SKU: 2973 Category:



Reversible crankcase for easy right or left hand mounting

Solid brass manifolds

Hardened stainless steel piston guides

Highly efficient stainless steel check valves

Solid ceramic plungers

High and low pressure seals: high quality buna-textile packings

Additional anti-extrusion ring under the seal

Special forged brass oversized connecting rods

Die cast anodized aluminum crankcase

High quality ball bearings

Optimal oil bath for high speed operation

Technical Notes


Maximum Flow: 4.0 GPM

Maximum Pressure: 3500 PSI

Maximum Pump speed: 3400 RPM

Minimum Horsepower Requirements: 12.75 hp for gas engines

Inlet: 1/2″FPT

Discharge: 3/8″FPT

Shaft Diameter: Hollow 1″ with gas flange

Crankcase Capacity: 18 oz. use SAE 20W/30 oil

Weight: 20.3 lbs.

Lubrication: fill crankcase with SAE 20W/30 oil per pump specifications. Change oil after initial 50 hour break in period, then in 500 hour intervals thereafter.

The Comet pump is warranted by the manufacturer to the original purchaser to be free from defects in material and workmanship under normal use and service. “Normal use and service” means not in excess of the recommended maximum speeds, pressures, and temperatures or handling fluids not compatible with component materials. This warranty shall not apply to any pump which has been repaired or altered to affect the performance or reliability of the pump. Warranty does not apply to (a)freight, (b) freezing damage, (c) damage caused by parts or accessories not obtained from or approved by Comet, (d) damaged by misuse and/or misapplication, (e) normal wear of moving parts or components affected by moving parts.

Period of warranty shall be five years from date product is shipped from manufacturer’s factory. Liablity of manufacturer under the foregoing warranty is limited to repair or replacement at the option of manufacturer of that product, which according to the manufacturer’s investigation was deemed defective at time of shipment. This warranty is lieu of all other warranties, expressed or implied, including any warranty of meerchantability and/or any and all other obligations or liabilities on the part of the manufacturers.


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