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| Number | Title | Issue Date |
| 8123197 | Ethylene production isolation valve systems The present invention provides more efficient, cost effective ethylene productions isolation valve devices and system as well as more efficient, cost effective methods for isolating the flow of matter from one location to another in an ethylene productions operation... | 02/28/2012 |
| 7950625 | Shut-off fitting A shut-off instrument for a flow medium, in particular a slide valve instrument designed for pressurization on both sides with an instrument housing forming a flow channel and a slide valve chamber and with a soft-sealing shut-off element closing off the flow channe... | 05/31/2011 |
| 7448595 | Shut-off fitting A shut-off instrument for a flow medium, in particular a slide valve instrument designed for pressurization on both sides with an instrument housing forming a flow channel and a slide valve chamber and with a soft-sealing shut-off element closing off the flow channe... | 11/11/2008 |
| 7422653 | Single-sided inflatable vertical slit valve A vacuum chamber having a gate valve including a chamber housing defining an internal vacuum region and first and second openings through the chamber housing and a gate valve secured to the chamber housing. The gate valve includes a sealing door located in the proce... | 09/09/2008 |
| 7377758 | Fluid pump A pump comprising a piston in communication with a valve chamber provided with a first valve seat and a second valve seat, and a resilient valve element comprising a first tapered portion, a second tapered portion and a flange portion extending from a periphery of t... | 05/27/2008 |
| 7354026 | Unitary blade seal for a shearing blind ram in a ram type blowout preventer A unitary blade seal for a shearing blind ram of a ram-type blowout preventer is disclosed and includes an elongate member having a generally semi-circular cross section with a curved upper surface and a lower surface. The lower surface has a pair of laterally exten... | 04/08/2008 |
| 7350766 | Knife gate valve with multi-piece elastomer liner and/or o-rings at flange interface A knife gate valve comprising a two-piece valve body, a knife gate, an elastomeric transverse seal, an elastomeric perimeter seal, and a pair of elastomer liners. Each elastomer liner is positioned between the knife gate and one of the mating valve body halves and d... | 04/01/2008 |
| 7341238 | Device for locking out a pressurized storage container and method for the same A device and method for locking out an explosion suppressor that includes a discharge valve with a load end and a discharge end. The load end and the discharge end define a discharge path therethrough. The discharge valve includes a side opening transverse of the di... | 03/11/2008 |
| 7325783 | Valve seat edge relief profile A valve seat has an outer surface, a rearward end, a face and a forward end. A passage extends from the rearward end to the face. A valve element slidingly contacts the face. Stress relief flanges are located on the face in areas of high bearing stress. Each flange ... | 02/05/2008 |
| 7306201 | Gate valve with tongue and groove or bridging seal to annular seat elements A gate valve for controlling fluid flow, in which a valve body forms a cylindrical flowbore and includes a gate cavity intersecting the flowbore to provide opposed openings into the flowbore. Seat pockets are formed in the opposed openings, each with a radial base a... | 12/11/2007 |
| 7296783 | Vacuum processing apparatus An inexpensive and reliable vacuum processing apparatus is provided. The vacuum processing apparatus comprises a sealed gate located between two vacuum vessels for allowing them to communicate with each other and a sample subjected to processing to be transferred fr... | 11/20/2007 |
| 7255329 | Gate valve with offset valve stem An improved gate valve has a main body defining a flow passage, and a cylindrical gate member, which has a continuous seal disposed within a groove in the gate surface. The gate is actuated by a valve stem movable through a bonnet connected to the main body, with th... | 08/14/2007 |
| 7255328 | Low friction coatings for dynamically engaging load bearing surfaces A gate valve has a body, the body having a cavity and a flow passage intersecting the cavity. A seat ring is mounted to the body at the intersection of the flow passage and the cavity, the seat ring having an engaging face. A gate in the cavity has an engaging face ... | 08/14/2007 |
| 7249750 | Pressure balanced fluid control device The present invention is directed to a pressure balanced fluid control device. In one illustrative embodiment, the device comprises a body, a bonnet coupled to the body, a valve stem operatively coupled to a gate positioned in the body, a valve stem seal positioned ... | 07/31/2007 |
| 7246637 | Balanced valve A balanced valve for controlling the flow of fluids in conduits, the valve comprising: (a) a casing formed of sidewalls and a casing top and bottom, defining an interior; (b) a fluid inlet in a sidewall of the casing and a fluid outlet in an opposite sidewall of sai... | 07/24/2007 |
| 7243903 | Valve diaphragm with a compression restraining ring, and valve including same A valve has a body, a bonnet, an actuator mechanism, and a flexible diaphragm adapted to be positioned between the bonnet and the body. The flexible diaphragm has a central portion and a peripheral portion, and the central portion is covered with a thin alloy layer.... | 07/17/2007 |
| 7243713 | Shear/seal ram assembly for a ram-type blowout prevention system An improved shear/seal ram assembly used in ram-type BOPs is disclosed. The disclosed invention is a unique shear/seal ram assembly in which rail seal actuators attached to or integrally formed in a planar surface of one shear blade mate with and slide within corres... | 07/17/2007 |
| 7234679 | Gate valve A gate valve has a transfer chamber-side valve element and a process chamber-side valve element connected to a single shaft. A rotary latch pivotably supported on an inner surface of one of the valve element with the rotary latch having a latch surface at a forward ... | 06/26/2007 |
| 7225827 | Insertion valve and installation method A valve assembly for insertion in a pipe containing fluid under pressure includes a valve body adapted to be assembled over the pipe and a valve-stopping mechanism that mounts on the valve body. The hollow valve body interior and an access opening in the valve body ... | 06/05/2007 |
| 7114702 | Slide valve In a slide valve, especially for coating installations, for fluidic separation of two modules or chambers, interconnected through an opening, containing at least one slide plate, integrated in a housing transfixed by said opening, and which may be bidirectionally mo... | 10/03/2006 |
| 7100893 | Gate valve A gate valve having a polymeric monolithic liner, the liner having cylindrical flange portions projecting from either side to form a fluid passageway through the liner, first and second housing portions forming a liner cavity, the liner being disposed in the liner c... | 09/05/2006 |
| 7093819 | Ball valve with shear bushing and integral bracket for stem blowout protection A valve 100 comprising a one piece valve body 112 having an axial fluid bore 124 and a rotatable fluid control element 110. The body 112 includes an integral bracket 128 which provides an open access area between the bracket... | 08/22/2006 |
| 7073776 | Sluicing valve device A sluicing valve device in which a valve element is arranged in case members attachable to a pipe, and the valve element comprises a valve element core metal fitting, an elastic seal member covering the same, and a lifting and lowering shaft formed into a rod shape ... | 07/11/2006 |
| 7059586 | Knife gate valve having elastomeric gate and chest seals A gate seal for a knife gate valve comprising a sealing surface lining the gate channel and an integral gasket for compression between valve body halves, a chest seal for a knife gate valve comprising a body having an expandable sealing surface and one or more injec... | 06/13/2006 |
| 7040337 | Valve override system A valve override system for allowing a user to restore flow through a gate valve that has failed in the closed position. The valve override system includes an engagement assembly being designed for engaging a gate of the gate valve assembly whereby the engagement as... | 05/09/2006 |
| 7017886 | Sliding gate valve A sliding gate valve, a sealing gasket for the valve, and a method of assembling the valve that may be used to govern the flow of a fluid such as a liquid or a gas. The sealing gasket may be characterized as having a circular portion, two connector portions, and a s... | 03/28/2006 |
| 7011294 | Vacuum valve A vacuum valve comprises a valve housing with a valve opening having a longitudinal axis and a valve seat, a valve plate which is displaceable in a straight line in a displacement direction between an open position in which it releases the valve opening and a closed... | 03/14/2006 |
| 7004452 | Valve seal assemblies and methods A method of sealing a valve engaging member to a valve body about a borehole and structure thereof. Two seal members disposed on either side of the valve engaging member include a seat member adjacent the valve engaging member and a pocket insert adjacent the seat m... | 02/28/2006 |
| 7000899 | Shutoff device A shutoff device for shutting off liquids or gases comprises a device housing (10) and a device (13) movable in said housing (10), the device (13) being provided with an opening (14). For sealing purposes, annular sealing bodies ( | 02/21/2006 |
| 6997041 | Dual slide gate valve and method for using same A method and device for pressure testing a pipe line is provided wherein a fitting is inserted into the pipeline by inserting male ends of the pipeline into female ends of the fitting to define a flow path through the fitting extending along a longitudinal axis. The... | 02/14/2006 |
| 6978980 | Slide valve closure for the casting of a metal melt and a refractory plate unit belonging to it In a slide valve closure for the casting of a metal melt a slider plate and a stationary closure part are braced against each other by means of spring units or by other means. There is provided a casing framework attachable to a mould or the like, in which is fixed ... | 12/27/2005 |
| 6966538 | Gate valve A gate valve has a valve rod equipped with a valve plate having a pair of valve plate surfaces, wherein the valve rod is tilted by an actuator to thereby effect highly reliable valve opening/closing operation with a simple construction. In the gate valve, the valve ... | 11/22/2005 |
| 6959912 | Injectable packing unit in a single knife gate body A knife gate valve is provided, comprising: a unitary valve body having a flow channel extending there through, a guide segment and a stuffing box. A knife gate is located in the guide segment, the stuffing box and the flow channel and is slideable between an open a... | 11/01/2005 |
| 6959908 | Gate valve flexible wedge A flexible wedge has a pair of pressure retaining plates and a central wedge body therebetween. The pressure retaining plates have inclined seating surfaces on opposed outer faces thereof for mating with corresponding valve seats within the valve body to prevent sub... | 11/01/2005 |
| 6957659 | Sliding disk valve for pneumatic conveyance of abrasive material A linear actuated disk valve for a fluid conveyance system constructed with a valve body having an internal chamber and a passage through the valve body, the valve body having opposite ends with external connectors that continue the passage and that are connectable ... | 10/25/2005 |
| 6957816 | Loop seal for knife gate valve A seal for use with a knife gate valve is disclosed, the seal having a loop to which is attached an axially facing sealing lobe. A sealing surface is positioned on the sealing lobe, the sealing surface having an axially projecting leading edge and flanking annular s... | 10/25/2005 |
| 6942194 | Gate valve The invention relates to a gate valve with a housing, having an inlet and an outlet, between which a flow area is arranged, with a sealing insert in the flow area and a sliding element cooperating with a contact area of the sealing insert in the closed state. In a g... | 09/13/2005 |
| 6929244 | Interference-fit seal for gate valves A gate valve has seat rings pressed into counterbores to form seals. Each counterbore is located at an intersection of a flow passage with a central cavity of a body of the gate valve. The counterbore has a cylindrical constant diameter sidewall. The seat ring has a... | 08/16/2005 |
| 6923423 | Small bore gate valve A gate valve comprises a valve body, a stem bore which extends through the valve body, a stem which is disposed in the stem bore and which includes a first stem portion that is sealed to the stem bore, a second, smaller diameter stem portion that is sealed to the st... | 08/02/2005 |
| 6918574 | Reduced torque gate valve with roller screw A gate valve is disclosed which comprises a valve body which includes a flow bore that extends completely therethrough and a gate cavity that extends partially therethrough and intersects the flow bore, a bonnet which is connected to the valve body over the gate cav... | 07/19/2005 |
