazards created by reverse flow of corrosive liquids such as acids, caustics and chlorine solutions.
Repetitive Long Term Sealing: Diaphragm automatically positions itself against seat in the identical location. Superior to ball check valves which often leak at lower pressures.
Convenience: Union nut on Series CKM simplifies valve inspection/removal with minimum piping breakdown.
Minimal Cracking Pressure: Diaphragm begins to open at approximately 1.0 to 1.5 PSI.
Cost Efficient: Designed to improve system performance and competitively priced.
Great Selection: Molded valves available in Geon^® PVC, Kynar^® PVDF, glass-filled Polypropylene, and now Corzan^® CPVC. Series CK available in PTFE.

This simple animation shows the valve starting in the normally closed position, opening, and then closing bubble tight with zero inlet pressure. Flow is from left to right.

Specifications:

CKM cut-away

Dimensions & Ordering Information:

CK & CKM Dimension Drawing

PVC, CPVC, PP & PVDF body valve is Series CKM...
Series CKM Pipe Size (NPT)	A		B		C		Model Number
Series CKM Pipe Size (NPT)	IN.	mm	IN.	mm	IN.	mm	Model Number
1/2"	3.8	97	1.3	33	2.4	62	CKM050V-PV
3/4"	4.1	105	1.6	39	2.8	72	CKM075V-PV
1"	4.7	120	1.9	48	2.8	72	CKM100V-PV
CKM(series) 050(size) V(seal material) - PV(body material) Part numbers shown are Viton seals with PVC bodies. • For EPDM seals, change "V" to "EP" (CKM050EP-PV) • For Kynar PVDF body, change "-PV" to "-PF" (CKM050V-PF) • For Polypropylene body, change "-PV" to "-PP" (CKM050V-PP) • For Corzan CPVC body, change "-PV" to "-CP" (CKM050V-CP) Standard connections are threaded. For socket connection, add "S" after seal material (CKM050VS-PV) For spigot or other connection types, consult factory.

PTFE body valve is Series CK...
Series CK Pipe Size (NPT)	A		B		C		Model Number
Series CK Pipe Size (NPT)	IN.	mm	IN.	mm	IN.	mm	Model Number
3/4"	3.6	92	1.9	48	3.0	76	CK075V-TF
1"	4.3	110	1.9	48	3.0	76	CK100V-TF
CK(series) 050(size) V(seal material) - TF(body material) Part numbers shown have Viton seals. • For EPDM seals, change "V" to "EP" (CK050EP-TF) Threaded connections only.

CAD Drawings:

CKM050 (1/2") CKM075 (3/4") CKM100 (1")

Flow vs. Pressure Drop Performance:

ckm - graph

Catalog Page:

For specifications and catalog page in .PDF format, please click here.

Installation:

For detailed installation instructions, please click here.

Product News:

April 2004: Series CKM is offered in Corzan CPVC. Corzan CPVC (chlorinated polyvinylchloride) offers many of the same advantages of grade 1/type 1 PVC, with additional service temperature range to 180ºF. Corzan is a well known brand of CPVC resin manufactured by Noveon, Inc. Series CKM in Corzan CPVC is available for threaded or socket installation, with Viton or EPDM diaphragm.

For complete information request: Catalog CKM

Plast-O-Matic Valves, Inc.
1384 Pompton Avenue
Cedar Grove, NJ 07009 USA
Voice: (973) 256-3000
Fax: (973) 256-4745

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Kynar® is a registered trademark of Arkema.,
Corzan™ is a trademark of Noveon. Geon® is a registered trademark of the Geon Company.
FAIL-DRY® is a registered trademark of Plast-O-Matic Valves, Inc.