The PG (Pressure-compensating) group of governors comprises a variety of pressure-compensating hydraulic governors with linear or rotary output and a capacity range from 12 to 500 ft-lb.

PGDs (PG governors with dial speed setting) and PGLs (PG governors with lever speed setting) control the speed of diesel and dual fuel engines but are most frequently used on turbines. The PGD also facilitates the addition of speeder motors, shutdown and overspeed test device.

PGDs can be used with a variety of drive shaft options in addition to droop facility.