Abstract: A hydraulic control valve actuated by a diaphragm's integral spring whose thicker part acts with greater force to close the diaphragm and plug unit of the valve and whose thinner part may complete the closing motion so that the integral spring may weaken faster than linearly in relation to displacement of the diaphragm and plug unit. A snap seat supporting the plug may include a seat portion and a grip skirt portion integrally joined at an acute angle. A bracket and sliding guide may guide a helical rotor touching an indicator. Movement of the diaphragm and plug unit may rotate the helical rotor and the indicator without the indicator rising out of the valve. The cover may have an internal control passage in communication with a base of the valve to allow the cover to be installed horizontally and vertically conveniently and without disconnecting the control tubing above the valve.

Abstract: A hydraulic control valve actuated by a diaphragm's integral spring whose thicker part acts with greater force to close the diaphragm and plug unit of the valve and whose thinner part may complete the closing motion so that the integral spring may weaken faster than linearly in relation to displacement of the diaphragm and plug unit. A snap seat supporting the plug may include a seat portion and a grip skirt portion integrally joined at an acute angle. A bracket and sliding guide may guide a helical rotor touching an indicator. Movement of the diaphragm and plug unit may rotate the helical rotor and the indicator without the indicator rising out of the valve. The cover may have an internal control passage in communication with a base of the valve to allow the cover to be installed horizontally and vertically conveniently and without disconnecting the control tubing above the valve.

Abstract: An air release vent valve having a valve body with an inlet port and a venting orifice; a direct float configured with an axial passageway; and a displaceable orifice closure rod deployed in at least a portion of the axial passageway, the displaceable orifice closure rod being longitudinally displaceable therein, wherein at least of portion of the displaceable orifice closure rod extends above the direct float and at least a portion of the displaceable orifice closure rod is configured to close the venting orifice when the water level in the valve body reaches a predetermined level. Also disclosed is a suspended surge prevention element that is suspended within the valve body at an adjustable distance from the venting orifice and configured to seal the initial vent orifice in response to a velocity of the flow of air through the valve body.

Abstract: Disclosed are a method and device for modulating the downstream pressure output of a pressure reducing hydraulic control valve in response to the flow demand fluctuation the method comprising. Included is an adjustable pressure pilot valve mechanism having a drive element extending from the control valve. The drive element is displaceable in response to a flow capacity through the hydraulic control valve. Also included is an adjustable pressure pilot valve deployed along a control tube connecting an upstream pressure port to a downstream pressure port, the adjustable pressure pilot valve associated with the drive element such that adjustable settings of the adjustable pressure pilot valve are responsive to displacement of the drive element.

Abstract: A hydraulic control valve actuated by a diaphragm's integral spring whose thicker part acts with greater force to close the diaphragm and plug unit of the valve and whose thinner part may complete the closing motion so that the integral spring may weaken faster than linearly in relation to displacement of the diaphragm and plug unit. A snap seat supporting the plug may include a seat portion and a grip skirt portion integrally joined at an acute angle. A bracket and sliding guide may guide a helical rotor touching an indicator. Movement of the diaphragm and plug unit may rotate the helical rotor and the indicator without the indicator rising out of the valve. The cover may have an internal control passage in communication with a base of the valve to allow the cover to be installed horizontally and vertically conveniently and without disconnecting the control tubing above the valve.

Abstract: A standpipe float valve having a standpipe housing having an inlet port and an outlet port, a valve plug deployed within the standpipe housing, the valve plug configured to regulate a flow of fluid into the standpipe housing and a float element deployed within the standpipe housing and reactive to a fluid level in the standpipe housing, the float element attached to the valve plug and configured to actuate the valve plug, wherein the standpipe housing has a substantially cylindrical interior volume, the valve plug has a substantially cylindrical outer face and an outside diameter of the valve plug is substantially equal to an inside diameter of the cylindrical interior volume of the standpipe housing such that the valve plug is slidingly displaceable within the standpipe housing between an open position, in which fluid flows through the inlet port into the standpipe housing and a closed position in which fluid flow through the inlet valve is blocked.

Abstract: The pressure differential metering device of the present invention is generally deployed as a flow restrictor placed in the valve inlet so it will create a desired differential pressure to signal a pilot valve, for example, that drives the main valve to limit the flow rate through the valve. The pressure differential metering device of the present invention is deployed across the valve inlet port, with its central axis perpendicular to the direction of fluid flow. The flow restriction element of the present invention may be configured in a variety of sizes to create a desired restrictive cross section to the flow, thereby creating the required differential pressure signals for the valve instrumentation and control. The flow restriction element is configured with upstream and downstream apertures that are the openings to passageways to the corresponding upstream and downstream end-ports. The end-ports provide connection arrangements for the control system of the main valve instrumentation.

Abstract: The pressure differential metering device of the present invention is generally deployed as a flow restrictor placed in the valve inlet so it will create a desired differential pressure to signal a pilot valve, for example, that drives the main valve to limit the flow rate through the valve. The pressure differential metering device of the present invention is deployed across the valve inlet port, with its central axis perpendicular to the direction of fluid flow. The flow restriction element of the present invention may be configured in a variety of sizes to create a desired restrictive cross section to the flow, thereby creating the required differential pressure signals for the valve instrumentation and control. The flow restriction element is configured with upstream and downstream apertures that are the openings to passageways to the corresponding upstream and downstream end-ports. The end-ports provide connection arrangements for the control system of the main valve instrumentation.

Abstract: The standpipe direct float valve of the present invention is configured such that the valve plug is directly connected to the float element and both the valve plug and the float element are deployed within the standpipe housing. The standpipe housing has an inlet port and at least one outlet port. The valve plug is configured to regulate the fluid level, commonly referred to in the art as head, in the standpipe housing by controlling the flow of fluid through the inlet port and into the standpipe housing. The valve plug is deployed within the standpipe housing and is directly connected to, and actuated by, a float element that is deployed within the standpipe housing and reactive to the fluid level in the standpipe housing. Preferably, the valve plug and the float element are integrally formed.

Abstract: The standpipe hydraulic float valve of the present invention employs a mechanical linkage between the float mechanism, which is responsive to changes in the fluid level in the standpipe, and a pilot valve, which regulates a control valve that controls the flow of fluid into the standpipe through its inlet port. Therefore, the mechanical linkage actuates the pilot valve in response to changes in the fluid level in the standpipe so as to provide a substantially continuously variably controlled fluid supply flow into the standpipe housing and thereby maintain a substantially constant fluid level in the standpipe housing so as to maintain a substantially continuous flow pressure into the fluid flow system to which the standpipe hydraulic float valve is connected.

Abstract: A control valve for regulating flow of fluids has an actuator located in a control chamber connected to a valve body. The valve body defines a flow passageway passing through an opening. A plug is associated with the actuator such that movement of the actuator from a retracted position towards an extended position displaces the plug towards the opening. The valve also includes a guide-and-seat insert which provides a valve seat interconnected with an attachment collar via a number of plug guides. When the plug is displaced by the actuator, the plug slides in contact with at least two of the plug guides. When the actuator moves to its extended position, the plug closes against the closure surface of the valve seat so as to block the passage of fluid from an inlet to an outlet of the valve.

Abstract: A control valve for regulating flow of fluids has an actuator located in a control chamber connected to a valve body. The valve body defines a flow passageway passing through an opening. A plug is associated with the actuator such that movement of the actuator from a retracted position towards an extended position displaces the plug towards the opening. The valve also includes a guide-and-seat insert which provides a valve seat interconnected with an attachment collar via a number of plug guides. When the plug is displaced by the actuator, the plug slides in contact with at least two of the plug guides. When the actuator moves to its extended position, the plug closes against the closure surface of the valve seat so as to block the passage of fluid from an inlet to an outlet of the valve.