Complete air-intake check valve assembly for any CSI Reactr or Hydroxr manifold.  Also used on new-style WaterSoft Provectr A/P Tank manifolds.

• 1/8" MPT connection simply screws into any Reactr or Hydroxr manifold
• Direct replacement for the obsolete check valve p/n 65555X215
• Can replace chemical injection check valve 66555X102 on older Oxyclean systems

This check valve can be rebuilt & reused simply by replacing the internal duck bill, p/n 20009X022