1-1/4" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with EPDM O-rings

Item 18451

Buy in Quantity & Save!

5% off at 2+530.5275/Each
10% off at 4+502.605/Each
15% off at 12+474.6825/Each


The Chemtrol® ball check valves stop media flow in one direction while allowing flow in the opposite direction with minimum turbulence and chatter while maintaining pump prime. The original Chemtrol® True Union design enables the valve and operational components to be conveniently lifted from the piping system for repair or replacement. Chemtrol® Chem-Pure® polypropylene exhibits an extremely low content of metals, organic compounds, and free ions, and no pigments or other adulterants (natural) are added to the plastic resin. Chem-Pure® natural polypropylene demonstrates excellent chemical resistance properties, including aqueous solutions of acids, alkalis and salts, and several organic solvents, making it ideal for use with deionized water systems, clean chemical processes, pharmaceutical operations, and food processing.

  • Natural polypropylene valve body
  • EPDM O-ring
  • FNPT threaded end connections
  • Pressure rating: 150 psi @ 73°F water non-shock
  • Maximum service temperature: 180°F
  • Do not use or test with compressed air or other gases
  • ASTM D4101 material
  • Non-cancellable/Non-returnable

Item Information

Item Number: 18451
Catalog Page Number: P-486
Manufacturer: Nibco®
Manufacturer Part #: MN818AB
Country of Origin: USA

Tech Specs

Material: Polypropylene
Connection: FNPT x FNPT
Size: 1-1/4"
Seal: EPDM
Weight: 1.69 lbs

More in This Group

Product Assistance

905 907
Send Message