YUNYI pressure pump calibrator
The hand-operated pressure pump is composed of a handle, a piston rod,a breather,
a pump cover, an oil drain handle, a fine-tuning handle, a meter connector, etc.
Turn the oil drain handle to close the drain valve, and hold the handle of the pressure
pump with your hands. Tightening and relaxation are repeated to drive the piston rod
to reciprocate, and the piston rod reciprocates several times to produce an output pressure
of 0-60Mpa.
