L Series Flex Coupled |
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| The contractor shall furnish (and install as shown on the plans) an MTH L50 Series horizontal pedestal mount regenerative turbine type pump model _____ size ____ of (BRONZE FITTED) (ALL IRON) (ALL BRONZE) (316 STAINLESS STEEL) construction. Each pump shall have a capacity of ___GPM when operating at a total head of ___feet. Suction pressure will be ___feet with a liquid temperature of ___degrees F. The pump is to be furnished with a mechanical seal with stainless steel metal parts, (Buna) (EPR) (Teflon) (Viton) elastomers, (ceramic) (ni-resist) (silicon carbide) (tungsten carbide) seat and carbon washer. The pump shall be low NPSHR inducer style design with a centrifugal radial vane design impeller and a multi-vane diffuser for balancing radial loads. Pump will be furnished with a shaft sleeve or stainless steel shaft and shall be vertically split design with replaceable external channel rings that have water passageways accurately machined into each ring. The suction and discharge will have (NPT) (SAE) (BSP) (ISO) threads located in the top vertical position for self-venting and shall be cast separately from one another. The impeller(s) shall be hydraulically self-centering and no external adjustment shall be necessary. The pump shall be mounted on a bearing pedestal with sealed, grease
lubricated ball bearings having a two year minimum design life under a
maximum pump differential pressure of 1000 PSI, and the shaft shall be
of 416 stainless steel material. Pump and motor shall be mounted on a
common steel baseplate, flexible coupled with coupling guard to a standard
horizontal NEMA __HP __phase __Hertz __volt __RPM (open dripproof) (totally
enclosed) (explosion proof) motor. Coupling alignment shall be checked
after installation. Each pump shall be tested at the specified capacity
and head prior to shipment. The motor shall be sized to prevent overloading
at the highest head condition listed in the specifications. |
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