Matches 1 - 50 out of 139 1 2 3 >


Match Document Document Title
8127795 Flue gas diverter damper seal land  
A diverter damper seal land for installation in a flue gas duct defined by a casing wall, the diverter damper seal land includes: a front seal land and a rear seal land, the front seal land is...
7007711 Dispersion nozzle with variable throughput  
The invention relates to a dispersing device wherein the dispersed material has a variable throughput comprising a jet disperser which comprises at least one inlet for the materials to be...
6698444 Freeing of seized valves  
In order to free a seized valve, an inspection port is formed in a wall of the valve body and the areas where the valve is seized are determined. One or more injection ports are formed in the valve...
6675825 Lubricated plug valve  
A plug valve is provided that may be lubricated while in service. The invention provides a high-pressure valve having a valve body containing a plug allowing bi-directional flow and moveable...
6065736 Ball valve having a non-integral upstream seat and at least one integral downstream seat  
A ball valve for controlling the flow of a fluid is provided having primary and secondary annular sealing seats which are disposed in the body cavity for the purpose of providing a seal between the...
6016829 Check valve having function of adjusting flow rate of fluid  
A check valve having a function of adjusting a flow rate of a fluid and comprising a flat body composed of a plastic film; and a fluid take-out appliance inserted into a duct of the body. The fluid...
5971007 Piston valve  
A piston valve for use in connection with the fire protection industry is disclosed which includes features for protecting against corrosion. A sacrificial zinc anode is mounted in the body of the...
5706851 Plug valve  
A high temperature water-cooled gas-tight lubricated steel plug valve for handling abrasive particulates (such as iron ore or sponge iron) having a water-cooled hollow double-walled housing with...
5520209 Fluid relief device  
The present invention discloses a fluid relief device for relieving pressure of a fluid stored in a container or tank, or fluid used in a piece of equipment. In one aspect such a device has a body...
5465748 Sanitizable slider diaphragm valve  
A sanitary slider valve shown specifically as a rotary carousel diaphragm valve which has a thermoplastic elastomeric diaphragm integrally molded to form the multiple sealing ports of the...
5341835 Lubrication system for valve seat of a gate valve  
A lubrication system for the block and bleed valve seat of a gate valve. Lubrication is provided to the seat through tubing which communicates with the exterior of the gate valve to supply the...
5327928 Air seal valve  
An air seal valve comprises an annular valve body having a circular valve plate disposed internally thereof with a pair of axially spaced valves thereon defining a fresh air plenum, one of said...
5287879 Hydraulically energized wireline blowout preventer  
A single ram wireline BOP mechanism is disclosed which incorporates opposed rams having elastomeric packing capsules and outer elastomeric seals for accomplishing sealing about a wireline extending...
5178363 Valve stem sealing means for prevention of fugitive emissions  
A valve stem sealing means comprising first and second seal assemblies, the first seal assembly being proximate a valve plug and comprising an expandable ring adapted to be expanded by pressure...
5159954 Hinged safety-valve for large ducts  
This invention relates to a shutoff mechanism, in particular in the form of a hinged safety-valve for large gas ducts, which contains a plate-shaped shutoff body which can be pressed against a seat...
5000422 Incinerator valve  
A valve comprising a circular butterfly that is rotatable about an axis extending diametrically of a cylindrical valve housing. The butterfly has two axially spaced seal surfaces on the periphery...
4899775 Corrosion-resistant overlay for the edge of butterfly valves  
An overlay for a valve disk of a butterfly or similar valve is formed from a strip of corrosion-resistant material. The strip is preferably profiled to conform to the edge of the disk and has an...
4892289 Letdown valves  
A letdown valve for slurries under pressure is provided with a throttle 13 inside a housing 15 with interposed lubricant sealer and grooves 16 to accommodate any excess lubricant sealer. The...
4749002 Shut-off device in the form of a ball valve  
The ball valve comprises a body (1) provided with two coaxial pipe stubs (4, 5) wherein a ball means (2) rotatable by means of a rotating shaft device floats. In the closed position, the downstream...
4702269 By-pass valve  
The present invention is directed to a valve having a plug with a pair of passages therethrough and a housing with ports which communicate with the passages of the plug in at least two orientations...
4671915 Method for making a glass precision valve  
A glass precision valve for use in liquid measuring instruments, the valve comprising a valve body having a conically sharpened head slidably accommodated in a bulged portion, which includes glass...
4664140 Reversing valve  
There is disclosed a reversing valve for use with a regenerative coke oven, in which the valve cock is lubricated, having four spaced longitudinally extending lubrication grooves that communicate...
4658853 Anti-leak valving system  
A butterfly-type step subassembly includes a substantially planar valve disc member having a peripheral groove formed in opposite surfaces thereof. Projecting inwardly from the internal walls of...
4635674 Diverter valve assembly and method  
A diverter valve for a swimming pool/spa system is disclosed which has a lubricated seal assembly for the diverter portion of the valve. Valve lubrication is accomplished without valve disassembly....
4601307 Lubricated plug valve  
A rotary plug valve having a smooth, cylindrical inner sealing surface between the flow passageways with a grease fitting port opening through it. When the valve plug is turned to an intermediate...
4583569 Wireline blowout preventer  
A ram-type blowout preventer having a removable seal insert contained in an insert cavity formed in the forward end of the ram body. Each seal insert includes an elastomeric body which forms an...
4565305 Rotary vane valve  
A rotary vane valve having a cylindrical housing with a pair of opposed end bells and an interior axial shaft. Opposed inlet and outlet openings on the side of the cylindrical housing allow...
4531537 Plug valve for reduced leakage  
A plug valve has an actuating stem which is non-integral with the valve plug. The actuating stem is axially movable with respect to the valve plug to compressingly and sealingly engage an external...
4519414 Mechanically balanced tapered plug valve  
The invention is a novel hermetic tapered plug valve having a spring-like resilient mechanism for providing axial balance to the plug and thereby prevent valve lock up.
4506696 Gas tight plug valve  
A rotatable valve member for use in controlling fluid flow in a conduit, such as a conduit used for the transmission of liquids and gas in oil servicing operations, is disclosed. The plug valve has...
4499919 Valve  
An improved valve is disclosed. In the preferred and illustrated embodiment, the valve utilizes a flat disk within a valve body, the disk supporting a peripheral groove having bearings therein for...
4498498 Double valve assembly  
A double valve assembly for regulating the feed of particulate material to or from a pressure vessel comprises a valve casing containing a flow-regulating valve and pressure sealing valve in...
4493349 Liquid filling machine  
A machine for filling liquid into flexible or rigid containers, including a filling head for passing fill liquid to a container, a valve in the head, an outlet from the head to the container, and a...
RE31471 Multiple blade damper assembly  
A damper assembly including a plurality of damper blades pivotable about parallel axes. Each blade includes a pair of parallel plates spaced apart by supporting members, the plates providing an...
4405113 Reciprocating expandable gate valve  
A valve body includes flow passageways across which a gate is movable with the gate having a central block sandwiched between outer seal blocks and a gate conduit alignable with the flow...
4372338 High pressure valve assembly  
A high pressure rotary plug valve having at least one groove in the housing to provide a flushing/lubricating flow of innocuous fluid between the housing and rotary plug thus preventing fine solids...
4335738 Butterfly valve  
A butterfly valve is disclosed for use in controlling the flow of gaseous fluid under high temperature, high pressure conditions. The interior of the valve body has non-overlapping semi circular...
4290578 Failsafe cutoff valve for oil and gas wells  
A failsafe cutoff valve that may be used with oil and gas wells is shown. A cylindrical body portion has a center bore extending longitudinally therethrough. A piston is located inside of the...
4286614 High temperature ball valve  
A ball valve includes a metal valve seat (36) carrying a relatively soft insert (40) which seals against a ported ball member (22). A packing ring (72) surrounding the seat is compressed between a...
4262690 High pressure stem packing for gate valves  
A pressure energized packing arrangement (50, 74) for sealing the stem (64) and bonnet (66) of a high pressure gate valve. A stack of packing rings (90) is compressed against the valve stem and...
4257574 Spherical valve seal  
A fixed upstream seal is provided having a variable geometry to provide a maximum body thickness at points of large deflection and a minimum body thickness at points of small deflections with the...
4254793 Ball valve having valve chamber venting seal assemblies  
A ball valve is disclosed wherein seal assemblies, extending about flow passages in the body of the valve to either side of a valve chamber containing the ball, are constructed to vent excess...
4249679 Sealing closure for asphalt mix storage bin outlet  
An asphalt mix storage bin outlet is surrounded by a rim member having a flat bottom surface in which there is an annular groove that extends around the outlet. An outlet closure comprises a...
4231440 Rotary, segmented, expansible valves  
A rotary, segmented, expansible valve comprising a valve body having a fluid passage and a body opening intersecting the fluid passage, a valve member rotatably mounted in the valve body opening...
4227543 Blowout preventer  
A ram-type blowout preventer for use in the drilling of onshore and offshore wells, having secondary plastic injection sealing means whereby, on failure of the conventional ram seal, a well closure...
4226258 Ball valve  
A ball valve including a valve housing, a valve seat retainer fitted in a fluid passageway of the valve housing and being movable forwardly and backwardly within a given distance along the...
4222406 Wedge-type gate valve  
A wedge-type gate valve with a one-piece gate or wedge movable longitudinally of itself in the valve chamber and transversely of the flow passage between open and closed positions. The gate is a...
4188174 Wear resistant valve  
A valve which is resistant to wear caused by particles trapped between the valve seat and the valve member or poppet when the valve closes, including an outlet for directing washing fluid at the...
4187878 Valve having internally pressurized sealing elements  
Disclosed is a valve especially adapted for the control of gases in large cross sectional ducts, flues, chimneys and the like. The valve comprises a plurality of elongated, vane-like closures...
4182359 Slide gate damper  
A slide gate damper arrangement which works well in large ducts, which are conveying hot, dust laden gases, and which duct has an obstruction extending down through the middle of it, such as a...
Matches 1 - 50 out of 139 1 2 3 >