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Sweet Success

Three new Gorman-Rupp Super T Series Self priming Pumps have been installed at a confectionary production factory.

UK Distributors of Gorman-Rupp Pumps, Hydromarque Ltd, have supplied three pumps to replace existing pumps that were fitted with external priming devices.

The Gorman-Rupp Super T Series Self Priming pump has an integral priming chamber that removes the need for external priming devices, thus reducing maintenance and running costs.

The pumps have been installed in stages, doing one at a time and are all now pumping chocolate effluent from a sump approximately 4 metres deep.

Initially the client was sceptical about using this type of pump, however, following various visits to Anglian Water sites where there are hundred’s of these pumps in operation and on a lot more arduous duties that they required, they agreed to try the first pump and have never looked back since.

The original pumps were giving constant problems with blocking and losing prime due to unreliability and faults with external priming devices. Self Priming Pumps are a sensible solution at this site because they require very little attention, resulting in significant savings of maintenance time and money. All that’s needed is an initial priming and Gorman-Rupp Super T Series pumps will continue to re-prime automatically. In fact the pump will reprime with only a partially filled pump casing and a completely dry suction line.

The Gorman-Rupp self priming Super T Series pump is designed for trouble free operation and has superior solids handling capabilities, which makes them suitable for a variety of applications. The large volute design allows automatic re-prime in a completely open system without the need for suction and discharge check valves.

Maintenance has been greatly improved at this site due to the ease of servicing this type of pump. Servicing can be carried out using common hand tools without disconnecting any pipework. The Impeller, seal, wearplate and flap valve can all be accessed through the shimless coverplate opening, easily removed with a grip handle and pusher bolts.

If the pump shaft, seal or bearings need servicing then the whole rotating assembly can be removed from the pump without disturbing the pump casing, pipework, overhead V belt drive arrangement or the motor. The pump is fitted with the Gorman-Rupp exclusive double floating, self aligning, oil lubricated mechanical cartridge seal with stationary and rotating faces of silicon carbide (tungsten titanium is also available).

Even though the pumps come with a manufacturer’s 5 year warranty, extended life has been made available to the site maintenance team as both the seal and the bearings have external monitoring by means of a sight glass. Also, an atmospheric barrier, along with two lip seals, provide additional protection for the bearings.

Productivity is a major concern at this factory, however, with the Super T Series pump downtime is virtually eliminated because they are designed for clogg free performance. The pump will handle spherical solids up to 3” (76mm) in diameter and allow solids to pass through the entire pump, not just the Impeller.

In the past it was necessary for Service Personnel to enter the wet sump and break down fat build up as previous pumps were not removing this satisfactorily. The new pumps are now dealing with everything that enters the sumps and as they are mounted “high and dry” with only the suction pipe in the well, there is no longer a need for dangerous confined space entries.

The pumps were supplied with overhead V belt drive, so should there ever be a need to change the duty of the pumps at a later date then this can be easily achieved by changing the pulley sizes.

Gorman-Rupp Super T Series Self Priming pumps are available in 2”, 3”, 4”, 6”, 8” and 10” versions, capable of achieving 40 m head and up to 7.5 m suction lifts.

More recently, Gorman-Rupp have launched their new Self Priming Pump, the Ultra V Series pump, with greater efficiencies, up to 40% increased flow, self cleansing features, reduced footprint area and capable of heads up to 100m.

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