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EZstrip progressing cavity pump improves efficiency and reduces downtime at sewage treatment works

After seeing the revolutionary benefits offered by NOV Mono’s EZstrip transfer pump at one of the company’s UK roadshows last summer, Thames Water has installed one of these innovative pumps to improve efficiency and reduce downtime at Beckton sewage treatment works in Greater London.

The EZstrip progressing cavity (PC) pump, which has been mounted vertically, has been installed in a pump station to transfer returned sludge to the buffer tanks at a capacity of 90m3/h and a delivery pressure of 4 bar.

Dave Rudman, Maintenance Team Manager at Thames Water, commented: "After seeing the EZstrip in action at one of Mono’s roadshows last summer, I decided to specify one for the site in Beckton. As well as the speed in which the rotor and stator can easily be replaced, the EZstrip could be mounted vertically, which was an added bonus due to the building’s restricted space.

"Since it was installed, the pump has been running smoothly – we are very happy with its performance. It was also a major advantage that Mono could manage the whole installation."

Mono’s EZstrip progressing cavity pump is the biggest leap forward in PC pump design for 30 years and is an extension of Mono’s popular Compact C Range. The EZstrip has been specifically designed to provide a quick and easy way to disassemble, de-rag and maintain a PC pump, eliminating the costly maintenance and down time that servicing can often cause.

The chamber of the EZstrip pump has a two piece design which can be opened in less than one minute, the suction chamber and rotating parts de-ragged and the chamber reassembled with a spanner and an Allen key. The whole operation takes less than two and a half minutes, depending on the severity of the rag blockage.

The EZstrip pump can be installed into new plants or retrofitted into existing Mono Compact C installations. No electrical disconnection is required and suction and discharge pipes remain untouched when installing the pump in a horizontal position. The model range has a capacity of up to 165m3/h and 12 bar pressure, and is available in either cast iron or stainless steel. A choice of rotor and stator materials are available, including WRAS compliant elastomers and a pre-assembled drive train, with two year warranty.

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