The contractor shall furnish a deep well product lubricated lineshaft vertical turbine pump, manufactured by NATIONAL PUMP or equal, with above ground discharge and furnished with suitable driver and accessories to meet the requirements herein or as shown on the drawings. The pump shall be designed and furnished to conform to the Hydraulic Institute and AWWA specifications for Lineshaft Turbine Pumps and shall comply with all local and state sanitary and safety regulations.

1. Data sheet completely filled in.

2. Performance curve showing excepted performance at design point. Curve will show head, capacity, efficiency, and horsepower based on bowl performances and shall cover the complete operation range of the pump from zero capacity to the maximum capacity.

3. Drawings of the proposed equipment giving general dimensions sufficient to determine how the equipment is to be supported and if it will fit within the space available.

4. Any additional information such as descriptive literature, manufacturer's specifications, and other data to demonstrate compliance with these specificataions.

Design conditions __________ USGPM, @ __________ feet total dynamic head (TDH), Minimum bowl efficiency _____________ %, Overall length, bottom of discharge head to bottom of strainer _____________ feet, Well inside diameter ___________ inches, Maximum allowable speed ________ RPM.

DISCHARGE HEAD: Shall be of close grained, cast iron ASTM A48 Class 30, or fabricated steel, accurately machined with a rabbet fit for mounting the driver and supporting the pump column assembly and with above ground discharge flange machined and drilled to ANSI standards for _________# rating and _______________ inches inside diameter. The design shall allow for the headshaft to couple above the stuffing box.

The standard stuffing box shall be cast iron and rated for ________ discharge pressure and shall contain a minimum of five acrylic graphite packing rings and shall have a grease chamber. The packing gland shall be bronze secured in place with stainless steel studs and adjusting nuts. The stuffing box bearing shall be SAE660 bronze. A rubber slinger shall be installed on the top shaft above the packing gland. The top shaft shall be 416 S.S. and shall extend through the stuffing box.

The headshaft shall be C-1045 carbon steel. Impeller adjustment shall be provided at the top of the headshaft by means of an adjusting nut which shall be locked in place.

COLUMN PIPE: shall be ASTM A53 grade B steel pipe, sized such that the friction loss will not exceed 5 ft. per 100 ft., based on the rated capacity of the pump and shall weigh not less than ___________ lbs/ft. The column pipe shall be furnished in interchangeable sections not more than (10) ft. in length for 1800 RPM and (5) ft. for 3600 RPM and shall be connected with threaded sleeve type couplings. The ends of each section of column pipe shall be machined with 8 threads per inch with 3/16" taper and faced parallel and the threads machined to such a degree that the ends butt against the bearing retainer shoulder to ensure proper alignment and to secure the bearing retainers when assembled.

NOTE: TOP AND BOTTOM SECTIONS SHALL NOT EXCEED 5 FT. IN LENGTH.

LINESHAFTS shall be C-1045 turned, ground and polished. They shall be furnished in interchangeable section not over (10) ft. in length. The shaft shall be sized in accordance with the maximum recommended horsepower for a given size of suspended rotating parts. To ensure accurate alignment of the shafts, they shall be straight within 0.005 in. total indicator reading for a 10 ft. section. The butting faces shall be machined with center relief and square to the axis of the shaft. The lineshaft shall be provided with 304 stainless steel sleeves at the location of each bearing retainer. The lineshaft shall be coupled with 1215 steel couplings, and shall be held in place by bronze bearing retainers with neoprene bearings at each threaded joint.

PUMP BOWLS shall be of close grained, cast iron ASTM A48 Class 30 and shall be free of blow holes, sand holes, or other detrimental faults and shall be accurately machined and fitted to close tolerances. The bowls shall have vitreous enamel lined waterways to reduce friction losses and provide a maximum efficiency and wear protection. The intermediate bowls shall be provided with SAE660 bronze bearings. The intermediate bowls shall be fitted with replaceable wear rings of bronze SAE660.

IMPELLERS shall be of CDA836 cast bronze and shall be enclosed type accurately machined, balanced, and filed for optimum performance. They shall be securely fastened to the shaft with a taper split collet of _____________ 1215 steel or ____________ 416 stainless steel.

COLUMN ADAPTER OR DISCHARGE CASE shall be close grained cast iron ASTM A48 class 30 or cast iron, threaded to properly match the discharge column.

SUCTION CASE shall be fitted with replaceable wear ring of bronze SAE660, grease packed SAE660 bronze bearing and protected by a bronze SAE660 sand collar.

BOWL SHAFT shall be ASTM A582 grade 416 stainless steel, turned, ground and polished.

The suction pipe shall be ________ ft. in length and of a size and weight at least equal to that of the column pipe. A galvanized steel strainer shall be provided having a net inlet area equal to at least four times the suction pipe area.

The motor shall be squirrel cage induction design, NEMA design B, _______ RPM vertical hollow shaft motor, with a non-reverse ratchet. Thrust bearing shall be chosen to handle the entire hydraulic thrust load of the pump plus the weight of the rotating parts. With an AFBMA B-10 on year minimum or five year average life under design conditions. The motor shall be premium efficiency with a WP-1 enclosure, 1.15 service factor, for use on _________ volt, three phase, 60 cycle electric service. The motor rating shall be such that at design it will not be loaded beyond nameplate rating and at no place on the pump curve shall the loading exceed the service factor.