The oil industry is currently in need of improved ... Its single stage pumps include standardized pumps, process pumps, circulator pumps, service water pumps and slurry pumps.

Low pressure means there either isn't enough oil in the system or the oil pump isn't circulating enough oil to keep the critical bearing and friction surfaces lubricated. If the light comes on ...

The OCR monitor provided data on oil circulation in the system outside the compressor ... Future tests of the OCR monitor could include a two-staged, cold-climate heat pump system that is being ...

They're replacing freeze-protection circulation pumps with quieter, more energy-efficient models that the city says will save residents around $150 a year. The work will take place on 54 Avenue ...