New CombiTherm Plus pump provides safe and reliable transfer of hot fluids without the need for additional, external cooling systems (photo: SPX)
The air-cooled CombiTherm Plus pump provides safe, efficient transfer of hot oil or hot water in a wide range of applications including injection moulding, chemical processing, asphalt/bitumen and tar processing, deep frying systems, steam generators, fuel heaters and heat recovery systems. The pump keeps fluid temperatures uniform to ensure processes are efficient and predictable while its design protects seal faces and bearings from the heat of the fluid; ensuring durable, low maintenance, long life operation.
The design of the CombiTherm Plus pump provides enhanced cooling using optimised cooling fans and large fins to keep the temperature around the shaft sealing below 220 °F even at high process temperatures up to 660° F. The heavy duty centrifugal pump is centerline mounted which allows thermal expansion without affecting shaft alignment. The combination of low temperature and perfect alignment protects seals and bearings meaning that the unit provides long life while minimising maintenance overheads. The pumps are designed to handle high pressure throughout their flow range with hot oil pumps operating up to 360 psi and hot water pumps up to 450 psi.
Both SPX FLOW CombiTherm Plus hot oil and hot water pumps use a balanced single mechanical seal that is easy to position and assemble for straight forward maintenance. To prevent the grease from being washed out of the ball bearings, in case of a mechanical seal failure, the bearings are protected with two separate seals and an open drain. To prevent wear on the shaft, the out-board seal of the quench chamber is running on a hardened shaft sleeve and the ball bearing area is sealed using contact-less seals. The use of a journal bearing cartridge makes maintenance and replacement exceptionally easy. The CombiTherm Plus hot oil pump has an open quench system with visual level indication and optional remote leakage detection. The hot water model comes with a steam eliminator on the seal chamber.