Class / Patent application number | Description | Number of patent applications / Date published |
137527000 | Pivoted valves | 64 |
20080236680 | PASSIVE VALVE FOR ATTENUATION OF LOW FREQUENCY NOISE - A passive valve assembly for an exhaust system is mounted within an exhaust tube. The exhaust tube has a bore that defines an exhaust flow path having a cross-sectional area. One end of the exhaust tube is to be connected to a first exhaust component and a second end of the exhaust tube is to be connected to a second exhaust component such that the exhaust tube forms a sole exhaust path between the first and the second exhaust components. The passive valve assembly includes a vane that is mounted within the bore, and which is moveable between an open position and a closed position. A resilient member biases the vane toward the closed position. When the vane is in the closed position, the vane covers 80% to 97% of the cross-sectional area. | 10-02-2008 |
20080257426 | INTEGRAL HINGE - A valve is provided. The valve may include a housing defining a cavity. A first end of the housing may define an opening configured to be closed by a flapper door. The valve may further include a hinge formed integrally with the housing. The hinge may extend from an upper portion of the housing and be configured to receive the flapper door. In an embodiment, at least a portion of the hinge extends beyond the opening. The hinge may provide a pivot point for the flapper door that is at or above the opening of the housing. | 10-23-2008 |
20080271792 | Water guide for dishwasher - A water guide of a dishwasher checks the flow of water draining from the dishwasher. The water guide includes a drain passage having one end communicating with an outer atmosphere and another end communicating with a sump for receiving washing water, at least part of the drain passage being routed via a point higher than a water level in the sump, and a valve assembly, disposed above the drain passage, for selectively introducing external air into the drain passage. | 11-06-2008 |
20090032118 | CHECK VALVES WITH HINGE SHAFTS RETAINED BY BUSHINGS - Methods and apparatus are provided for retaining a hinge shaft of a check valve with a bushing. The check valve includes a valve body defining a flow passage therethrough; a hinge shaft; a bushing coupling the hinge shaft to the valve body; a pin secured to the valve body and engaging the bushing; and a closure element pivotally mounted on the hinge shaft for opening and closing the flow passage. | 02-05-2009 |
20090032119 | CHECK VALVES WITH HINGE SHAFTS RETAINED BY WELDING - Methods and apparatus are provided for retaining a hinge shaft of a check valve with a bushing. The check valve includes a valve body defining a flow passage therethrough; a hinge shaft; a bushing coupled to the valve body and welded to the hinge shaft; and a closure element pivotally mounted on the hinge shaft for opening and closing the flow passage. | 02-05-2009 |
20090032120 | CHECK VALVES WITH HINGE SHAFTS RETAINED BY LOCKING PINS - A check valve includes a valve body defining a flow passage therethrough; a hinge shaft mounted on the valve body; a closure element pivotally mounted on the hinge shaft for opening and closing the flow passage; and a pin secured to the valve body and received by the hinge shaft. | 02-05-2009 |
20090056818 | CHECK VALVES WITH NOISE REDUCER - A check valve includes a valve body, a flapper, and a seat region. The valve body has an upstream side, a downstream side, and a first valve flow channel that extends between the upstream and downstream sides. The flapper is rotationally mounted on the valve body, and is movable between a closed position and an open position. When in the closed position, the flapper at least substantially closes the first valve flow channel. When in the open position, the flapper at least substantially opens the first valve flow channel. The seat region is formed in the valve body, and is configured to seat the flapper and make contact therewith when the flapper is in the closed position. The seat region comprises an elastomer material. | 03-05-2009 |
20090071552 | Backflow preventing apparatus for water closets - An automatically activated backflow prevention device for water closets or toilets is provided having a substantially cylindrical support member terminating in one end in a cam shaped end for mating with a hinged flapper valve having a parabolic shaped or upwardly curving upper surface and correspondingly shaped sealing member disposed therebetween for mating with the cam shaped end of the substantially cylindrical support member. An elastomeric hinge member is provided for connecting the closure member or flapper valve to the substantially cylindrical support member so that when closed the flapper valve or closure member conforms to the confronting cam shaped end of the cylindrical support member with the sealing member disposed therebetween. | 03-19-2009 |
20090183788 | Regulator unit and method for regulating a flap opening of a flap situated in a mass flow line - A regulator unit for regulating a flap opening of a flap arranged in a mass flow line includes: an analyzer unit which is designed for providing an analysis signal on the basis of a predefined desired pressure difference and a difference between pressures upstream and downstream from the flap; a regulator which is designed for determining a trigger signal from the analysis signal according to a regulating characteristic; and a control element-regulating unit which is designed for regulating the flap opening of the flap in the mass flow line in response to the trigger signal. | 07-23-2009 |
20100018593 | CHECK VALVE MECHANISM FOR RODENTS AND/OR ODORS - A check valve mechanism for use with a vertical drain pipe comprises a connector portion for supporting the check valve mechanism with respect to the drain pipe, and two flaps, each being an ungula of a cylindrical tube. The flaps are pivotally connected to the connector portion, so as to be displaceable between a closed position in which the flaps are against one another such that peripheral portions of the flaps are collinear at a connection line to obstruct the drain pipe, and an opened position, in which the flaps are away from one another to allow liquids/solids to pass through the check valve mechanism and the flaps. | 01-28-2010 |
20100032029 | RADIAL FLOW OSCILLATING VALVE FOR RECIPROCATING COMPRESSORS AND PUMPS - The invention provides a unique self actuating oscillating valve and suggests means to control flow. | 02-11-2010 |
20100078083 | LOW PROFILE BACKWATER VALVE - A low profile backwater valve includes a hollow valve body having an inlet, an outlet, and a bottom. A pivoting valve member is pivotally movable between a normally open position along the bottom of the valve body and a closed position sealing the inlet. The valve member has a hinge end, a remote end, and opposed sides. A float is positioned as an appendage along at least one of the opposed sides of the valve member, such that the float adds buoyancy to the valve member causing the valve member to float into the closed position in the presence of a backflow. | 04-01-2010 |
20100096027 | CHECK VALVE AND PUMP INCLUDING CHECK VALVE - A check valve includes a tubular valve seat frame, a valve seat that is fixedly secured to the inside of the valve seat frame and has a communication hole through which a working fluid flows, and a valve body that is on the working fluid outflow side of the valve seat for opening and closing the valve seat. The valve seat frame, the valve seat, and the valve body are put into one unit so that the check valve has a simple structure and a good assembly property, and can be manufactured at low cost. The check valve is included, whereby a small, durable, and high-performance pump can be provided. | 04-22-2010 |
20100163122 | FLOW CONTROL VALVE - A flow control valve ( | 07-01-2010 |
20100243083 | PRESSURE RELIEF ASSEMBLY - Embodiments of the present invention provide a pressure relief assembly that may include a main housing having an air passage chamber, and a flapper positioned on or within the air passage chamber. The flapper includes a membrane flap and a stabilizing member extending toward a center of the membrane flap. The stabilizing member prevents the center of said membrane flap from flapping open, but allows outer free edges of the membrane flap to open when air flow at a particular pressure is exerted into said membrane flap from an opening direction. | 09-30-2010 |
20100263743 | SNAP ACTION VALVE WITH BUMPER PAD - A rotary valve plate adapted for housing within a conduit employs a vibration absorbing bumper pad coupled to the valve plate at a surface thereof adapted to contact an inner surface of the conduit whenever the valve plate is rotated to a closed position. The bumper pad minimizes vibratory noise and improves the durability of the valve plate over extended periods of operation. | 10-21-2010 |
20100276015 | Groundwater control system with automatic water flow regulator - An automatic water flow regulator apparatus and a system for controlling and regulating the level of groundwater in an agricultural field. An automatic flow regulator adapted for use in a buried tile line that responds to conditions upstream and downstream along the line in order to regulate flow. A system having a tile line buried in a field for draining water therefrom, a preferably manually operated terminal control stand positioned at the discharge end of the system, and one or more automatic water flow regulators along the line for controlling the flow of water therethrough in conjunction with said terminal control stand. | 11-04-2010 |
20100326544 | Shock responsive check valve - This disclosure is directed to an earthquake or shock responsive swing check valve, shutting off water in an earthquake. The device utilizes a common swing check valve whereby the internal parts are machined and retrofitted to be responsive to shock. The reacting parts are the valve door and a magnet. Thus the valve door is provided with a circular steel plate fastened connectably to the door. The magnet is positioned outside the valve and above the valve door, making a magnetic attraction between valve door and magnet, thereby keeping the valve door in open position. Upon a shock or earthquake, the magnetic attraction between the door and magnet is broken, shutting off the water supply. The device can be reset to open position with a simple screwdriver. | 12-30-2010 |
20110041930 | PRESSURE RELIEF VALVE - An apparatus ( | 02-24-2011 |
20110061751 | Tilting Disc Swing Check Valve - A Tilting Disc Swing Check Valve that allows liquid to flow only in single direction is disclosed herein. The valve opens when liquid flows. When the flow stops, weight of valve's closing mechanism will swing back to close position and halt backflow. The closing mechanism of Tilting Disc Swing Check Valve is a part of swinging disc, attached by a hinge, and set at the slant angle to provide quick closing and reduces water hammer. Its hinge pin axis could be placed either vertically and horizontally. The Tilting Disc Swing Check Valve is recommended to be installed adjacent to a pump in order to prevent the pump's damage cause by liquid's backflow, and when the pump needs to be shut down for maintenance. | 03-17-2011 |
20110308644 | AIR INTAKE MODULATOR AND METHOD OF USING - An air flow modulating device comprising a flapper, a mount and a conduit. The conduit may be T-shaped and may be attached to an intake conduit of a sealed combustion condensing appliance, or other appliance having an air intake conduit, through a first portion of T-shaped conduit. The mount may be connected to a second portion of T-shaped conduit and the flapper may rotate between an open position and a closed position about an axle of the mount. The device operates to allow for a sealed combustion condensing appliance to immediately intake interior air when an exterior air source is obstructed, limited or reduced, or in response to changes in air pressure due to uncontrollable natural forces. | 12-22-2011 |
20120012202 | Irregularly Shaped Flapper Closure and Sealing Surfaces - A flapper valve for a surface controlled, sub-surface safety valve has a seat and a curved flapper. The seat has a seating rim, and the curved flapper has a sealing rim and can pivot relative to the seat. The flapper's sealing rim corresponds in shape to the seating rim. Both rims have lobes disposed outside a circular perimeter. Also, the undulating edges of the rims have corresponding outcroppings and incroppings. When a flow tube moves towards or away from the flapper, the flapper's lobes protect the flapper's sealing rim as the flapper's inside surface engages the moving flow tube. Moreover, the rims can have a groove and a ridge that engage one another when the rims close. | 01-19-2012 |
20120042968 | METAL PLATE FOR DUAL PLATE CHECK VALVE - A metal plate ( | 02-23-2012 |
20120132299 | Check Valve - The invention relates to a check valve for blocking a fluid-carrying line in case of reversal of the flow direction, containing a valve housing defining a flow path and having two connecting pieces and a valve seat therebetween, and a flap module mounted in the valve housing and containing a shut-off body interacting with the valve seat, a bearing device for pivotably supporting the shut-off body such that the latter is movable between an open position and a closed position, and a lever extending between the shut-off body and the bearing device and being connected to the shut-off body and the bearing device. For easier manufacturing, the invention proposes that a part of the flap module is formed by at least one sheet-metal shaped part. | 05-31-2012 |
20120160348 | HIGH-TEMPERATURE JOINTED ASSEMBLIES AND WEAR-RESISTANT COATING SYSTEMS THEREFOR - Wear-resistant coating systems suitable for protecting surfaces subjected to contact wear at high temperatures, such as surfaces of an assembly comprising high-temperature components of gas turbine engines. The components have surfaces in wear contact with each other. One of the surfaces has a wear-resistant coating system thereon so as to be in wear contact with the surface of the other component. The wear-resistant coating system contains alternating layers of TiAlN and CrN. | 06-28-2012 |
20120234408 | CHECK VALVE WITH AXIAL THRUST ELEMENT - A split flapper check valve includes one or more additional bushing/bearing surface areas for controlling check valve flapper position along the axis of the hinge pin. This is accomplished by adding one or more grounded bushings between the flappers. The one or more grounded bushings is/are non-rotationally coupled to the hinge pin, and thus grounded to the check valve housing, so that the flappers can bear against this additional surface. The additional bearing area has the effect of increasing the axial bearing surface area according to the number of additional ground lugs that are used, without increasing the diameter of the flapper lugs. | 09-20-2012 |
20120241028 | NON-RETURN VALVE ASSEMBLY OF THE PIVOTING FLAP TYPE, TYPICALLY FOR INSERTION IN FLOOR DRAINS - A valve assembly ( | 09-27-2012 |
20120279586 | UNPOWERED APPARATUS FOR PREVENTING BACKFLOW - The present invention relates to an unpowered apparatus for preventing backflow, comprising: a tubular main body having a stepped portion, wherein the main body has an inlet port for the inflow of sewage, an outlet port for discharging the sewage, and a communication port which is inclined toward the outlet port and which puts the inlet port and the outlet port in communication; an opening/shutting door having a door body rotatably hinged to the inside of the main body so as to open/shut the communication port, and a pair of blocking plates extending from either side of the door body so as to block the space between the stepped portion and an inner wall of the main body; a floating part which is arranged in the opening/shutting door, the interior of which is empty such that the floating part can float on a water surface, and which provides the opening/shutting door with buoyancy and operates the opening/shutting door so as to close the communication port when the sewage flows back toward the outlet port; and a guide interposed between the stepped portion and a bottom surface of the main body so as to guide the sewage introduced from the inlet port such that the sewage flows toward the outlet port via the communication port. | 11-08-2012 |
20130019966 | DUAL PLATE CHECK VALVE - A check valve in which a stop pin assembly is situated so as to prevent the movement of a flapper beyond a predetermined position. In a preferred embodiment the check valve has two flappers with the stop pin assembly situated therebetween to prevent either one of them from pivoting beyond an essentially vertical position. The stop pin assembly is configured such that it can be inserted and locked in place when the check valve is inserted within a valve body that contains the check valve. The stop pin assembly can comprise three elements including a central portion and first and second end portions, although the stop pin assembly could instead comprise a single element. The stop pin assembly is inserted between two holders and in a preferred embodiment is rotatable to a locking position where it is affixed in place by fasteners. | 01-24-2013 |
20130061957 | CHECK VALVE - A check valve system including a plumbing assembly and a check valve assembly. The plumbing assembly has at least three portals including a first portal, a second portal and a third portal. The check valve assembly is positioned to block a fluid flow entering the second portal from flowing out of the first portal. The check valve assembly includes a securing mechanism positioned in the third portal. | 03-14-2013 |
20130206256 | BIASED SWING CHECK VALVE - The disclosure relates to a check valve having a housing, a connector mounted inside the housing, a flapper joined to the connector, and a biasing member joined to the connector at one end and joined to the flapper proximate another end. The biasing member is internal to the housing, and includes a compression spring. | 08-15-2013 |
20130228242 | CONTROLLED ISOLATION VALVE HAVING REINFORCED SEALING - An isolation valve including a mechanism for reinforcing closure. The valve includes a seat against which a flap valve member is fitted in a closed position, and a locking finger presents movement defined by a control mechanism configured to press the finger against the valve member in the closed position. | 09-05-2013 |
20130240059 | Variable resistance device - A variable resistance device, suitable for pressure reduction in fluid control systems, comprising a housing with a pair of perforated tubes motivated to slide against each other in order to vary the amount of flow area exposed in such perforations, and wherein a cam and lever system causes sliding motion of one of the tubes. | 09-19-2013 |
20130333776 | CONDENSATE REMOVAL PUMP HAVING IMPROVED CHECK VALVE - A check valve is provided that includes a body defining a flow path between an upstream side and a downstream side. A pivot pin is disposed within the body in the flow path, and includes a longitudinal shaft and one or more bearings rotatably coupled along at least a portion of the shaft. The check valve also includes at least one valve plate rotatably coupled with at least one of the one or more bearings to regulate fluid flow through the check valve. | 12-19-2013 |
20140083531 | VALVES - Valves, and particularly check valves, are detailed. The valves may isolate a spring or other biasing member from flowing fluid so as to reduce the possibility of damage to the spring caused, for example, by chemicals contained in the fluid. In some versions of the valves, the spring may be positioned within a cavity of a cover sealed from the fluid. | 03-27-2014 |
20140311595 | FLAPPER RELIEF VALVE - A pressure relief valve is provided including a flapper pivotally mounted to a housing. The flapper is movable between a first position and a second position. A protrusion extends from a first surface of the flapper. A biasing mechanism is positioned near a first end of the flapper. The biasing mechanism is configured to apply a biasing force to the first surface of the flapper. A non-rotatable pin is arranged generally parallel to the first end of the flapper. A drag link is configured to pivot about the non-rotatable pin. The drag link includes a retaining feature and is substantially aligned with the protrusion on the flapper. When the flapper rotates to the second position, the retaining feature is configured to engage the protrusion to retain the flapper in the second position. | 10-23-2014 |
20150013789 | FLUID CIRCULATION VALVE - The invention relates to a valve ( | 01-15-2015 |
20150027566 | VALVE DEVICE FOR EXHAUST GAS FLOW PATH - A valve device includes a butterfly valve and a first link member each supported by a stay so as to be rotationally movable about a first rotation axis and a second rotation axis, respectively, a second link member supported by the butterfly valve so as to be rotationally movable about a third rotation axis, and a spring to bias the butterfly valve in a valve closed direction. The first link member and the second link member are connected to each other so as to be mutually rotationally movable about a fourth rotation axis. An angle formed by a first link line connecting the second rotation axis and the fourth rotation axis to each other and a second link line connecting the third rotation axis and the fourth rotation axis to each other is formed to be the largest when the butterfly valve is in a valve closed state. | 01-29-2015 |
20150059881 | Triple Offset Butterfly Pressure Relief Valve - A pressure relief valve in a triple offset butterfly valve configuration. It has a body, pallet, pallet assembly and closure mechanism with a lever arm providing mechanical advantage upon a cam which aids in the closing of the valve. The valve relies upon a shear pin which can be machined to alter the opening pressure of the valve. The pallet is secured to the pallet assembly by a plurality of adjustment fasteners and retainer fasteners which can be adjusted to provide an effective seal on the valve. A valve seal has one or more layers of graphite and metal. A pallet seal is captured in a groove in the pallet which restricts radial movement of the pallet seal. The valve seal is captured between a retainer and the pallet seal. | 03-05-2015 |
20160040793 | CHECK VALVE WITH BACKBONE ENHANCED PETALS - A check valve includes a base, two sidewalls extending from the base and a pin coupled between the two sidewalls. The valve also includes a flapper pivotably coupled to the pin to occupy respective open and closed positions in accordance with a pressure differential of a fluid flow across the check valve, the flapper including a plate and a backbone that is thicker than the base and the extends along an entire length of the plate. | 02-11-2016 |
20160040794 | CHECK VALVES - A check valve comprises a valve body defining a valve opening and a pair of valve elements mounted so as to be movable from a closed position in which they close the valve opening to prevent fluid flow through the opening to an open position in which they permit fluid flow through the opening. The valve further comprises a one piece bridge element having first and second end portions mounted to the valve housing on opposite sides of the valve opening and an intermediate portion extending between the end portions. The intermediate portion acts as a stop for the valve elements in their open position. A shaft mounting the valve elements for pivotal movement between their open and closed positions, is supported in the end portions of the bridge element. Fasteners for attaching the bridge element to the valve housing overlap the ends of the valve shaft thereby retaining it in the bridge element. | 02-11-2016 |
20160053904 | TILTING DISC CHECK VALVE - The invention discloses a tilting disc check valve, which includes a left valve body ( | 02-25-2016 |
20160084393 | ANTI-FLUTTER CHECK VALVE - A check valve includes a housing, a hinge pin connected to the housing, and a flap with a cam surface having stability points, the flap rotatably connected to the hinge pin. The check valve further includes a stop pin connected to the housing, a spring mounted on the stop pin, the spring having an arm, and a detent element mounted on the arm of the spring. The spring urges the detent element to be in contact with the cam surface and the flap is stable when the detent element is located at one of the plurality of stability points. | 03-24-2016 |
20160102770 | VALVE STRUCTURE - A valve member | 04-14-2016 |
20160123240 | Spring Biased Exhaust Valve Assembly - An exhaust valve assembly comprises a housing having a central axis. A ram assembly moves along a shaft fixed inside a hollow interior of the housing. Downstream movement of the ram assembly increases the size of the valve opening, allowing additional exhaust gases to pass through the interior of the housing. Springs maintain the ram assembly in a position in which exhaust gases may pass around the ram assembly. Sufficient force on the ram assembly from exhaust gases compresses at least one spring allowing the ram assembly to move downstream, thereby allowing additional exhaust gases to pass through the interior of the housing. | 05-05-2016 |
20160146361 | CHECK VALVES - A check valve comprises a valve housing defining a valve opening. A pair of mounting posts is arranged on opposite sides of the opening. A pair of flapper elements is pivotably mounted for rotation between an open position and a closed position. The flapper elements are mounted to hinge pins mounted to respective mounting posts. A base portion of the hinge pins is formed with a sleeve having a bore which is slidably mounted on a hinge pin mounting portion of a respective mounting post. | 05-26-2016 |
20160146362 | CHECK VALVES - A check valve comprises a valve housing defining a valve opening and a pair of posts arranged on opposed sides of the valve opening. A hinge pin is mounted between the posts. A pair of flapper elements are pivotally mounted to the hinge pin for rotation between a closed position in which they close the valve opening to prevent fluid flow through the opening, and an open position in which they permit fluid flow through the opening. The check valve further comprises a unitary element having at least one washer portion received on the hinge pin and at least one stop portion for forming a stop for engaging the flapper elements in their open position. | 05-26-2016 |
20160169405 | DIFFERENTIAL CONTROL VALVE | 06-16-2016 |
20160201814 | AIR ADMITTANCE VALVE PREVENTING MEPHITIS OVERFLOW | 07-14-2016 |
20170234441 | CLAPPER VALVE | 08-17-2017 |
137527200 | Head retained by removable closure | 2 |
20100313972 | Check Valve For A Self-Priming Pump - A check valve of the flapper type structured for use in a self-primer pump is structured for attachment to the pump casing in a manner that facilitates servicing of the check valve, and includes securement means that are positioned external to the casing and a flapper that is located through an opening of the casing in a manner that enables the servicing of the valve without dropping the flapper or the hardware into the interior of the pump. | 12-16-2010 |
20140345714 | Quick Maintenance Undersea Check Valve - The present invention aims at simplifying maintenance, mounting and disassembly operations which are required with valves, and in particular with check valves. Thus, the present invention proposes a solution according to which the closing element ( | 11-27-2014 |
137527400 | Valve head movably connected for accommodation to seat | 1 |
20100263744 | Flowline Flapper Valve - A check valve assembly has a body having a central cavity intersected by upstream and downstream flow passages. A seat is secured by a threaded engagement in the upstream flow passage. An access bore intersects the cavity and has a support shoulder formed in it. A holder is supported on the support shoulder. A flapper is pivotally secured to the holder and located in the cavity for movement between an open position and a closed position blocking flow through the seat. A straight edge portion in the access bore engages a straight edge portion of the holder to prevent rotation of the holder. A fastener extends through a hole in the support shoulder into engagement with the seat to prevent rotation of the seat. | 10-21-2010 |
137527600 | Valve mounted on end of pipe | 4 |
20110290349 | Non-Return Valve Adapter For Water Closet - A non-return valve unit for insertion into a substantially horizontal waste water pipe comprises a horizontal tubular portion ( | 12-01-2011 |
20140305523 | Intake pipe for gas of an internal combustion engine with a flap unit - An intake pipe for intake gas of an internal combustion engine has an intake pipe channel and a flap unit with a flap shaft and a flap fixedly arranged on the flap shaft. The flap unit alternatingly opens or closes the intake pipe channel. A hollow insert body is disposed in the intake pipe channel, wherein the flap unit is arranged in the insert body and the flap is positioned in a hollow interior of the insert body. The insert body has opposite end faces and the opposite end faces are open. The flap shaft extends through opposite walls of the insert body in a radial direction relative to an insert body axis of the insert body. The insert body is rotatable on the flap shaft. A radial inner circumferential side of the insert body widens toward at least one of the open end faces. | 10-16-2014 |
20140345715 | TRICKLE VALVE ASSEMBLY AND A METHOD OF SUPPLYING PARTICULATE MATERIAL THROUGH SUCH TRICKLE VALVE ASSEMBLY - The present invention concerns a trickle valve assembly for supplying particulate material exiting the bottom of a separating cyclone, comprising a separating cyclone outlet conduit having a bottom end with an inclined valve seat and a pivotable valve plate assembly with a valve plate pivoting about a valve hinge and a counter-weight on the opposite side of said valve hinge, wherein the outlet conduit is provided with at least one gas inlet above the inclined valve seat which is in fluid communication with a supply of pressurised gas, such as a pressurised air supply. | 11-27-2014 |
20140345716 | FLOW-LIMITING DEVICE - A flow-limiting device comprises a stationary portion and a mobile valve comprising an orifice. The mobile valve is kept closed by a forced closure system that enables the mobile valve to limit the flow of a fluid passing through same and opens same to allow a larger flow to pass through when the upstream pressure of the fluid becomes higher than a predetermined value. The orifice of the flow-limiting device can be positioned at the bottom or the periphery of the mobile valve. The forced closing system can comprise at least one spring attached to the stationary portion at one end and to the mobile valve at the other end. | 11-27-2014 |
137527800 | Weight biased | 7 |
20080196775 | VALVE FLAP FOR A PLUMBING VALVE - A valve flap for a plumbing valve, includes a body having a first face, a second face, a top and a bottom. A pivotal mounting is provided in the vicinity of the top. A curved lower snake deflecting contact face is provided in the vicinity of the bottom, adapted to facilitate sliding contact with a plumbing snake. This valve flap enables a plumbing snake to be inserted into and withdrawn from the plumbing valve. | 08-21-2008 |
20130118612 | CLACK VALVE ASSEMBLY - A clack valve assembly comprising: a valve seat comprising an opening; a bearing comprising a recess with a base, a mouth, and a pair of side walls between the base and the mouth; a lid comprising a lid plate and a shaft, the shaft being received in the recess of the bearing; and a shaft retaining member which closes the mouth of the recess in the bearing, thus retaining the shaft within the recess. The shaft and the lid plate are integrally formed elements of a single part. The shaft can rotate within the recess to enable the lid to rotate from a closed position in which the lid engages the valve seat and covers the opening, to an open position in which the lid lifts away from the valve seat enabling fluid to flow through the opening in the valve seat. | 05-16-2013 |
20130233412 | Wafer Check Valve Assembly And Related Methods Of Use - Improved flow control assemblies for fluid systems (e.g., industrial and/or commercial systems) are provided. More particularly, the present disclosure provides for advantageous wafer check valve assemblies for fluid systems (e.g., piping systems or the like). The present disclosure provides for advantageous wafer check valve assemblies that include an angled sealing surface, which allows the disc member to seal even with the valve assembly in the horizontal position, and/or to seal without the aid of a spring. Improved, convenient, low-cost and/or effective systems and methods for utilizing improved wafer check valve assemblies in fluid systems (e.g., piping systems or the like) are provided. | 09-12-2013 |
20140053923 | Apparatus and Methods for Limiting or Preventing Backflow of Gas up Through a Plumbing Fixture - Apparatus useful for allowing the flow of liquid down through a pluming fixture to a destination below it and limiting or preventing the backflow of gas from the destination up into the pluming fixture includes a frame and a disc pivotably connected thereto. The disc is biased in a closed position and pivotably moveable into an open position upon the application of sufficient forces acting on the upper surface thereof caused by fluid from the plumbing fixture. | 02-27-2014 |
20140060673 | Valve Insert - An insert is provided for insertion through an opening in the surface of a conduit, the insert comprising an insert body having first and second open ends defining an axis of flow therebetween. The insert further comprises a valve flap connected to the insert body. The valve flap is movable between a closed position in which it creates a closure, thereby preventing flow along said axis, and an open position in which the valve flap allows flow along the axis. The valve flap is arranged so that, when in the open position, it is substantially U-shaped in side cross-section and is oriented with respect to the insert body so that said U-shape arches over the axis of flow. | 03-06-2014 |
20140261789 | BACKWATER VALVE ASSEMBLY AND METHOD - The present disclosure is directed to a backwater valve assembly comprising a main valve body, a flapper sub-assembly, and a cap. The main valve body has an inner wall that can define a recess into which the flapper sub-assembly can be removably secured. The flapper sub-assembly includes at least one flapper element that can pivot between an open position, in which the flapper element allows fluid to flow through the backwater valve assembly, and a closed position, in which the flapper element prevents fluid from flowing in the opposite direction. The flapper sub-assembly can be removably coupled to the cap to allow the flapper sub-assembly and cap to be installed in or removed from the main valve body together as a unitary assembly. | 09-18-2014 |
20150330524 | COMPOSITE INJECTION MOLDED CHECK VALVE WITH INTEGRATED FEATURES - A check valve includes a valve body, a pair of stoppers, a hinge pin, and one or more flappers. The valve body includes an inlet end, an outlet end, and an inner surface that defines a flow passage between the inlet end and the outlet end. The inner surface further defines a valve seat adjacent the inlet end. The stoppers are integrally formed on the valve body inner surface, and each has a first end and a second end. The hinge pin is disposed within each hinge pin opening and extends across the flow passage. The flappers are disposed within the flow passage and are rotationally mounted on the hinge pin. Each of the one or more flappers is rotatable between a closed position, in which the flapper engages the valve seat, and a full-open position, in which the flapper engages the pair of stoppers. | 11-19-2015 |