THE PM MANUAL PUMPS ARE SUPPLIED FOR CENTRALIZED
LUBRICATION SYSTEMS WITH OIL WHERE RESISTANCE METERING UNITS
ARE USED. PRIMING IS CARRIED OUT BY GENTLY UPLIFTING THE
HANDLE AND THE SLOW AND AUTOMATIC RETURN ACTUATED BY
MEANS OF A SPRING DETERMINES THE DELIVERY TO THE SYSTEM. A
QUICK RETURN OF THE HANDLE MEANS THE RESERVOIR IS EMPTY.