Abstract: The invention provides a unique self actuating oscillating valve and suggests means to control flow.

Abstract: The advantages of plug type unloaders are well know and accepted by authorities such as American Petroleum Association as well as compressor and component manufacturers as well as users. There are further benefits to this device such as eliminating plug to valve misalignment and is lighter than other type unloaders. Field replacement of valve depressor unloaders is economically feasible and any type compressor valve that may be used.

Abstract: The invention provides a unique self actuating oscillating valve and suggests means to control flow.

Abstract: A valve for inlet or outlet of gas and liquid for compressors and pumps comprises a semispherical seal element reciprocating between the stop surfaces and the opposed seating surface. A single spring engages the seal element to bias the seal element toward its seating surfaces.

Abstract: The invention provides a unique self actuating mechanical dual lift control for valves used in reciprocating compressors and pumps. The primary motivation for this concept is the ability to avoid expensive shutdown to change valves when compressor services change. The dual lift valve concept reduces valve power consumption by permitting a secondary lift to increase flow area at or near the peak piston speed. This concept may be retrofitted to some existing valves.

Abstract: A valve for intake or exhaust of gas with respect to a compressor comprises a seating plate and a guard plate releasably attached in opposed relation. The seating plate has a plurality of clusters of holes extending from an outer side of the seating plate thereinto, the holes of each cluster being arranged along a respective circular locus and communicating with respective seating surfaces opening through an inner side of the seating plate. The clusters are non-concentrically spaced from one another about the seating plate. The guard plate defines a respective stop surface generally opposed to but spaced from the seating surfaces associated with each such cluster of holes. The guard plate also has flow passages therethrough from an inner side thereof to an outer side and communicating with the spaces between the stop surfaces and the seating surfaces.

Abstract: A fuel injection valve for an engine comprises a tubular housing having a central throughway. An axially directed valve seat defines an outlet from the throughway. At least one housing fuel inlet communicates the exterior of the housing with the throughway outwardly of the seat. A sealing section outwardly of the housing fuel inlet includes an internal annular enlargement in the central throughway. A housing buffer inlet communicates the exterior of the housing with the enlargement. An inert, nonflammable buffer gas is injected through the housing buffer inlet. A valve stem is mounted for reciprocation in the throughway and has a valve element for cooperation with the seat. First and second annular housing seals are disposed between the valve stem and the housing, respectively inwardly and outwardly of the downstream end of the housing buffer inlet.

Abstract: A rotary gas compressor suitable for heavy duty continuous or intermittent operation with automatic inlet and outlet pressure control valves to reduce power consumption and increase volumetric efficiency. Articulated volume displacers further increase volumetric efficiency, extend life of wearing components and permit infinitely variable capacity control from 0 to 100%. High loads and high speeds are possible due to intrinsic radial load balancing. Additional provisions include replaceable cylinder liners.