Nibco® Chemtrol® Chem-Pure® Natural Polypropylene Threaded True Union Ball Check Valves

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
  • FKM or 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 # Description Catalog Pg. Price Add to Cart
1/2" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with FKM O-rings
Item 18442
222.27/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
222.27/Each
3/4" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with FKM O-rings
Item 18443
298.54/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
298.54/Each
1" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with FKM O-rings
Item 18444
387.89/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
387.89/Each
1-1/4" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with FKM O-rings
Item 18445
570/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
570/Each
1-1/2" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with FKM O-rings
Item 18446
570/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
570/Each
2" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with FKM O-rings
Item 18447
983.69/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
983.69/Each
1/2" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with EPDM O-rings
Item 18448
222.11/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
222.11/Each
3/4" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with EPDM O-rings
Item 18449
298.43/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
298.43/Each
1" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with EPDM O-rings
Item 18450
388.41/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
388.41/Each
1-1/4" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with EPDM O-rings
Item 18451
569.85/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
569.85/Each
1-1/2" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with EPDM O-rings
Item 18452
569.85/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
569.85/Each
2" Threaded Natural Polypropylene Nibco® Chemtrol® Chem-Pure® True Union Ball Check Valve with EPDM O-rings
Item 18454
982.67/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-503
982.67/Each