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Complete Compiled Specification.pdf - Peck Ormsby Construction

Complete Compiled Specification.pdf - Peck Ormsby Construction

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BASE-MOUNTED PUMPS:<br />

Furnish and install the base-mounted pumps of the size, type, and capacity indicated on the drawings.<br />

All base-mounted pumps shall be single stage, non-overloading, centrifugal volute type. Impellers shall be<br />

bronze and shall be dynamically balanced. Bearings shall be of the ball or roller type and the shaft be steel.<br />

Pumps shall be provided with leakless mechanical shaft seal. All pumps shall be provided with flexible couplings<br />

which shall impose no restriction or normal end play or expansion.<br />

Each pump shall be provided with a cast iron or steel baseplate of ample size to hold both the pump and motor<br />

in alignment. Pumps and motor shall be aligned when running at normal temperature. Final alignment shall be<br />

made immediately prior to testing under the supervision of a representative of the pump manufacturer.<br />

All pumps shall operate at 1750 RPM. Motors shall be phase and voltage specified on plans, horizontal ball<br />

bearing, dripproof.<br />

Pumps shall be designed in accordance with the standards of the Hydraulic Institute, including the latest<br />

modifications.<br />

High points of pump casing shall be provided with air vent cocks. Cocks shall be extended outside of insulation<br />

specified.<br />

Pumps shall be Bell & Gossett or Taco.<br />

PUMP SUCTION DIFFUSERS:<br />

Pump suction diffusers to match the system pipe size and pump inlet size shall be furnished and installed where<br />

shown or noted on the drawings. Units shall consist of angle type body with inlet vanes and combination<br />

diffuser-strainer-orifice cylinder. Suction diffuser shall be Bell & Gossett or Taco.<br />

HOT & CHILLED WATER SPECIALTIES:<br />

Furnish and install complete the water specialties including the air separation tanks, ASME and bladder type<br />

expansion tanks, tank fittings, air vents, and specialty items required to make a complete and operable hot and<br />

chilled water system as shown on the drawings and as required to complete system intended.<br />

Manufacturer: Bell & Gossett, Taco, Wessels.<br />

Manual air vents shall be installed at all high points in the water system. Air vents shall be 3/8" ball valves and<br />

shall be installed on a 1/2" pipe nipple--6" long. Run 1/4" copper tube from vent to near floor-anchor tube<br />

securely to wall, pipe, or structural member.<br />

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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009<br />

HEATING-COOLING 15700-19

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