The Top Gear pump design is based on an internal idler gear rotating inside of a larger rotor. Internal gear pumps are robust, give an even flow, handle both low and high viscosity products, are capable of high pressure and are self-priming.
TopGear G-series
TopGear G-series are available in cast iron with inline port connections. Baseplate-mounted. Heating and cooling jackets are available for pump cover and around shaft seal. Built-on single or double safety relief valves are available.
Material of components
Component |
Model: Material |
Casing |
Cast iron |
Idler and rotor |
Nodular iron, Stainless steel |
TopGear H-series
TopGear H-series is available in nine different sizes. The modular design gives a wide range of possibilities. Shaft seal options include single and double mechanical seals as well as packed gland and cartridge seal. Baseplate-mounted. Heating and cooling jackets are available for pump cover and around shaft seal. Single or double safety relief valves are available built-on. Connections from 32 to 150 mm.
Material of components
Component |
Model: Material |
Casing |
Stainless steel, Cast steel, Nodular iron |
Idler and rotor |
Nodular iron, Stainless steel |
TopGear L-series
TopGear L-series is available in six different sizes. Shaft seal options include mechanical seals, packed gland and double flushed PTFE lipseals. Flange-mounted or bracket for foot-mounting, the TG L pedestal fits to IEC-flanged motors. Safety relief valves are available built-on or separately. Connection sizes from 1" to 1.1/2".
Material of components
Component |
Model: Material |
Casing |
Nodular cast iron One size in stainless steel |
Idler and rotor |
Steel |
Jacket options
Heating and cooling jackets guarantee the performance of the pump in a start-up or a shut-down procedure. They also provide the pump with the best condition for the seals during operation. Different options: thermal oil, steam or electrical heating.
Safety relief valve options
Built-on safety relief valves protect the pump, as well as other equipment in the system, from overpressure. When the pump is used bidirectionally, a double safety relief valve is provided.
Shaft seal options
Shaft seal options include packed gland, single and double mechanical
seals (to EN 12756), lip seals and cartridge seals.