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NP-Sliding Vane Pumps

NP-Sliding Vane Pumps
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Spec Sheet 103-001 Section: Effective: Replaces: NP Series Fluid Processing and Transfer Sliding Vane Pumps NP2 with Cartridge Mechanical Seal NP2 with Steam Jackets How Blackmer’s sliding vane action works Application Versatility The NP type positive displacement sliding vane pumps are specially designed to offer maximum versatility for handling a wide range of clean, non-corrosive fluids. Efficiency Means Energy Savings The high volumetric efficiency and symmetrical bearing support of the NP pumps means they require less horsepower than other PD pumps and up to 50% less power when handling viscous fluids. This means cost savings on both motors and electricity to operate the pumps. Self-Priming and Dry Run Capability The NP pumps are self-priming, and the self-adjusting vanes help maintain this capability. NP pumps can run dry for short periods of time for priming and line stripping. High Viscosity The NP pumps are ideal for handling viscous or shear sensitive fluids. The key to the NP series’ versatility is Blackmer’s unique sliding vane rotor design that provides sustained, high level performance over a wide viscosity range. Slow operating speeds and non-pulsating flow minimizes shear and agitation of the fluid. Optional Heating Jackets are available if required.

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Multipurpose Sliding Vane Pumps for a wide range of fluids and viscosities Long Bearing Life The unique head and bearing design allows a small quantity of fluid to flow from the discharge side of the pump to the bearings. The pumpage is then drawn to the suction side of the pump through passages in the heads. The small, continuous flow of fluid over the bearing surfaces provides a hydrodynamic film, which minimizes temperature rise for longer bearing life. Unique sleeve bearing design Solvents (VOC’s) Aqueous Film Forming Foam (AFFF) Edible Oils Black Liquor Sodium Silicate Refined Fuels

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Design Parameters Flow Rates: 5 to 500 U.S. gpm (19 to 1,893 L/min) Relief Valve: Integral cast iron valve with steel spring (optional corrosion resistant relief valve with stainless steel spring) Casing: Cast iron construction Drain Plugs: Allow for easy draining, standard on ductile iron casing, optional on cast iron casing Flanges: NP1.5" model: NPT tapped casing ports Rotor & Shaft: Ductile iron rotor with hardened steel shaft Jacket Options: Pumps available with optional Electric Heater ports or heating jackets for use with steam or hot oil. Both options heat the pump for highly...

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NP Series Fluid Processing and Transfer Pumps Pump Performance Data* Pump Model ssu cP gpm L/min Max rpm bhp kW Pump Model ssu cP gpm L/min Max rpm bhp kW * Approximate capacities and horsepower (bhp) are for the conditions specified at 50 psi (3.45 bar) differential pressure. Refer to Blackmer Characteristic Curves for capacities and horsepower at other operating conditions. Maximum Operating Limits Nominal Flowrate Pump Model Note: Optional materials of construction may be required to meet specific application requirements – refer to Blackmer Material of Construction Sheets. For operating...

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