MRO Magazine

Pump Torque Limiter Saves On Energy

Parker Hannifin has introduced an optional torque limiter for 45-cc/rev to 140-cc/rev model P1/PD series pumps, allowing the use of smaller prime movers, resulting in more efficient use of fuel or ele...


April 1, 2009
By MRO Magazine

Parker Hannifin has introduced an optional torque limiter for 45-cc/rev to 140-cc/rev model P1/PD series pumps, allowing the use of smaller prime movers, resulting in more efficient use of fuel or electricity. The torque limiter adjusts flow in the circuit to keep the prime mover from stalling under heavy loads. To accomplish this, the device’s control monitors both pressure and displacement as measured by the pump’s hanger angle. It is a single spring unit that works with the Parker compensator, a ventable pressure limiter or a load sensing or remote venting circuit. As pressure rises, flow is reduced according to the zero adjustment spring rate of the torque limiter. When pressure has risen to its full value, the compensator assumes control.

Parker Hannifin


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