Abstract: A coupling to connect pipe, including lengths of pipe, valves, hoses, and pipe and hose fittings, includes a body to closely receive the end portion of the pipe to be coupled and jaw members to secure the pipe to be coupled in the coupling. The coupling includes an internal groove extending at least partially around the pipe end portion when received in the coupling. The jaw members are mounted to the coupling body to establish a fulcrum for rotation of each lever jaw member about the fulcrum between an engaged position and a disengaged position with respect to the pipe end portion when received in the coupling body. At least a portion of the jaw members are positioned in the coupling internal groove. Additionally or alternately, jaw members may be provided adapted to slide along the inner groove in the coupling body to move between a position spaced radially from the received pipe to allow the pipe to move into or out of the coupling body and a position securing the pipe in the coupling body.

Abstract: A flow control and pressure reducing valve having a polygonic valve body with an inlet chamber and an outlet chamber partitioned by a partition plate. A plurality of passages are formed through receptacles around the partition plate, with the inlet portion opening into the inlet chamber and the outlet portion opening into the outlet chamber. Elastomeric flow control means having the shape of flat hat are positioned inside the receptacles to block the passage of fluid when charged with pressurized fluid, and to unblock the passage of fluid when the pressurized fluid is discharged from said flow control means.

Abstract: A coupling to connect pipe, including lengths of pipe, valves, hoses, and pipe and hose fittings, includes a body to closely receive the end portion of the pipe to be coupled and jaw members to secure the pipe to be coupled in the coupling. The coupling includes an internal groove extending at least partially around the pipe end portion when received in the coupling. The jaw members are mounted to the coupling body to establish a fulcrum for rotation of each lever jaw member about the fulcrum between an engaged position and a disengaged position with respect to the pipe end portion when received in the coupling body. At least a portion of the jaw members are positioned in the coupling internal groove. Additionally or alternately, jaw members may be provided adapted to slide along the inner groove in the coupling body to move between a position spaced radially from the received pipe to allow the pipe to move into or out of the coupling body and a position securing the pipe in the coupling body.

Abstract: A coupling to connect pipe, including lengths of pipe, valves, hoses, and pipe and hose fittings, includes a body to closely receive the end portion of the pipe to be coupled and jaw members to secure the pipe to be coupled in the coupling. The jaw members of the coupling may include a set of first class lever jaw members having a power arm and a weight arm mounted to the coupling body to establish a fulcrum for rotation of each lever jaw member about the fulcrum between an engaged position and a disengaged position with respect to the pipe end portion when received in the coupling body. Additionally or alternately, jaw members may be provided adapted to slide along the inner groove in the coupling body to move between a position spaced radially from the received pipe to allow the pipe to move into or out of the coupling body and a position securing the pipe in the coupling body. An insert may be provided to lock the jaw members in position.

Abstract: A free floating diaphragm flow control valve includes concentric inner and outer bodies, where a partition plate divides the inner body into two equal inlet and outlet chambers. A cylindrical cavity, concentric with the inner and outer cylindrical bodies, provides space for a sheet diaphragm looping around a seat provided by the inner cylindrical body. The doubled up ends of the sheet diaphragm are held together by a tie assembly which has an integral bolt stem held that is shared with an actuator, which actuator, working in tandem with the pipe line's pressurized fluid around the diaphragm, can actuate the diaphragm's tied up ends, to open or close the diaphragm around its seat to control the fluid flow through the valve.

Abstract: A coupling for attachment to the end portion of a pipe includes jaw members adapted to slide along an inner end taper in the coupling body so that linear movement of the jaw members toward the end of the inner end taper adjacent an end of the coupling body causes movement of the jaw members radially inwardly of the coupling body against the end portion of the pipe when received in the coupling body. The coupling may include a bell type gasket to function as a spring and the spring action of the gasket may be augmented by installing a springy crib ring around the gasket inside the coupling body.

Abstract: A coupling to connect pipe, including lengths of pipe, valves, hoses, and pipe and hose fittings, includes a body to closely receive the end portion of the pipe to be coupled. The coupling may include a set of first class lever jaw members each having a power arm and a weight arm mounted to the coupling body to establish a fulcrum for rotation of each lever jaw member about the fulcrum between an engaged position and a disengaged position with respect to the pipe end portion when received in the coupling body.

Abstract: A coupling to connect pipe, including lengths of pipe, valves, hoses, and pipe and hose fittings, includes a body to closely receive the end portion of the pipe to be coupled. A set of first class lever jaw members each having a power arm and a weight arm are mounted to the coupling body to establish a fulcrum for rotation of each lever jaw member about the fulcrum between an engaged position and a disengaged position with respect to the pipe end portion when received in the coupling body. The weight arms may include a gripping surface such as a rubber or plastic material or gripping teeth to grip a smooth end portion of a pipe, or the end portion of the pipe may include a shoulder, such as formed by a groove in the end portion, so the weight arms engage the shoulder to secure the pipe in the coupling.