Kenrich Products

The Leader in Heavy Duty
Hand Grout Pumps since 1986!

GP-3A Grout Pump

Air Operated, Single Diaphragm, with 4.6-gal. Hopper

The GP-3A grout pump is an air-powered version of our GP-2. Using only 3 cfm of compressed air at 50 psi, this model uses an air cylinder and pneumatic air logic block to control the pumping action. Controls on the pump include a pressure regulator and an adjustable speed control. Maximum output capacity is five gallons per minute and the net weight is only 27 pounds. 

 The supplied standard grout placement hose is 1 ½" ID by 5’ long clear vinyl tubing with a polished interior and rigid straight steel tube in the end. Optional 1 ½" hoses available in 10’, 15’ and 20’ lengths. Popular options include our ¾" and 1" hose reducer kits which attach directly to the outlet of the pump and are used in place of the standard 1 ½" hose. Click here for more information on our line of GP-3A grout pump Upgrades, Accessories and Repair Kits. 

Kenrich GP-3A Air Operated Grout Pump Features and Benefits.

  • Cementitious Grout Pump- Pumps non shrink sand based cementitious grouts. 
  • Air Operated- needs an air power source.
  • Low Pressure- 15 psi max. - Ideal anywhere high pressure is not required.
  • Heavy Duty- Built for durability and long lasting performance
  • Lightweight and Portable- Take the pump to where you need the grout.
  • Easy to Operate- Minimal maintenance required.
  • Built with pride in the USA.
  • In Stock / Ready to Ship UPS. We have Kenrich grout pumps, accessories and parts in stock and are ready to ship UPS ground, 2 day or overnight. 

Kenrich Pump Specs/ Model GP-3A:

Model Kenrich GP-3A
Pump Type Single Diaphragm, Self-Priming
Air Consumption No less than 3 cfm
Power Source Compressed Air
Pump Controls Start/Stop Switch, Speed Control, Air Pressure Regulator and Gauge
*Output Capacity 5 gallons/minute (40 cu. ft./hr.)
Output Pressure 0 to 15 psi
Hopper Capacity .62 cubic foot (4.6 gallons)
Placement Hose Size 1-1/2" ID by 60" long, Clear Vinyl
Discharge Head 10 foot Vertical Lift
Dimensions 23-1/2" x 12" x 23" high
Net Weight 27 pounds
*Output and performance will vary depending on cycle rate, viscosity of the grout mixture and pressure conditions.


 Kenrich grout pump hose reducer kit, from1 1/2" to 1" ID x 5' clear vinyl hoseKenrich Pump's 1 1/2" heavy duty clear vinyl replacement hose in 5' sectionsGalvanized steel pump hose end nozzles  4.6 gallon grout pump hopperpressure gauge


Hose Reducer Kits:                                 3/4" and 1" ID Available

1-1/2" ID Hose Lengths:                        

5', 10', 15', 20' and 50' long
1-1/2" Hose Ends:                                     Straight, 90 degree and 180 degree Elbows
Hi-Capacity Hopper Kit                                 Converts GP-1 to GP-2 Specifications
Pressure Guage 15 psi, not available aftermarket - see pressure guage video!


Pumping Aggregate Materials Through Your Kenrich Grout Pump.

The Kenrich line of heavy-duty grout pumps are designed to pump non-shrink sand based cementitious grouts. However if you need to pump Grout with AGGREGATE, we recommend a factor premix Grout in the bags with no bigger than 3/8” pea gravel. Crushed rock/stone 3/8" in size and larger, not recommended do to jagged edges, even though some contractors make it work. Call the office for more info at 503-281-6190.

For more information on our Kenrich Products’ Model GP-3A Heavy Duty grout pump, go to  Upgrades, Accessories and Repair Kits and the GP-3A Owner's Manual.