Pump Plunger Cup for Plastic Pump-Up Sprayers NA2254 Containers & Measuring Cups Introduce water or a cleaning

Introduce water or a cleaning solution and the soot turns to a smear that is driven into the surface — and on a painted wall or a ceiling that is permanent

We have not been able to settle it from a primary source

When moisture is present in a material

This is the high-limit switch — the one that cuts the machine out when solution temperature reaches a point it should never reach in normal use

Pump Plunger Cup for Plastic Pump-Up Sprayers NA2254 Containers & Measuring Cups Introduce water or a cleaningProduct Overview The pump plunger cup for plastic pump up sprayers. It is the seal on the plunger that pushes air into the tank on each stroke. Wear, and the Greasing Nobody Does The plunger cup is a wearing part by design, and the single biggest thing that shortens its life is running it dry. Hydro Force's own AS16A documentation calls for the piston cup to be greased periodically, and supplies grease in the service kit for exactly that reason. A cup