Abstract: Guide vane check valves, guide vane check valve assemblies, and poppets for guide vane check valve assemblies are disclosed. A guide vane poppet includes an elongate central core configured to form a fluid seal with a valve body of the check valve assembly. The guide vane poppet additionally includes an elongate outer skirt and at least one guide vane radially extending between the elongate central core and the elongate outer skirt. A check valve assembly includes a valve body with a central cavity, an inlet to the central cavity, an outlet from the central cavity, and a spring seat, and further includes a spring and a poppet. The spring is oriented to press against the poppet and to urge a poppet-side sealing surface of the poppet into sealing engagement with a body-side sealing surface of the valve body.

Abstract: A flood prevention device comprising a first solenoid valve, an input on the first solenoid valve designed to attach to and receive fluid flow from a mainline water or gas source; a wiring harness to electrically connect the first solenoid valve to an appliance control unit, and a first supply hose, with a first end attached to an output of the first solenoid valve and a second end designed to attach to and deliver fluid to an appliance.

Abstract: A check valve comprises a valve housing defining a valve opening and a pair of flapper elements pivotably mounted relative to the housing for rotation between an open position in which they permit fluid flow through the opening and a closed position in which they prevent fluid flow through the opening. Each flapper element comprises a first surface facing the opening and a second surface opposite the first surface and facing away from the opening. The valve further comprises a bowed leaf spring member mounted to the second surface of each flapper element. The leaf spring members are arranged such that when the flapper elements move towards the closed position, the bowed leaf spring members move into engagement with one another.

Abstract: The present invention relates to a pressure-reducing valve (1) having a valve housing (2), in the housing interior of which is provided a valve carrier (4) which has at least one through-flow channel (5), and having a pot-shaped valve body (3) which is guided displaceably from an open position into a closed position in opposition to a restoring force, in which closed position the valve body (3) abuts by way of the circumferential edge (6) of its pot shape in such a manner against a valve seat (7), which is provided on the valve carrier (4), that the valve body (3) closes at least one channel opening (8) of the at least one through-flow channel (5).

Abstract: Provided is a relief valve with an inlet, and outlet, and a backside of a poppet fluidly connected to an input pressure to increasingly close the poppet as a function of input pressure until a prescribed pressure condition is reached. Upon the prescribed pressure condition being reached, the relief valve decreases pressure on the backside of the poppet to open the poppet and allow fluid flow from the inlet to the outlet. Increasingly closing the poppet allows the relief valve to operate under high pressure conditions and repeatedly open and close to reliable seal without significant leakage after thousands of cycles.

Abstract: A faucet having a faucet base, a water hose, a faucet head, and a chamber is provided. A water valve is provided in the chamber and includes a driving member and a control valve movable between a first position enabling mixing of water and air and a second position enabling shut-off of a water flow. The faucet head further includes a control member rotatably coupled with the faucet head to enable a user to operate the control valve within the water valve by operating the control member from a side of the faucet head.

Abstract: The present invention concerns a sealing system particularly for industrial safety valves, even more particularly for industrial gate valves. Hence, the subject of the present invention is both a sealing system (1) suited to be used on a gate valve and a gate valve comprising such a sealing system (1). The system according to the present invention allows to combine the advantages in terms of simplicity and cost-effectiveness for manufacturing gate valves provided with a traditional sealing system, with further advantages in terms of performance both at high and at low operating pressures and reducing the torques required to handle the slab, also ensuring the operation of the valve itself with unaltered sealing performance over time, even under particular and demanding operating conditions.

Abstract: A bypass plunger combines a unitary or one-piece hollow body-and-valve cage, retains a dart valve within the valve cage portion of the hollow body using a threaded retaining nut secured by crimple detents. A series of helical grooves surround the central portion of the outer surface of the hollow body of the plunger to control spin during descent. A canted-coil-spring disposed within the retaining nut functions as a clutch. The valve cage includes ports that may be configured to control flow through the plunger during ascent. Other embodiments include clutch assemblies using canted-coil springs with split bobbins, and valve stems surfaced to achieve specific functions. Combinations of these features provide enhanced performance, durability and reliability at reduced manufacturing cost, due primarily to the simplicity of its design.

Abstract: A touch faucet contains: a body, a temperature control valve, a water control valve, and an actuation member. The body includes an inlet segment, an outlet segment, and a first cavity which has a first hole. The temperature control valve is housed in the first cavity and includes a water inflow portion configured to flow cold water and hot water, a mixing chamber in which the cold water and the hot water are mixed to form a mixing water, and a water outflow portion configured to flow the mix water. The water control valve includes an operation post touched to turn on the water control valve, such that the mixing water flows into the water outflow portion from the mixing chamber, and the actuation member partially exposes outside the body so as to be operated by a user to drive the operation post to move.

Abstract: A spring adjusting device and a valve assembly including the same. The spring adjusting device includes an adjusting screw rod, a spring, and a spring seat which is located between the adjusting screw rod and the spring. A groove is arranged in the spring seat, which can contain an end part of one end of the adjusting screw rod, and is provided with a cylindrical side wall. The spring adjusting device can prevent the end part of the adjusting screw rod from being separated from the groove, and the spring from being bent on the whole, thereby improving the overall working performance of the valve assembly.

Abstract: A releasable valved coupler and a method of producing and using such a coupler including a coupler body having a first valve element and a coupler insert having a second valve element, wherein a first valve tip of the first valve element can engage a second valve tip of the second valve element upon insertion of the coupler insert inside of a tubular chamber of the coupler body, whereby the first valve element disengages a first valve seat and the second valve element disengages a second valve seat to open a flow path through the coupler. By moving the coupler body and the coupler insert in outward opposed axial directions, the first and second valve tips can disengage, correspondingly engaging the first valve element with the first valve seat and engaging the second valve element with the second valve seat to close the flow path through the coupler.

Abstract: Exemplary embodiments are directed to a rotary selector valve that includes a valve body that includes a rotor and a stator. The stator includes a first port for flow of a first flow material and a second port for flow of a second flow material. The rotor includes a groove for flow of at least one of the first flow material and the second flow material. The rotor includes a vent groove disposed between the first port and the second port for venting at least a portion of at least one of the first flow material and the second flow material to an exterior of the valve body. Exemplary methods of operating a rotary selector valve and CO2-based chromatography flow systems including a rotary selector valve are also provided.

Abstract: The present flow rate safety valve comprises a valve body, a valve seat, a valve core and a spring. The valve core is an open cylinder. A sealing washer is set up on the front end of the valve core. Part of the rim of the sealing washer contacts the inner wall of the valve body, forming a seal and guiding the valve core in the axial direction of the valve body. A projecting sealing part is arranged on the valve seat, and the inner wall at the rear end of the valve core is a conical surface which extends from the rear end face to the middle part of the valve core and forms a guide for the conical sealing part. Inside an outflow pipe of the valve body, a backflow preventer is arranged in order to prevent the medium backflow.

Abstract: A touch spray head is removably connected on an outlet of a faucet body and contains: a casing, a fixing cylinder, a water valve, and a manual operation. The casing includes a surrounding fence, an accommodation space, and a through hole. The fixing cylinder is housed in the accommodation space and includes an inlet segment communicating with the outlet, an outlet segment, at least one first orifice defined between the inlet segment and the outlet segment, and a receiving zone. The water valve is accommodated in the fixing cylinder and includes an operation bar touched to movably turn on the water valve. The manual operation device is housed in the receiving zone and the through hole, and the manual operation device includes a driving portion formed in the through hole so as to be driven by a user to actuate the operation bar to move.

Abstract: A sealing member, whose unique manner of movement provides an improvement to a quick-connect valve assembly, for fluid control. A coupling force, required to couple the quick-connect valve assembly containing the improvements, is substantially reduced, resulting in an improvement to a typical quick-connect valve assembly (prior-art). The quick-connect valve assembly is comprised of at least a male coupler, a female coupler and a sealing member. During the resultant coupling of the quick-connect assembly, the sealing member, is firstly moved, in a rotational manner and then secondly, if desired, in a more typical translational manner. Multiple options for implementation of these improvements are available utilizing typical quick-connect valve components. The implementation options include; individual component replacement, upgrading of prior-art components or introduction of new components. All implementation options provide the improvement of a substantially reduced coupling force.

Abstract: A check valve is provided which comprises a casing having a fluid passage, a valve seat member disposed in the fluid passage, and a valve element housing with a valve element disposed therein. The valve seat member has a valve seat surface on an end surface facing downstream. The valve element housing is a discrete member separate from the valve seat member and detachably secured to a downstream end portion of the same. The valve element is displaceable between a closed position and an open position.

Abstract: A check valve comprises a valve housing defining a valve opening and a web extending across the valve opening. First and second mounting posts are provided on the valve housing on opposite sides of the opening and extend away from the opening. Each mounting post has a transverse bore formed therein.

Abstract: A sensor-operated pull-out faucet can include a spout having a hose disposed therein, a pull-out spray head fluidly coupled to the hose and configured to dock at an end of the spout, and a sensor assembly disposed at least partially in the spout proximate the end of the spout. The sensor assembly can include a sensor and a shutter disposed adjacent the sensor. The shutter can be operable to obscure the sensor in a closed state and expose the sensor in an open state. The faucet can also include a control unit communicatively coupled to the sensor and configured to control fluid flow through the hose and the pull-out spray head based on control signals generated by the sensor.

Abstract: The faucet includes a detector including: a frequency analyzer to convert a sensor signal into a frequency domain signal, and extract, by use of a group of individual filter banks with different frequency bands, signals of the individual filter banks from the frequency domain signal; a recognizer; and a database device, for storing sample data. The recognizer performs a recognition process of detecting a detection object based on detection data containing a frequency distribution of signals based on the signals of the individual filter banks. The recognizer performs the recognition process based on comparison between the detection data and the sample data.

Abstract: A pressure control valve has a housing including a valve seat and defining a fluid path therein, a valve body including a support member and a valve member, and a spring biasing the valve body toward the valve seat in a valve closing direction. The valve member is an integrated molding including a seal member and a reinforcement member that reinforces the seal member. The seal member is made from a rubber-like elastic material and includes a seal portion that is configured to be seated on the valve seat. The reinforcement member is engaged with the support member without using a separate member such as adhesive.