Plast-O-Matic CKD Compact Diaphragm Check Valves

The "CKD" Check Valves utilize a flexible elastomer disc for their sealing action. This sensitive disc offers very low-pressure sealing. In addition, the disc requires extremely minimal pressure to move to the open position. Since these sealing discs are self-centering, they seal in an identical position every time, allowing more reliable sealing and prolonged life. The elastomer disc is kept clean by the constant flushing action of the inlet flow, keeping the sealing area free of particles that otherwise might cause leakage. When the inlet pressure is sensed the sealing disc is pushed off the valve seat opening the valve. In this position, the sealing disc is supported internally allowing the valve to operate under high flow conditions with relatively no force or stress on the disc.

  • PVC or natural polypropylene
  • Viton™ or EPDM disc
  • Designed to prevent the reverse flow of highly corrosive & ultra-pure liquids
  • Female NPT
  • Minimum back pressure required to close: 1/2 psi
  • Pressure rating @ 75°F: 140 psi (PVC) & 125 psi (PP)
  • Maximum temperature: 140°F (PVC) & 180°F (PP)
Stock Description Catalog Pg. Price
1/2" NPT Polypropylene CKD Compact Diaphragm Check Valve with EPDM Disc
Item 88266
247.42/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-469
247.42/Each
1/4" NPT Polypropylene CKD Compact Diaphragm Check Valve with EPDM Disc
Item 88265
219.23/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-469
219.23/Each
1/2" NPT Polypropylene CKD Compact Diaphragm Check Valve with Viton™ Disc
Item 88275
259.68/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-469
259.68/Each
1/4" NPT Polypropylene CKD Compact Diaphragm Check Valve with Viton™ Disc
Item 88274
231.49/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-469
231.49/Each
1/2" NPT PVC CKD Compact Diaphragm Check Valve with EPDM Disc
Item 88240
203.33/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-469
203.33/Each
1/4" NPT PVC CKD Compact Diaphragm Check Valve with EPDM Disc
Item 88239
178.84/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-469
178.84/Each
1/2" NPT PVC CKD Compact Diaphragm Check Valve with Viton™ Disc
Item 88257
210.68/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-469
210.68/Each
1/4" NPT PVC CKD Compact Diaphragm Check Valve with Viton™ Disc
Item 88256
188.64/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-469
188.64/Each

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