Kenrich Products

The Leader in Heavy Duty
Hand Grout Pumps since 1986!

GP-1 Grout Pump

Hand Operated, Single Diaphragm, 1.9 Gallon Hopper

Our most popular pumps are single diaphragm hand-operated models. The GP-1 has a small 1.9-gallon hopper and can pump up to six gallons per minute with a maximum output pressure of 15 psi. Weighing only 19 pounds allows for great mobility. The supplied standard grout placement hose is 1 ½" ID by 5’ long clear vinyl tubing with a polished interior and a 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-1 grout pump Upgrades, Accessories and Repair Kits.

Kenrich GP-1 Grout Pump Features and Benefits.

  • Cementitious Grout Pump- Pumps non shrink sand based cementitious grouts.
  • Hand Operated- No electric or air power source, no problem.
  • 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-1:

Pump Type: Single Diaphragm, Self-Priming
Power Source:  Hand Operated
Output Capacity*:  6 gallons/minute (48 cu. ft./hr.)
Output Pressure:  0 to 15 psi
Hopper Capacity:  .25 cubic foot (1.9 gallons)
Placement Hose Size:  1-1/2" ID by 5’ long, Clear Vinyl
Discharge Head:  10 foot Vertical Lift
Dimensions:  22-1/2" x 10" x 14-1/2" high
Net Weight:  19 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


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 gauge 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-1 Heavy Duty grout pump, go to  Upgrades, Accessories and Repair Kits and the GP-1 Owner's Manual.