Abstract: Disclosed is a device for sensing the opening degree of a valve, which can easily determine the upper and lower limits without using upper and lower limit switches so that, besides simplifying the mechanical structure, the device can be easily installed, maintained, and repaired. The device can avoid basic errors and improve the opening degree sensing performance without using upper and lower limit switches, cams, and a spline so that, by simplifying the mechanical structure, the device can be manufactured, installed, maintained, and repaired at a low cost, and its long-term durability is improved. The device has a main gear adapted to disengage from the meter gear when the main gear is rotated excessively so that any damage to the meter gear and potentiometer, which may occur during installation or use, is prevented.

Abstract: A vacuum suction system comprises a work conveyor table 2 having work receiving openings 5, and a table base 3 having vacuum suction channels 7 which communicate with the work receiving openings 5 of the conveyor table 2. The work receiving openings 5 and the vacuum suction channels 7 communicate with a vacuum generation source 17 via a vacuum pipe 9. A negative pressure sensor 10 is disposed on the vacuum pipe 9. Based on a signal from the negative pressure sensor 10, a compressed air generation source 20 supplies a compressed air to the vacuum pipe 9 and thereby stabilizes the vacuum level in the vacuum pipe 9.

Abstract: A steam trap includes an inverted bucket in a bucket chamber. The bucket has a vent hole formed in an upper portion thereof. The vent hole is formed along a vent hole axis, which may be angled so that the bucket rotates from the venting propulsion. The chamber has an outlet orifice formed in a sidewall thereof. There is a spaced vertical distance between the outlet orifice and an upper interior surface of the chamber. Preferably, the bucket is not attached to the chamber and configured to move vertically and horizontally in the bucket chamber, but not flip over. The bucket and the interior sidewalls of the chamber are configured so that the bucket can substantially cover the outlet orifice when the bucket is pulled against the interior sidewall at the location of the outlet orifice by a flow of fluid out of the outlet orifice.

Abstract: Disclosed is a method of controlling the flow rate of clustering fluid using a pressure type flow rate control device in which the flow rate Q of gas passing through an orifice is computed as K=KP1 (where K is a constant) with the gas being in a state where the ratio P2/P1 between the gas pressure P1 on the upstream side of the orifice and the gas pressure P2 on the downstream side of the orifice is held at a value not higher than the critical pressure ratio of the gas wherein the association of molecules is dissociated either by heating the pressure type flow rate control device to the temperature higher than 40° C., or by applying the diluting gas to the clustering fluid to make it lower than a partial pressure so the clustering fluid is permitted to pass through the orifice in a monomolecular state.

Abstract: The present invention is directed toward an apparatus for efficient, durable, reliable, and cost-effective fluid injection. In particular, the present invention provides an unpowered device for automatic fluid injection dictated by pressure differential in the line. More specifically, the present invention provides a device for injecting a degreasing chemical into air relief valves in municipal wastewater systems, which operates off of the differential pressure in the pumped lines resulting from the pump operating cycles.

Abstract: A riser system for use at the access opening of a wastewater treatment tank includes an adaptor ring affixed to the top of the tank, and a mating riser. The adaptor ring and riser have ends with mating circumferential L-shape sections. There are horizontally projecting tabs spaced apart around the upper end of the adaptor. The tabs engage a corresponding number of L-shape slots which are spaced apart around the circumference of the bottom end of the riser. When ring and riser are mated, rotation of the riser relative to the adaptor causes each tab to move circumferentially to a recess in the slot, which locks the tab in position. Micro-ridges on horizontal mating surfaces of the L-shape sections help form a seal between the two parts.

Abstract: Low-profile garden hose storage apparatus comprises a housing adapted for mounting onto an exterior wall of a building to store a garden hose having first and second ends and an outer diameter ‘d’. A reel, rotatable in the housing, has a central hub and a pair of plates spaced apart at a distance of 1, 2 or 3d. In the preferred embodiment the plates are spaced apart at a distance slightly greater than d such that a single layer of hose may be wound thereon in a ‘pancake’ configuration. A water inlet is coupled to the hub through a swivel fitting, enabling the reel to rotate as water is delivered. The first end of the garden hose is coupled to the hub of the reel between the plates, with the second end of the garden hose extending through an opening in the housing. The apparatus further includes a mechanism for automatically winding the garden hose onto the reel between the plates, thereby retracting the hose into the housing through the opening thereof.

Abstract: An elbow fluid flow valve exhibiting reduced flow loss and including a body having a specified shape and size and defining a short radius associated with an elbow shaped fluid passageway characterized by a first fluid flow inlet and a second fluid flow outlet. A cover secures over the valve body, and such that a generally sleeve shaped annulus is defined therebetween. A light-weight and linearly translatable sleeve is mounted exteriorly of the valve body and within the intermediately defined annulus. The sleeve is operable to be displaced between a first location permitting fluid flow to the outlet and a second location interrupting fluid flow. A control element is operably connected to a pair of access ports, in turn communicated with one or a pair of interior regions in communication with locations of the displaceable sleeve and, upon experiencing at least one of a pressure and flow disparity between valve inlet and outlet, facilitates displacement of the sleeve to the second (flow interrupting) location.

Abstract: A control valve for a faucet includes a valve housing, a hollow valve seat, two sealing gaskets, at least one water outlet channel, a rotation plate, a control unit, two mounting seats, a fixed sleeve, and a movable sleeve. Thus, the movable sleeve is movable in the fixed sleeve to control the water flow rate of the mixed cold and hot water to the optimum value to regulate and stabilize the water pressure automatically so as to provide a pressure balance effect so that the mixed water flowing from the water outlet channel is kept at a constant temperature, thereby providing a comfortable sensation to a user.

Abstract: A mass flow controller arranged to perform mass flow test operation in the controller itself by incorporating a test tank. The mass flow controller is provided, in a channel (6) for feeding fluid, with a means (8) for detecting the mass flow rate of fluid flowing through the channel and outputting a flow rate signal, and a mechanism (10) for controlling the mass flow rate by varying the valve opening by a valve drive signal.

Abstract: A check valve assembly which in an open position allows liquid to flow in one direction through the assembly including a moving sealing member which engages a seal to prevent liquid flow in a second opposite direction. The sealing member may be moved into engagement with the seal by rotation of a stem with an eccentric to block flow in both directions. A check valve and shut-off device assembly which in an open position allows liquid to flow in one direction through the assembly until gas or foam is mixed with the liquid. The shut-off device includes a sealing member which engages a seal to block flow through the assembly when foam or gas is present in the liquid. The check valve includes a sealing member which can reset the shut-off device. The check valve sealing member also engages the same sealing member to prevent any flow through the assembly in a closed position. In an open position, the check valve sealing member may engage the seal to prevent reverse flow of liquid through the assembly.

Abstract: A cutoff valve having an upstream valve part and a downstream valve part which are assembled in series in a flow passage. Each of the valve elements at the valve parts are formed separably stacking a large diameter first valve element and a small diameter second valve element on each other. The first valve element is formed of elastic material and the second valve element is formed of rigid material. A valve shaft is passed through the center of the first valve element, and the tip of the valve shaft is connected to the second valve element. A first valve element moving component which moves the center part of the first valve element in a direction apart from the second valve element in the state of being engaged with the first valve element when the valve is opened is installed between the first valve element and the valve shaft.

Abstract: The invention relates to a re-configured valve design to accommodate a high volume of product in the delivery system and the dispensation of product upon the application of a predetermined vacuum condition on the downstream side of the valve.

Abstract: A mechanism to check fluid flow from a tube or spigot when it is disconnected from a downstream conduit is provided. The mechanism includes a duckbill check valve that has its bills pointed in the upstream direction. To keep the bills apart for the fluid flow to continue, the downstream conduit has to be inserted against the underside of the bills. Once the downstream conduit separates from the valve, the valve closes itself.

Abstract: An on-board refueling vapor recovery system includes a shutoff mechanism that closes a first vapor path between the fuel tank and the filler cup when liquid fuel in the tank reaches a predetermined level and a vent line closure that closes a second vapor path between the canister and the filler cup, wherein closure of the first vapor path and the second vapor path reduces pressure in the filler cup to induce shutoff of a fuel nozzle.

Abstract: An application for a living-hinge air vent valve connectable to a sewer conduit includes a base and a cover sealed to the base forming a cavity between the cover and the base. A fluid inlet shaft depends from a roof of the base and is connected to external air passages passing through a side of the base and through vents in a side of the cover. A living-hinge flapper is situated above the fluid inlet shaft and within the cavity. The living-hinge flapper allows air to flow from the fluid inlet shaft into the cavity and prevents sewerage gasses from flowing from the cavity out through the fluid inlet shaft. One or more connecting shafts in the base fluidly connect the cavity with a sewer system.

Abstract: A system for maintaining pressure in the liquid fuel tank of a high-speed flight vehicle, such as a hypersonic flight, scramjet powered air and space vehicle, manages tank ullage using a pressure regulator coupled to the fuel tank that supplies pressurized gaseous media into the fuel tank ullage based on the internal pressure of the tank. The regulator has an on-board controller that processes tank pressure input to deliver a pulse-width modulated input signal to the coil of the on-board solenoid metering assembly. Energizing the coil drives the metering valve open against spring force. The metering assembly is contained in a removable cartridge that has a floating valve guide that is held stationary by bias of the spring against the metering valve. The metering valve has a separate valve seat that mates with the metering orifice of a flow nozzle.

Abstract: A valve drive device includes a valve element for opening or closing the inflow port or the outflow port, a drive mechanism for driving the valve element, an abutting part which is provided in any operation member included between the drive mechanism and the valve element, and a restriction part for restricting rotation of the valve element by abutting with the abutting part. The valve element is rotated by the drive mechanism so that the inflow port or the outflow port is opened or closed, and one of the abutting part and the restriction part is formed of an elastic member.

Abstract: A system configured to distribute liquid flow into predetermined proportions is provided. The system includes a distributor defining a plurality of distributor outlets configured to deliver liquid from the distributor. A receptacle is positioned to receive liquid, the receptacle defining a plurality of receptacle outlets oriented to deliver liquid portions toward the distributor outlets. The receptacle is selfleveling such that liquid is divided by the receptacle outlets into predetermined proportions.

Abstract: The present invention prevents substantial reduction of flow rate control accuracy in a small flow quantity range, achieves accurate flow rate control over the entire range of flow rate control, and also allows control of a wide pressure range of a chamber with accurate flow rate control. Specifically, a gas supply facility having a plurality of pressure type flow controllers connected in parallel, and a third controller to control operation of the pressure type flow controllers to supply a desired gas exhausted by a vacuum pump to a chamber while controlling its flow rate, is provided wherein one pressure type flow controller is a controller used to control a gas flow rate range up to 10% of the maximum flow rate supplied to the chamber, while the remaining pressure type flow controllers are made to be ones controlling the rest of the gas flow rate range.