Sliding Vane Pumps optionally offer electric heating.

Press Release Summary:

NP Series' 2.5 and 3 in. models support Electric Heating option, which may be used in place of jacketed heads. To accommodate this option, NP2.5 and NP3 models feature 2 additional bosses in gland area of inboard head for drilling of 2 heat pots. Heating pots are drilled and reamed to 12.5 mm and will accept any type of heating element. Additional features include special sleeve bearings, stainless steel relief valve spring, high-temperature paint, and high-temperature shaft packing.

Original Press Release:

Blackmer® Adds Electric Heating Option to NP Series Pumps

Grand Rapids, MI - Blackmer®, a global leader in rotary vane, centrifugal and peristaltic (hose) pump and reciprocating gas compressor technologies, is pleased to announce that it has upgraded the 2.5-inch and 3-inch models of its NP Series Sliding Vane Pumps with optional Electric Heating. The Electric Heating option may be used in place of jacketed heads in order to provide pump heating for applications that normally require jackets, such as handling asphalt, bitumen, molasses, lube oils, etc. Blackmer will continue to offer jacketed heads for customers who need NP pumps with steam and hot-oil capabilities.

The following modifications have been made to the NP2.5 and NP3 pump models in order to accommodate the Electric Heating option:

  • Two bosses have been added to the gland area of the inboard head in order to allow drilling for two heat pots
  • Thicker bearing cover allows for third heating pot to be located on the outboard side of pump
  • The heating pots are drilled and reamed to 12.5 mm and will accept any type of heating element that meets those dimensions
  • Special sleeve bearings, a stainless-steel relief-valve spring, high-temperature paint and high-temperature shaft packing will be included on any NP pump that is featuring the Electric Heating option

    Blackmer NP Series pumps are specifically designed to offer maximum versatility for handling a wide variety of clean, non-corrosive liquids, including fluids of varying viscosities and temperatures. These pumps have been designed to minimize sheer and agitation while providing excellent self-priming and dry run capabilities.

    For more information on the Blackmer NP Series Sliding Vane Pumps, please go to Blackmer is a member of the Dover Corporation's Pump Solutions Group (PSG(TM)). For more information on PSG and its member companies, visit

    Blackmer® is the leading global provider of innovative and high-quality rotary vane pump, centrifugal and peristaltic (hose) pump, and reciprocating compressor technologies for the transfer of liquids and gasses. For more than a century, the Blackmer name has stood for unparalleled product performance, superior services and support, well-timed innovation and a commitment to total customer satisfaction. Supported by a worldwide network of distributors and original equipment manufacturers, Blackmer pumps and compressors are used in a multitude of applications in the Process, Energy and Military & Marine markets. Blackmer-headquartered in Grand Rapids, Michigan, USA-is a member of Dover Corporation's Pump Solutions Group (PSG).

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