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Patent Searching and Data


Matches 351 - 400 out of 3,117

Document Document Title
WO/1995/019550A1
A compression spring (1) is formed of elastic material in a shape resembling a trumpet horn. Novel valve structures incorporate the trumpet horn spring as a component, the latter of which serves therein to make the valve self restoring a...  
WO/1995/011396A2
A valve assembly comprising a main valve body having an inlet flow passage and at least one outlet flow passage and a flow chamber extending between the same. The main valve body has a valve seat surrounding the inlet flow passage. The v...  
WO/1995/002778A1
In a preferred embodiment, in a fluid flow valve (10) having a body (12) and having a movable member (82) with lower face, the movable member (82) being movable between a position spaced from a sealing position in the body (12) when the ...  
WO/1995/001526A1
The invention relates to a valve for a pipe or reservoir, comprising a housing, a shut-off element, a rotatable operating shaft which runs through the housing, and a primary seal on the shaft. Seen from the shut-off element a secondary s...  
WO/1994/028336A1
The invention relates to a process and a device for the controlled compression of a stuffing box (12, 20, 22). This is done in the invention by applying a predetermined maximum pressure for the initial compression of the stuffing box pac...  
WO/1994/027069A1
The valve has a sleeve-like closure element (16) movable in an axial through-flow channel (4) with a lift drive (24) arranged coaxially thereto. Said closure element, when closed, bears on its outer periphery on a centrically arranged fl...  
WO/1994/019116A1
A distribution valve for a high-pressure pump comprises a closed valve housing (1), in which a valve rotor (2) is rotatably mounted. The valve rotor is adapted during rotation, preferably indexing, to alternately open and close the flow ...  
WO/1994/005910A1
A cylinder and sleeve combination, such as those found in fluid control systems, having closely positioned moving elements that leach one or more substances upon sustained contact with the subject, reactive fluid. One embodiment comprise...  
WO/1994/003747A1
The invention concerns a valve (1) which, in the region of the fluid which flows through it, is frictionless and hence does not contaminate the fluid with germs or other particles. The valve has a chamber (2) for the fluid, the chamber h...  
WO/1994/001750A1
An apparatus (A) can withdraw a sample from a vessel or conduit or provide a sample to this vessel or conduit. This apparatus includes a main body (10) with an inlet passage (12) and drain passage (14) both inclined relative to the body....  
WO/1993/025804A1
The valve shaft (24) passes through a journal bearing (28) in the wall of the valve body to an actuating lever attached to the shaft on the outside of the valve body. This journal bearing is sealed by an arrangement of several parts to p...  
WO/1993/012364A1
A non-planar flexible graphite sealing ring is used to control leakage in fluid handling device where a shaft (57) extends through the wall of the device. The flexible graphite sealing ring (26) comprises a chevron-shaped cross section h...  
WO/1993/007410A1
A valve sealing apparatus including a valving member (500), a valve bonnet (520) having a continuous bore (540) that communicates with the valving member (500), a valve shaft (542) housed within the bore (540) of the bonnet (520), a prim...  
WO/1993/003300A1
A valve stem, packing removal means for removing a valve stem packing assembly (46, 48, 52). The stem packing removal means (60, 72, 74, 76) includes a valve stem (60). The packing removal means (60, 72, 74, 76) comprises a radially disp...  
WO/1992/020946A1
An actuator-cylinder valve connection mechanism has a bonnet nut (28) with external threads (30) and receives an outer valve stem (32), a valve body (12) having an upper end with internal and external threads with the internal threads in...  
WO/1992/016776A1
A sealing assembly (65), usable with a valve or the like (63), having a movable shaft (54) within a main housing (52) and controlling a product under a first pressure. A cartridge housing (17) forms a continuation of the main housing (52...  
WO/1992/015813A1
The invention concerns a process for the manufacture of the internal parts of a vacuum valve with a valve disc (12), pleated bellows (16) and a sealing collar (17). In order to reduce the relatively high technical complexity involved in ...  
WO/1992/014084A1
An improved rotary valve (10) is provided with a bellows (64) surrounding a bent shaft (56) to create a hermetic seal and thereby prevent fluid loss from the interior of the valve body (12). The shaft is provided within a seal assembly h...  
WO/1992/013225A1
Valve packings of alternating layers of perfluoroelastomer (6) and high temperature polymer (3) provide outstanding sealing performance against corrosive fluids and high temperatures.  
WO/1992/013224A1
Valve packings of alternating layers of perfluoroelastomer and fiber-filler high temperature polymer provide outstanding sealing performance against corrosive fluids and high temperatures. A further layer of flexible graphite on the atmo...  
WO/1992/010699A1
The present invention is directed to a sealing device for a rotary valve. The sealing device of the present invention comprises a bellows seal (6) sealingly disposed about a linearly displaceable actuator shaft (14) between a housing (30...  
WO/1992/009835A1
A diaphragm valve (1) comprises a valve body (2) defining a diaphragm opening (4) and a valve seat (9); a valve bonnet (5) secured to the valve body; a diaphragm (7) closing the diaphragm opening, the peripheral zone (10) of the diaphrag...  
WO/1991/019919A1
A method and apparatus are provided for injecting sealant into a packing assembly chamber surrounding a valve stem (11) of a valve (2) without venting the pressure within the valve (2). A cylindrical body (60) is frictionally welded to t...  
WO/1991/018230A1
A free draining, corrosive resistant valve for regulating the flow of corrosive fluids therethrough includes a plastic valve housing (10). An inlet passage (16) extends into the housing and upwardly therein terminating in a valve seat (2...  
WO/1991/016563A1
The operating spindle of a stop or diversion fitting is moved into its various positions via an operating lever (4) fitted on the housing (1) and engaging with the pin (6) of the operating spindle (2). The movable operating lever (4) is ...  
WO/1991/011644A1
A needle packing assembly is described comprising an annular seal (1) of ultra-high molecular weight plastics material such as polyethylene. A stepped concentric passage (4) passes through the seal with a shoulder (6). The outer end of t...  
WO/1991/011642A1
A gas flow bellows valve (50) includes a self-centering toroidal guide (6) which seals in line contact the main valve body (1) and a bonnet (8), with a valve stem (4) being translatable therein. A flat wave spring (14) is positioned in o...  
WO/1991/010855A1
The invention relates to a shut-off fitting with a sealing device which have a packing housing and a packing box for the actuating element of the shut-off element. The packing housing (19) of the sealing device (18) has holes (20, 21) in...  
WO/1991/002914A1
A stop valve assembly comprises two closure members one for stopping substantive gas or liquid flow and the other to prevent leakage along a spindle section (33). Each member possesses a closure element in the form of a rigid disc-like m...  
WO/1991/002184A1
A valve stem seal has a fixing region (7) with a flange (9) for mounting in a valve housing, and a flexible seal region (19), with an external groove (17) between these regions to permit the region (19) to flex relative to the fixing reg...  
WO/1991/000465A1
A unique bellows seal (22) for sealing valve components, joining sections of pipe together, and the like, includes an elongate, accordion-pleated body (23) having first and second ends and a plurality of axially spaced apart reinforcing ...  
WO/1990/013483A1
In the disclosed doser-dispenser, the doser piston (28) is carried by a first control tube (2) and the valve (32a) forming with the central passage (32b) of said piston (28) an intake valve (32) is situated on the side of the supply cham...  
WO/1990/012972A1
In a sampling valve comprising a stretchable hollow valve plug (10) mounted on the front end of an axially displaceable valve stem (7, 8), the plug is provided on its inner surface with a bead (14) projecting into a groove (15) in the st...  
WO/1990/008278A1
A ball valve (10) has a ball valve member (34) mounted for floating movement in a valve chamber (32) between an upstream metal seat (102) and a downstream metal seat (104). Each metal seat (102, 104) fits within a recess (100) and has a ...  
WO/1990/008285A1
A spindle sealing for a shut-off fitting has a sheet metal housing. Its sealing support (10) consists of a deep-drawn piece of sheet metal which forms a bushing (13) in the centre of which a sealing sleeve (8, 9) is lodged.  
WO/1990/008279A1
The universal control valve, according to this invention, introduces a diaphragm (2) fixed between the lower casing (1) and the upper cassing (3), and a nominal opening (26) in the upper wall (79) of the lower casing (1), and a self-rins...  
WO/1989/004399A1
The invention regards a needle valve with spray nozzle for spraying hot tar or bituminous liquids on roads. For this purpose the spray-nozzle (3, 4) is also the seating of the valve. The valve-needle (11) is activated by compressed air i...  
WO/1984/003750A1
A valve body has a stem passage (12) rotatably receiving a valve stem (C). A packing (54) surrounds the stem in the passage and a packing nut (90) threaded on the stem applies axial force to radially expand the packing into sealing engag...  
WO/1984/003546A1
A stem-operated fire-resistant gate valve including an improved metal-to-metal stem backseat fusible ring (52) assemblies for facilitating automatic stem backseating at pre-selected temperatures, spring enhancement of the backseating pro...  
WO/1984/000795A1
A valve for controlling the flow of fluids of a flammable nature and under high pressure, which includes a hollow body (10) having a plug (24) rotatably mounted within the body between the floating seats (30) at inlet (16) and outlet por...  
WO/1983/003654A1
An improved valve having a body (12) with an inlet (14), an outlet (16), a valve chamber (18), a valve seat (20), a valve member (28) movable in the valve chamber (18) toward and away from said valve seat (20), a stem (30) connected to s...  
WO/1983/001099A1
A "fire safe" stem seal arrangement for ball valves. The stem (28) is rotatably mounted in a stepped bore (22) in the stem housing (21) in the valve body (10) and is provided with a collar (30) with abutment faces (31, 32) opposed to cor...  
WO/1982/004300A1
An outer threaded type sluide valve having no bonnet and formed of carbon steel, 3 1/2 nickel steel or stainless steel. A yoke (18) is threaded directly to a body (1), a packing chamber (7) is provided directly at the body (1), and a cyl...  
WO/1982/004298A1
An outer threaded type ball valve having no bonnet for controlling high-pressure fluid and formed of carbon steel, 3 1/2 nickel steel or stainless stell. A yoke (19) is threaded directly to a body (1), and a packing chamber (7) is provid...  
WO/1982/003898A1
A seal for ball valve bodies or other valve stems comprising an annular member (11) of curved cross-sectional shape, the member adapted to sealingly engage between relatively movable members (4, 2) under the influence of fluid pressure u...  
WO/1981/002454A1
A packing (10) for a stuffing box (12), for example, for petrochemical and/or power industry valves including one or more low density, graphite preform rings (30 and 44) which are further compressed, when the packing gland is tightened, ...  
JP6605630B2  
JP2019529845A
The present invention is the minimum pressure valve (50) for vehicles, especially a screw compressor (10, 112) for commercial vehicles, and is at least one valve casing (114), It has at least one valve insertion opening (116) formed in t...  
JP2019168103A
[Subject] Rotation of a spindle is controlled. [Means for Solution] Pressure room S is provided between housing 20 and spindle 30, and spindle 30 is provided with the following. Free passage way 31 which opens an inflow mouth and a press...  
JP2019148341A
[Subject] A circulation system of a valve and cooling water which can attain a miniaturization is provided. [Means for Solution] The present invention is valve CV which changes an object which pours cooling water sent to engine EG with w...  

Matches 351 - 400 out of 3,117