SKF's introduces the new Spandau high pressure immersion pump range, designed to suit oil, lubrication and coolant systems, as well as a diverse industrial applications. The latest PX pump range, engineered for energy efficiency and reduced maintenance costs, combines a seal-less design and closed impellor with a modular construction for easy configuration and efficient function.

The SKF PX high pressure immersion pumps deliver flow rates up to 500l/minute, at pressures of 25 bar, with a maximum delivery head of 250m and an operating temperature range of -10 to +90°C. Each pump is constructed from either a tough cast iron or stainless steel body, uses industry standard motors, a high-grade stainless steel motor and impeller shaft, separated by a robust coupling. Instead of a conventional seal, the new PX pump range can also be fitted with a gap bush immediately beneath the reservoir lid to allow any leakage from the pressure chamber or shaft to be drained directly back into the reservoir, preventing external leaks and further extending service life.

In addition, the modular construction simplifies specification of correct operating pressure, delivery rate, immersion depth, motor output and construction and accessories materials. For example, the impellor body, including both shaft and casing, can easily be extended by the addition of extra sections to allow the unit to be used in tanks or reservoirs of varying depths.

The range is designed for easy maintenance, quick, simple installation, using industry standard DIN EN 12157 fittings, as all parts are accessible from outside the tank or reservoir. The range includes the compact PXK, intended for installation into machinery where space is limited, and the PXA, which incorporates a pre-programmable frequency converter within the motor unit.

The PXA is particularly useful in applications with varying demand or where energy consumption needs to be tightly controlled, as the output of the motor and thus of the pump unit, can be automatically regulated to meet changing process conditions

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