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Patent Searching and Data


Matches 401 - 450 out of 5,376

Document Document Title
WO/1997/038249A1
A variable by-pass slow-closing check valve device in which a by-pass valve for buffering a reverse flow is adapted to facilitate water drainage and reverse flow volume controlling, and in which a main valve and the by-pass valve are bot...  
WO/1997/038250A1
A water-hammerless check valve which is capable of preventing both water hammering and pressure increase at the time of stoppage of fluid feeding irrespective of the state. A check valve adapted to be opened when a fluid is fed, to cause...  
WO/1997/037102A2
Several downhole flow control devices are disclosed which are meterable and are also capable of shutting off a particular zone in a well. Several embodiments include a multiple valve body, a toroidal inflatable valve, and a series of rel...  
WO1997021984A3  
WO/1997/023741A1
The noise level of the pressure regulating valve is often a hindrance in pressure regulating valves for motor vehicles. In the proposed pressure regulating valve (2), the sealing gap (40), a first section (21) and a second section (22) o...  
WO/1997/023742A1
A rotary noise attenuating valve is provided which utilizes noise attenuation technology previously utilized with linear valves. The arrangement includes an impedance assembly in which the area with the impedance assembly which is access...  
WO/1997/021984A2
A system for improving fluid pressure measurement in a control valve (100) includes placing a flow conditioner (12, 52) adajcent to and upstream from averaging channels (42, 82) located at the inlet (106) and outlet (116) of the control ...  
WO/1997/019284A1
A solenoid-actuated pilot-operated proportional relief valve comprising an adapter (13) whose upper part includes a guide hole (31) along its axis, which vertically guides a needle (3) in tight contact. The adapter (13) further includes ...  
WO/1997/018411A1
A valve (30) includes a fluid inlet passageway (12) coupled to a fluid outlet passageway (14) through an orifice and a valve plug (20) which is moveable with respect to the orifice to vary the rate of fluid flow through the orifice. A se...  
WO/1997/015772A1
A fluid control valve (40) suitable for pressure reducing service. A valve is provided with a fixed cage member (76, 78, 80) containing an internal passageway (28) communicating with a cage inlet and outlet. A movable valve plug (60, 62,...  
WO/1997/010132A1
The invention concerns a hydraulic change-over valve which effectively prevents fluttering in a hydraulic braking system. According to the invention, an air cushion which attenuates pressure pulsation is incorporated in the valve inlet c...  
WO/1997/006375A1
A valve (10) comprises a tubular insert (14) defining an inlet duct of given cross-sectional shape. A valve member (40, 42) is arranged to rotate about an axis. The valve member (40, 42) is formed with a recess (44, 46) extending from a ...  
WO/1997/003313A1
The invention relates to a method and a device for a valve for pressure regulation of steam, said valve including a steam plug (2) with bores (4) in its skirt (3), said bores being successively exposed as the valve is opened for achievin...  
WO/1996/031719A1
Disclosed is a regulation disc valve with a discharging device comprising the following members: a body (1) with a detachable fixed seat (2) comprising peripheral passage apertures (3) and a central channel (13); a rotary disc valve (4) ...  
WO/1996/030689A2
The subject of the invention is multipart water restrictor, which is inserted into the oppressed part of a new or already existent water armature and it restricts the flow of water and at the same time does not allow the hard parts to en...  
WO/1996/026760A1
An apparatus for controlling the flow of fluids between a main conduit and a plurality of secondary conduits includes a valve body having a wall defining a cylindrical bore, the wall having a plurality of ports in respective flow communi...  
WO/1996/026379A1
In a sanitary water valve, in particular a mixing value, with a connection unit to hook up a cartridge (1) to the water lines (4), the cartridge (1) comprising the control elements in a housing and the connection unit (6) being disposed ...  
WO/1996/023998A1
The present invention is applied to the field of valves, and in particular it relates to a fluxing device for the seat of a butterfly valve (1) comprising at least one protection element (7) for at least one spraying element (9). The pro...  
WO/1996/018054A1
The invention provides a reasonable, non-water hammering check valve device which radically dissolves a technical problem unsolved in conventional, non-water hammering check valves, is simple and precise in construction to provide less v...  
WO/1996/017190A1
The invention concerns a flow limiter, in particular to be placed at the outlet of sanitary water appliances, with at least one choke member (1), comprising a passage (4), and with a choke slide valve (2) extending parallel to the choke ...  
WO/1996/013414A1
The invention is to provide a low-noise magnetic valve on switch-off from the pressure limitation function. The magnetic valve (10) has a two-part tappet (23), the inner component (26) of which comprises the closing member (51) of a seat...  
WO/1996/013413A1
A low-noise magnetic valve with effective pressure limitation is to be provided. The magnetic valve (10) has a two-part tappet (26), the inner component (27) of which has the closing member (51) of a seat valve (35). The closing member (...  
WO/1996/011369A1
This invention aims at reducing the sound, which occurs in a dehumidification restriction unit during a dehumidification operation, of a flow of a refrigerant in an air-conditioner capable of carrying out a dehumidification operation whi...  
WO/1995/035458A1
A dynamic seal (36) is provided between a rotatable ball control member (24) and a noise attenuator (40) in a fluid control valve (10). In one embodiment a noise attenuator is rigidly clamped in the valve body (12) and a floating, spring...  
WO/1995/031658A1
The pressure retaining valve has a housing (1) with an inlet channel (4) and an outlet channel (5) which can be connected thereto. A valve piston (8) with a valve spindle (11) is fitted to move in the housing. The valve piston (8) is loa...  
WO/1995/022710A1
A variable flow restricting device comprises a part (12) having groove means (14) provided in a face (18) thereof and through-passage means (20) communicating with the groove means. The device further comprises covering means (22) for en...  
WO/1995/020735A1
The invention has its object to radically resolve an untapped technical issue in a non-water hammering check valve device, in which a valve disc, a valve seat and a surrounding flow passage are configured such that the valve disc is subs...  
WO/1995/020733A1
In a radiator valve a second throttle point which is formed by a gap (119) between an annular face (114) surrounding the valve seat and the end face of an insert (113) is located downstream of a first throttle point between the valve sea...  
WO/1995/020121A1
A variable restrictor valve (48) for use in an intermittent dispensing system (10) having a recirculation loop. The restrictor valve (48) establishes a more linear relationship between the amount of adjustment made thereto and the result...  
WO/1995/000789A1
An auxiliary tap valve (2) for incorporation into a standard tap gate (13) and adapted to close off the fluid supply when the main valve (10) is fully released wherein the conical shaped auxiliary valve face (7) in conjunction with the f...  
WO/1995/000790A1
Device for absorbing vibrations and noise produced in a hydraulic system, of the type comprising at least one casing (15, 16, 26, 41) of a flexible material, which encloses an air pocket (17, 18, 27, 40) and is placed in contact with the...  
WO/1994/019630A1
A mixing valve (10) has a control stem (22) for adjusting the movable ball valve (20) for controlling the flow rate and temperature mix of the mixed water. A spring clip (100) is mounted onto a rotatable disc member (70) retained on an u...  
WO/1994/019646A1
The steam desuperheating valve has a housing (4) with a steam inlet (1), a cooling water inlet (3) and a steam outlet (2). In the housing (4) there are a perforated basket (11) forming a depressurising chamber and an axially movable cont...  
WO/1994/016259A1
A flow control device (1) for insertion into a conduit to control the flow rate of fluid flow therethrough. The device (1) includes two opposed dished baffle plates (2) and (3) defining a chamber (4) therebetween. Each baffle plate has a...  
WO/1994/011659A1
The flow regulating valve (10) of the ball or plug type comprises a ball (13) which rotates about a rotation axis (14) and comprises a shut-off area (15) and a regulation area (16). The regulation area (16) comprises a series of channels...  
WO/1994/007064A1
A rotary control valve is provided with a variable area orifice (23) in the control element (20) that communicates with a bypass channel (31), which contains noise silencing means, when the valve is in the less than full-open position. T...  
WO/1994/007063A1
A low-noise rotary control valve includes a valve body (10) and a rotatable ball (12). An upwardly extending diverter (28) is positioned in the entry flow passage (15) of the ball (12). A downwardly extending diverter (30) is disposed on...  
WO/1994/005940A1
The invention relates to a valve of the cylindrical seat type, conical seat type or slide type, intended to reduce the differential pressure before the complete opening or closing of the valve. The valve (10) is comprised of a body (11) ...  
WO/1994/004255A1
The invention relates to a method and apparatus for reducing steam pressure and temperature in a steam conditioning valve, in which steam flow is regulated with the aid of a valve plug (5) displaceably arranged in a valve seating (4), th...  
WO/1993/024776A1
A valve construction comprising a molded body (1) including a plurality of body sections (2a, 2b) each having a generally flat inner surface (3). The flat surfaces of the body sections are disposed in contiguous relation along an interfa...  
WO/1993/017265A1
The regulation valve for high pressure surges is comprised of a seat (1) which is extended downwards as a perforated part, a cylinder (2) and a hollow sealing device (3) which has various diameter decreasing from top to bottom which comb...  
WO/1993/009982A1
The invention concerns a pressure-control valve with a valve-obturation element (4) which is mounted so that it can move longitudinally in the valve housing (17). The valve-obturation element (4) allows the size of a port between a first...  
WO/1993/010389A1
A device for restricting fluid flow comprises a rigid body (1) having a smooth surface (9); a fluid inlet tube (7) opening onto said smooth surface in a first region; a fluid outlet tube (10) opening onto said smooth surface in a second ...  
WO/1993/008051A1
An electromagnetic valve has a magnetic armature (1) that is enclosed in a valve dome (11) and that moves back and forth according to the current applied to a magnetic coil (1) arranged on the valve dome (11), so that a valve lifter form...  
WO/1993/006400A1
A liquid-regulating valve comprises a cylinder tube (6) having holes (7) through which liquid can pass in radial jets. Further, the valve comprises a piston (9) and a distributing means (15) which is fixedly mounted in the cylinder tube ...  
WO/1993/004308A1
A throughflow valve (1) comprising a valve seat (2) and a valve body (3) is intended to permit a given flow of fluid to pass therethrough when the valve is closed. To this end, the mutually abutting surfaces (2a; 3a) of the valve seat an...  
WO/1992/022767A1
A device for mixing valves of the one lever type for liquids, for example hot and cold water, of the kind that comprises a valve housing (10) provided with inlets (19) and a common outlet (20) for the liquids, an operating member (12) fo...  
WO/1992/018797A1
An isolating valve (31) for the water supply to a washing machine and adapted for attachment between a main control valve (12) and the inlet end of a supply hose (11) the outlet end of which is to be connected to the washing machine (10)...  
WO/1992/014088A1
A seal arrangement for a metering valve wherein a cylindrical member (30) has a groove (38) located on a face adjacent a seat which surrounds an opening connected to an inlet port (20). An elastomeric member has a base which is located i...  
WO/1992/013222A1
A pressure relief valve (14, 14A) has a reciprocable valve member (34, 34A) for seating on an annular seat face (66, 66A) of a nozzle assembly (38, 38A). The nozzle assembly (38, 38A) has an inner seat ring (40, 40A), a radially outer an...  

Matches 401 - 450 out of 5,376