Purchase of 100 Residential Grinder Pumps

Pump shall be a centrifugal sealed grinder type. Progressive Cavity or Positive Displacement (PD) pumps shall not be considered equal or allowed. The pump castings shall be high quality cast iron, ASTM A-48, Class 30. The impeller shall be multiple vane, centrifugal type, constructed of Class 30 cast iron, designed for maximum allowable flow. All external mating parts shall be machined and Buna-N Rubber O-ring seals. Fiber or paper gaskets shall not be acceptable. All fasteners exposed to the pumped liquid shall be 316 series stainless steel. The grinder unit shall be integrally built with a submersible type motor. The grinder pump shall be capable of macerating all material in normal domestic and commercial sewage including reasonable amounts of foreign objects such as small wood, sticks, plastic, thin rubber, sanitary napkins, disposable diapers and the like to a fine slurry that will pass freely through the pump and 1-1/4" discharge pipe. Pump weight shall not exceed 85 lbs. Electrical Power/Control Cord Motor Bearings and Shaft Mechanical Seals Pump Impeller Grinder Construction The District reserves the right to accept or reject any or all bids received that do not meet the specifications of the advertisement.

Division 01 -	General Requirements.
Division 10 -	Specialties.
Division 11 -	Equipment.