impeller.net The Online Pump Magazine

23.11.2015

Centrifugal Pumps Designed by Johnson Pump to Meet Challenges in Oil, Chemical and Supply Vessel Applications

SPX Flow s Johnson Pump brand has a number of ranges of centrifugal pumps, including the CombiSump, CombiSumpMag, CombiPro, CombiProMag and CombiProV, which are ideal for use in numerous offshore utility applications. The pumps are designed for high reliability and manufactured to meet or exceed industry standards.

The pumps are a part of Johnson Pump s Combi-system which provides modular solutions using common components shared across different models. A choice of materials, impellers and sealing options enables these pumps to meet a wide range of application requirements including lube oil, condensate and many types of water pumping duties. The reliability, modularity and flexible design options offered by the Combi ranges ensure high performance with low installation and ongoing maintenance costs.

The CombiSump and CombiSumpMag are vertical long shaft sump pumps designed for use with thin liquids. They have a minimum submersible depth and ensure increased reliability with highly effective silicon carbide axial and radial bearings which are lubricated by the pumped liquids. The electric motor is situated at a distance from the pumped liquid and pump depth can be varied using multiple pump shafts with intermediate bearings to meet specific application requirements.

These pumps are designed for low Net Positive Suction Head (NSPH) values with optimized hydraulic performance. They offer easy maintenance in compact form and can meet a wide span of duties. Base plates are designed to meet existing support arrangements for easy installation. The CombiSump offers options for mechanical or packed gland seals. The CombiSumpMag has a magnetic coupling which has the advantage of avoiding leaks with an hermetic seal in a relatively simple pump configuration.

The CombiPro is a range of horizontal centerline supported centrifugal pumps ideal for hydrocarbon duties. They have a standardised seal chamber designed to fit all API 682 seal configurations with a choice of single or dual seal construction and the option of a seal less design using a magnetic coupling in accordance with API 685. All of these pumps are robustly designed, complete units on API 610 base plates. The modularity of the range enables the optimum base plate configuration for each pump/motor combination.

Well-suited for use on supply vessels, the CombiPrime is an innovative self-priming, liquid ring pump that does not require a separate vacuum pump, vacuum system or airline within its installation. It is a well-proven design that has been shown to offer exceptional reliability in the toughest operational circumstances for pumping of clean or slightly polluted liquids in services such as firefighting, bilge and ballast and other general duty pumping applications. Requiring just one power supply running to its motor, the pump offers a relatively low power solution that may be particularly advantageous in an emergency situation where alternative configurations that use a venturi require additional power to drive the compressor in order to self-prime.

SPX Flow has a close relationship with the oil and gas industry and vast experience in the supply of pumps through its Johnson Pump, Bran+Luebbe, ClydeUnion Pumps and Plenty brands.

Source: SPX

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