Colmonoy® Improves Life of Pump Parts

Hardfaced Coatings Withstand Corrosive Fluids like Salt Water, Gasoline, Acid

Pump parts hardfaced with Colmonoy® alloys last 4 to 8 times longer than uncoated parts in oil producing, refining and chemical processing equipment.

Long life is achieved despite contact with such corrosive fluids as salt water, gasoline and hydrofluoric acid. Any part exposed in service to corrosive atmospheres or fluids is a natural application for Colmonoy®.

New parts should be given a hardfaced Colmonoy® protective coating. Protected parts can also be renewed or repaired by the SprayweldTM process after extended periods of service thus avoiding the costly purchase of new units.

Pump Parts can be coated with:

  • Colmonoy® 4, 5, 6, 62, 64, 69, 72, 75, 42, 57, 88, 98, 705, 7602-20M
  • Wallex® 6, 40, 50, 50HV, 55

Achieve longer life for your pump part




Fracturing Pump Plunger using Colmonoy® 88

Colmonoy 62 sprayed via Torch Fuse on a Pump Plunger

Colmonoy® 62 sprayed via Torch Fuse on a Pump Plunger



Pump plunger sprayed with Colmonoy® 5


Pump sleeves - Wallex™ 50



Colmonoy 62SA sprayed by Spraywelder™ System to Down Hole Pump Plunger



Colmonoy 88 HVOF sprayed to Pump Sleeve


FUSING the Colmonoy alloy coating to a pump plunger

From a 1960's Alloy News
FUSING the Colmonoy alloy coating to a pump plunger. Plunger has been previously machined undersize, grit blasted and Spraywelded with 0.045 in. coat of Colmonoy alloy in powder form. The coating is fused to the base metal using an oxy-acetylene torch flame as shown. The plunger is then finish ground.


TYPICAL PUMP PARTS protected with Colmonoy hard-facing alloys

From a 1960's Alloy News
TYPICAL PUMP PARTS protected with Colmonoy hard-facing alloys for long service in oil producing and refining equipment. Pump plunger at top is shown fallowing 22 months continuous salt water service in Oklahoma. Packing maintenance was practically eliminated during this period. Previous unprotected plunger normally lasted 3 to 4 months and required almost daily packing gland maintenance. Dubbs gasoline pump rod (center) is shown after running 24 hours a· day for two years. Uncoated rods had a service life of 90 days and required /frequent repacking. Coated plunger following continuous refinery service for more than one year pumping dilute hydrofluoric acid is the lower pump component illustrated. Uncoated plungers have lasted from 2 to 3 months in this severe corrosion application.