The present invention is a wireless electronic control device, primarily intended to be attached to the impulse valve of a Hydraulic Ram Pump (HRP), enabling remote automatic and manual management of the HRP. The Electronic Ram Pump Controller (ERPC) may be used to control the HRP, through the restriction of the fluids entering/or exiting the pump. In the presented form, the Impulse Valve Manager (IVM), attaches to an impulse valve and restricts, to a varying degree, the aperture size of the impulse valve. Through this control mechanism the HRP may be sealed, started, or tunedeither remotely by a user or automatically through the ERPC's automated systems. The presented version can be augmented with valve actuation and sensing of the impulse cycle. The ERPC may be retrofitted or incorporated into the design of a new HRP.

The present application includes a compressor having a cylinder forming a compression chamber in which gas is compressed, a housing having a peripheral wall forming an internal space in which the compressor is stored, and a supporting member situated above the compressor in the internal space. The peripheral wall includes an opening wall in which a carry-out port is formed through which the cylinder is carried out. The supporting member extends to guide movement of a first lifting device between a position above the compressor and a position above the carry-out port. The cylinder is hung from the first lifting device.

A pump fluid end having a reciprocating element a discharge valve assembly, a suction valve assembly, and a suction valve stop. The reciprocating element is disposed at least partially within a reciprocating element bore of the pump fluid end. The suction valve assembly is coupled with a front end of the reciprocating element. The suction valve stop is positioned within the reciprocating element bore such that the suction valve stop contacts and applies a closing force to the suction valve assembly when the suction valve assembly is stuck open at the end of a discharge stroke of the reciprocating element.

A stuck-pump prevention device includes: a pump; a recovery-liquid generator coupled to a fuel tank and generating a recovery liquid by cooling evaporative fuel generated in the fuel tank and condensing and recovering a low-boiling component included in the evaporative fuel; a first pipe allowing a discharge port of the recovery-liquid generator and a recovery-liquid inlet of the pump to communicate with each other; a first on-off valve that opens and closes the discharge port of the recovery-liquid generator; a second on-off valve that opens and closes the recovery-liquid inlet of the pump; and a control unit that opens and closes the on-off valves and controls driving of the pump. When a predetermined cleaning-control execution condition is satisfied, the control unit executes cleaning control involving opening the on-off valves and driving the pump to cause the recovery liquid to be taken into the pump through the first pipe.