The manual pumps prd - 13 are supplied for centralized
lubrication system with oil where volumetric metering
units are used. The pumps assembly are located on
the bottom of the reservoir and the vertical lever comes
back by means of a spring. Before to use again the
vertical lever has to be awaited minimum 15/20 seconds
to have a correct working of the system. The pumps are
provided with a set of valves which carries out priming,
releasing and relieving. They are provided with suction
strainer and strainer filler cup.