GB – Heated and unheated pumps

The new AP & HD versions


The GB range is a heated gear pump (unheated option available) designed for pumping products that have to be heated to be pumpable. The design can incorporate heating (220v or 110v) by thermostatically controlled electricity, thermal oil or steam. Heated gear pumps are typically used for Bitumen, Crude Oil or Refined Tar among other generally viscous fluids. Our pumps are often supplied with a greaser which can be mounted remotely to allow easy greasing of the seal cartridge and give the best possible service life. The GB style features a seal cartridge to avoid leakage normally associated with bitumen pumps.

Suited to:

Often maintenance free, GB pumps are perfect for market sectors that require long and consistent pumping. Offering a simple and hard-working design, our GB pump range is most suited to:


  • Highly customisable range of gear pumps, with heating capabilities
  • A simple, two moving part design
  • Internal bearings which cater for self lubricating liquids, with external lubrication also available to those who require it
  • Discharge pressure of up to 21 bar (300 psi)
  • Supplied with or without an integral relief valve
  • Can heat and operate with cargo of up to 220 °C
  • Capacity: 5 litres per minute to 2273
  • A choice of rotors available - straight spur gears, double helical gears
  • Almost pulse free operation


Our Heated Pumps are suited to pumping a range of liquids, especially thick viscous cargo such as:

  • Refined tar
  • Bitumen
  • Asphalt
  • Cocoa butter
  • Wax
  • Molasses
  • Fats
  • Soap
  • Cocoa mass
  • Petrol
  • Paints
  • Glue
  • Grease
  • Resins
  • Varnish
  • Glucose
  • Viscose
  • Silicate of soda
  • Oils
  • Chocolate
  • Printing ink
  • Paraffin
  • Cocoa liquor
  • Alkalis
  • Polymers
  • Foodstuffs

Technical talk:

Our GB pumps have a range of uses, stemming from their formerly known name of AP and HD pumps, which are:

  • Cast iron: usually used for pumps up to 200 degrees celsius. At even higher temperatures, cast steel is used
  • All pumps have hardened steel shafts
  • Pump inlet and outlet: connections available to suit individual requirements, however DIN PN16 is standard
  • Relief valves: can be fitted to standard pumps
  • High temp: special high temperature bearing material is used to ensure long life
  • Gland packing: selected to suit individual application
  • Albany seal cartridge: can be used as an alternative to packed
  • Electric heating: can be 110 volt or 230 volt. Up to 1200 watts is available to keep the pump at 120 degrees celsius with a thermostat

For more information on this specific range, download our GB brochure

Related Case Study

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Our Warranty

Our support offerings range from basic technical support to options including direct access to senior support engineers and customised delivery. Many of our pumps come with extended, even lifetime, warranties, with tailored support packages. Simply choose the level of support your business requires. Depending on the package you choose, you’ll receive regular maintenance visits, gain access to engineers directly for one-to-one support by email or telephone, and enjoy a range of other benefits.