DEVICE TO DETERMINE DELIVERY OF OIL PUMPS AND VALVE OPENING PRESSURE Russian patent published in 2008 - IPC F15B19/00 

FIELD: mechanical engineering.

SUBSTANCE: invention is designed for revealing condition of oil pumps and valves at servicing. Proposed device contains cylindrical housing provided with round inlet and outlet holes, restrictor arranged in housing, restrictor adjuster, working liquid pressure meter at housing input, working liquid flow rate indicator and pointer. Bushing is mounted on housing by means of threaded joint to provide possibility of its axial displacement together with plunger at their simultaneous rotation around longitudinal axis of plunger, with provision of value of indicated axial displacement of not less than diameter of inlet hole of housing. Scale is made along spiral. Free end face of plunger is made in form of plane perpendicular to longitudinal axis of plunger. Restrictor hole consists of two rectangular sections, narrow and wide, spaced along longitudinal axis of sleeve. Longitudinal axis of restrictor hole is aligned with diameter of inlet hole of housing at equal length of restrictor hole and said diameter.

EFFECT: facilitated manufacture, improved accuracy of measuring.

6 cl, 5 dwg