Specifications - City of Montpelier, Vermont

Title:Montpelier District Heating15453 – Plumbing PumpsCity of Montpelier, VTIssue Date:September 28, 2012Page #:3 of 9device. After drying, coat internal parts with light oil, kerosene, or antifreeze.Dismantle bearings and couplings, dry and coat with an acidfree, heavy oil, andtag and store in dry location.PART 2– PRODUCTS2.1 PUMPS, GENERALA. Pumps and circulators: Factory assembled and factory tested.B. Preparation for Shipping: After assembly and testing, clean flanges and exposedmachined metal surfaces and treat with an anticorrosion compound. Protectflanges, pipe openings, and nozzles with wooden flange covers or with screwedinplugs.C. Motors: Refer to Division 15 section “ELECTRICAL REQUIREMENTS FORMECHANICAL EQUIPMENT” for motor requirements. Select motors that arenonoverloading within the full range of the pump performance curve, unlessotherwise directed by the ENGINEER.D. Apply factory finish paint to assembled, tested units prior to shipping.2.2 INLINE BOOSTER PUMPSA. General Description: Circulators shall be horizontal inline, centrifugal, selflubricating wet rotor type with replaceable cartridge, or permanently lubricatedclose coupled type with seal system, allbronze with mechanical seals, and ratedfor 125 psig working pressure and 225 deg F continuous water temperature.B. Casings: Bronze or Iron, with threaded companion flanges for piping connectionssmaller than 21/2 inches.C. Impeller: Nonmetallic glass filled Noryl or polypropylene.D. Pump Shaft: Ceramic shaft for wet rotor type circulators, alloy steel or coatedcarbon steel shaft for permanently lubricated type circulators.E. Mechanical Seals: Carbon/silicon carbide cartridge type seal for permanentlylubricated type circulators.F. Manufacturer’s Inline Booster Pumps:PLUMBING PUMPS 15453 3