Products: Grinder Pumps
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The KEEN GRINDER PUMP KFG2-21 & 23 series centrifugal grinder pumps easily handle residential, light commercial or industrial sanitary waste, reducing it to fine slurry. The KFG2-21 & 23 pump is designed for use in pressure sewer applications or any piping network.
The KFG2-21 & 23 grinder pump retrofits into many existing competitor pump installations. The KFG2-21 & 23 grinder pump operates with the same control panel and installation piping / rail system.
The recessed vortex impeller design of the KFG2-21 & 23 grinder pump provides trouble free, non-overloading operation over the entire performance curve. The KFG2-21 & 23 pump produces capacities to 90 gpm with heads to 70 feet.
The KFG2-21 & 23 series grinder pump features:
- Interchangeable into competitor installations
- Dual mechanical seals ( silicon carbide)
- Class F motor, internal overload protection
- 3 Bearing shaft support
- Internal moisture detection
- Strong, 2 HP motor
- 208 / 230 volt, 1-phase
- 208 / 230 / 460 volt


Features and Benefits
- Triple Sealed Cable Entrance
Stainless steel strain relief cord grip with compression grommet protects outer cord jacket. Epoxy filled inner cord cap with individually soldered wires provide anti-wicking moisture protection to the motor even if power cable is cut or damaged. - Modular Pump Design
Commonality of parts across the Keen product line minimizes the amount of parts required for servicing. Heavy duty ASTM A48, Class 30 cast iron components. - Strong Motor
Powerful high torque motor for reliable pump operation.
208 / 230 volt, 1-phase
208 / 230 / 460 volt, 3-phase
Pressed stator securely holds motor and efficiently transfers heat. Class F insulation with overload protection in oil filled chamber for cool operation and long motor life. - 3- Bearing Support
Motor / Pump shaft securely held with upper and lower ball bearing plus addition sleeve bearing in lower seal chamber. Long 50,000 hour B-10 bearing life. - Double Mechanical Seal Protection
Dual silicon carbide mechanical shaft seals provide twice the moisture protection for the motor. Dual seals are housed in a secondary oil filled seal chamber. Tougher silicon carbide seals better handles sand, grit and abrasive materials. - Moisture Detection
Seal leak probe signals alarm in control panel for scheduled maintenance. - Non-Overloading Hydraulic Design
The recessed centrifugal impeller allows 100% performance curve operation from shut-off to maximum flow without damage to the pump or system. The recessed vortex impeller is out of the passageway of fluid flow, eliminating concerns of blockage or wear. - Proven Grinder Assembly
Hardened (Rockwell 56-60) stainless steel grinder assembly has 30+ years proven field experience. The reversible grinder ring and grinder impeller effectively reduces solids into a fine slurry, easily passable in a piping system without concerns of clogging. Highly efficient 16,600 cuts per second. - Easy Piping Connection
Removable 1-1/4” NPT connection flange for simple and easy connection to discharge piping. - Accessories Included
Stainless steel lifting handle and anti-vibration rubber mounting feet are included with the pump.



