The contractor shall furnish an industrial product lubricated lineshaft vertical turbine pump, manufactured by NATIONAL PUMP or approved 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 specifications.

Design conditions ____________ USGPM, @ _____________ feet total dynamic head (TDH), Minimum bowl efficiency _______________ %, Overall length, bottom of discharge head to bottom of strainer _____________ feet, sump depth ___________ feet, Suction barrel (if required) length ____________ inches and 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 mechanical seal or 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 shaft shall be 416 S.S. and shall extend through the stuffing box.

If a mechanical seal is used, than a four piece spacer type coupling shall be used to allow seal replacement without motor removal. This will require a motor stand to be used with a cast iron discharge head or an extra height fabricated steel discharge head.

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 shal be ASTM A 53 grade B steel pipe. Size shall be 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) feet in length for 1800 RPM and (5) feet for 3600 RPM and shall be threaded or flanged. If threaded, the ends of each section of column pipe shall be machined with 8 threads per inch with 3/16" tpaer 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.

LINESHAFTS shall be 416 stainless steel, turned, ground and polished. They shall be furnished in interchangeable sections not over (10) feet in length for 1800 RPM and (5) feet for 3600 RPM to properly match the discharge column. The shaft shall be sized in accordance with the maximum recommended horsepower for a given size of shaft, taking into account the effect of the hydraulic thrust on the pumping equipment and the weight of the shaft and 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 coupled with 304 S.S. stainless steel couplings, and shall be held in place by bronze bearing retainers with neoprene bearings at each flanged or threaded joint.

PUMP BOWLS shall be of close grained, cast iron ASTM A48 Class 30. 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 shall be of close grained cast iron ASTM A48 Class 30, threaded or flanged to properly match the discharge column.

SUCTION BELL shall be fitted with a replaceable wear ring of bronze SAE660, grease packed SAE660 bronze bearing and protected by a bronze SAE660 sand collar. Suction shall be fitted with a galvanized steel clip on type basked strainer.

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

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 rotating parts. With an AFBMA B-10 one year minimum or five year average life under design conditions. The motor shall be premimum 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 curver shall the loading exceed the service factor.

*Solid shaft with mechanical seal.