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Base Mounted Pump
Brand: Thrush Co. IncThrush PF pumps are flexible-coupled, end suction, centrifugal pumps designed for hydronic heating, chilled water, and plumbing systems.
These pumps can be used for pumping of compatible low viscosity liquids free of solids (commercial applications).
Units are ball bearing, flexible coupled with coupling guard and bronzed fitted with a single mechanical seal.
Features- Increased efficiency over greater portion of performance range.
- The heavy cast iron bearing frame features precision bore and register surfaces to assure rigid, accurate centering of the shaft and impeller.
- Support feet are precision machined and fitted to the pump bracket to assure better coupling alignment during variations in pumping temperature.
- Oversized bearings provide up to 6 times ABMA-B10 minimum bearing life even under extreme conditions.
- Precision-machined carbon steel shaft allows for maximum loading with less than 0.002 inch deflection at sealing surfaces.
- Elastomer gaskets seal both the shaft sleeve and impeller capscrew to prevent shaft corrosion and isolate shaft from pumped liquid.
- Long-life mechanical seal is supplied with EPT elastomers, 303 stainless steel parts, carbon rotating washer, and Ni-Resist stationary seat.
- It is preassembled on a bronze shaft sleeve (cartridge seal assembly) to ensure correct mechanical seal positioning and easy servicing.
- The slip-fitted, pinlocked bronzed shaft sleeve, extending through the seal box, prevents shaft wear and corrosion.
- Impeller is designed to stabilize flow and reduce turbulence.
- It is manufactured by a vacuum-cast foundry process that provides smooth waterways and dimensional control not found in sand castings.
- Impeller-volute matching minimizes volute losses.
- The matching of internal pressures and velocities improves hydraulic efficiency and allows the impeller to produce its certified design flow and head minimizing wasted horsepower.
- Extra large bearing housing and grease reservoir allows for generous oil supply with outstanding heat dissipation.
- Conveniently located grease zerk fittings provide positive flush-through lubrication.
- Lipseal and slinger, located at each outboard bearing, prevent dirt, water, etc. from contaminating the lubricant, even when washed down with a hose.
- Bracket design incorporates a diverging seal chamber that creates a vortex action to stimulate seal chamber circulation.
- This eliminates air and foreign particle build-up and carries off frictional heat from seal faces.
- An internal flush line increases recirculation in seal chamber, provides manual venting, and, if required, can be adapted to an external flush line.
- This design eliminates the need for strainers, filters, or cyclone separators, since the pumping action does the job.
- Adequate drain tappings.
- Suction and discharge gauge tappings.
- Back pull-out design allows for maintenance work without disturbing piping.
Specifications
Brand
Materials
- Casing: Cast Iron G-3000 or Electroless Nickel Plating
- Casing Wear Rings: Brass C464
- Impeller: Bronze C87500 or Electroless Nickel Plating
- Power Frame: Cast Iron G-3000
- Power Frame Shaft: Steel 1045 or Stainless Steel 316
- Shaft Sleeve: Brass C464 or Stainless Steel 316
- Bracket: Cast Iron G-3000 or Electroless Nickel Plating
- Power Frame Bearing: Anti-Friction Ball
- Lubrication: Grease
- Seal: Type 21 250° Ni- Resist, Ceramic, Silicon Carbide or Ultiseal™
- Base Plate: Rolled Steel Channel
- Coupling: Flange & Sleeve or Hub & Element
Maximum Working Pressure
- 175 psi.
Maximum Working Temperature
- NI-Resist (Standard): 250° F
- Ceramic: 250° F
- Silicon Carbide: 300° F
- Tungsten Carbide: 300° F