No. 7300

Plastic Check Valves for Water Conditioning


This specialized line of plastic check valves has been designed for use with iron filters in the water conditioning industry, engineered for installation on Clack and Pentair control valves. We use a one-piece, NSF Celcon molded body and spring retainer. The plastic line comes standard with a Buna-S rubber poppet, an extremely durable compound for use with potable drinking water. All other internal components of stainless steel. Each valve is tested at very low air pressure for backflow prevention. All valves are 100% American-Made and built to last.


Used as specialty check valve for iron filters with Clack and Pentair control valves.

Flow Rate (Cv)
Size GPM
Clack 8
Pentair 8

Cv is flow (GPM) with a 1 psi differential pressure.

Material Specifications
Part Name Material
Body NSF Celcon M90
Stem 303 Stainless Steel
Poppet Buna-S Rubber
Spring 302 Stainless Steel
Cup Washer NSF Celcon M90
Locknut 18/8 Stainless Steel
Country of Origin Made in the USA

Operational Specifications
Max. Temperature 225°F
Working Pressure 200 psi
Cracking Pressure 1-2 lbs.

Pipe Size Part Number Overall Length Valve Diameter Valve Weight
Clack 7300-050-CLK 1.17" 1.15" 0.05 lb.
Pentair (Fleck) 7300-050-FLK 1.17" 1.15" 0.05 lb.


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