| Patents for F16K 25 - Details relating to contact between valve members and seats (2,498) |
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| 03/20/1990 | US4908884 Flexible drain |
| 03/07/1990 | EP0356491A1 Valve arrangement. |
| 02/20/1990 | CA1266037A1 Ball valve |
| 01/10/1990 | EP0231302B1 Shut-off device in the form of a ball-valve |
| 01/09/1990 | US4892289 Letdown valves |
| 12/14/1989 | WO1989012192A1 Valve assembly |
| 11/02/1989 | EP0339168A1 Mechanism for the filling and emptying of the water tank of water closets |
| 11/02/1989 | EP0339083A1 A pair of seal members of hard material having a low friction coefficient |
| 10/18/1989 | EP0337519A2 Method and device for the protection and the support of a valve gasket |
| 09/27/1989 | EP0334401A2 Method and apparatus for controlling the entry of a medium into a leakage space |
| 09/26/1989 | CA1260376A1 Wear resistant diamond cladding |
| 09/20/1989 | EP0332806A2 A valve device for controlling flow of sterile fluid material, and a feeding and cleaning device incorporating said valve device |
| 09/20/1989 | EP0243428B1 Mutually sealing valve elements for mixing taps |
| 08/24/1989 | WO1989006764A3 Process and device for controlling the admission of a medium into at least one leakage chamber of a valve device |
| 08/22/1989 | US4858641 Shut-off valve |
| 08/15/1989 | US4856758 Silicon carbide valve elements |
| 08/15/1989 | US4856551 Double seat valve with two valve disks |
| 08/03/1989 | DE3835363A1 Method of controlling at least one leakage space of a valve device and device for carrying it out |
| 08/03/1989 | DE3801569A1 Method and device for the construction of a valve seat with a seal arranged on the housing side |
| 08/03/1989 | DE3801561A1 Valve device |
| 07/27/1989 | WO1989006764A2 Process and device for controlling the admission of a medium into at least one leakage chamber of a valve device |
| 07/27/1989 | WO1989006763A1 Process and device for protection and support of a seal in a valve arrangement |
| 07/19/1989 | CN1034048A Double block and vent system |
| 07/04/1989 | US4844115 Butterfly valve |
| 06/28/1989 | CN1004646B Throttle valve |
| 06/13/1989 | US4838301 Draining valve for waste paper processing appliances |
| 06/06/1989 | CA1255281A1 Butterfly valve and method of making same |
| 05/18/1989 | WO1989004433A1 A pair of seal members of hard material having a low friction coefficient |
| 05/17/1989 | EP0316127A1 Double block and vent valve system |
| 05/09/1989 | CA1253836A1 Manually releasable drainport closure |
| 04/04/1989 | US4818469 Molded, flexible graphite element coated with a thin tantalum layer |
| 03/07/1989 | US4810584 Lithium tantalum oxide coated tantalum articles with improved wear resistance and process for providing the same |
| 02/21/1989 | CA1250314A1 Urea synthesizing process utilizing silicon carbide materials in its equipment |
| 02/01/1989 | CN1030818A Magnetic sealing device |
| 01/18/1989 | EP0299029A1 Process and device for controlling valve leakage spaces |
| 01/17/1989 | US4798223 Double block and vent valve system |
| 12/15/1988 | WO1988009894A1 Metallic covering for faucet mixing valve plates |
| 12/07/1988 | EP0293570A1 Cut-off valve |
| 12/06/1988 | CA1246044A1 Apparatus for discharging dirty liquid from a vessel under pressure, as well as a grid-containing vessel comprising such an apparatus |
| 11/29/1988 | CA1245618A1 Ball valve |
| 11/22/1988 | US4785841 Bladder valve |
| 09/20/1988 | US4771805 Gate valve |
| 08/24/1988 | EP0279177A1 Valve with a controlled leakage space |
| 08/24/1988 | CN88100983A Method and apparatus for controlling leakage-chamber of valves |
| 08/10/1988 | EP0277866A1 Discharge valve for old paper treatment apparatuses |
| 08/03/1988 | EP0276378A1 A surge irrigation valve |
| 07/28/1988 | WO1988005512A1 Process and device for controlling valve leakage spaces |
| 07/19/1988 | US4757834 Method and apparatus for the realization of a leakage-free switching double seat valve adapted for cleaning seat surfaces |
| 07/05/1988 | US4754950 Valve |
| 06/07/1988 | US4749002 Shut-off device in the form of a ball valve |
| 04/26/1988 | US4740347 Method of aligning and fixing valve components during valve assembly |
| 04/26/1988 | US4739965 Apparatus for discharging dirty liquid from a vessel under pressure, as well as a grid-containing vessel comprising such an apparatus |
| 04/12/1988 | US4736767 Fluid flow controller |
| 04/05/1988 | US4735462 Inertia valves |
| 03/22/1988 | US4732364 Wear resistant diamond cladding |
| 03/08/1988 | US4729545 High pressure relief valve |
| 03/01/1988 | CA1233457A1 Gate valve |
| 02/23/1988 | CA1233090A1 Erosion resistant soft seated valve trim |
| 01/26/1988 | US4721129 Relief valve |
| 01/19/1988 | US4719938 Self-cleaning valve and cryopump utilizing the same |
| 12/16/1987 | EP0248944A1 Cut-off valve |
| 12/15/1987 | US4712579 Well flow line choke |
| 12/08/1987 | US4711272 Surge irrigation valve |
| 12/03/1987 | WO1987007350A1 Valve device |
| 11/17/1987 | US4707278 With box, needle and seat; for dust-laden gases |
| 11/10/1987 | CA1229023A1 System for cleaning a three-way valve |
| 11/04/1987 | EP0243428A1 Mutually sealing valve elements for mixing taps. |
| 10/13/1987 | US4699169 Inlet valve mechanism for a toilet tank |
| 10/13/1987 | CA1227971A1 Solids feed control valve assembly |
| 09/22/1987 | CA1227178A1 Valve |
| 09/17/1987 | DE3607362A1 Parallel slide valve as a shut-off and regulating fitting for gaseous and liquid flows |
| 09/10/1987 | DE3607796A1 Process for producing sealing rings (washers) for sanitary fittings and a sealing ring |
| 09/01/1987 | CA1226261A1 Lavatory system for use in potentially vandalized areas |
| 08/18/1987 | CA1225567A1 Erosion resistant soft seated valve trim |
| 08/12/1987 | EP0231302A1 Shut-off device in the form of a ball-valve. |
| 07/07/1987 | US4678546 Process for providing lithium tantalum oxide coated tantalum articles with improved wear resistance |
| 07/02/1987 | DE3631447A1 Piston valve |
| 07/02/1987 | DE3545266A1 Parallel slide valve as a shut-off and regulating fitting for flows of gaseous and liquid substances |
| 06/24/1987 | EP0226298A1 Inertia valves |
| 06/23/1987 | CA1223240A1 Multi-purge gate valve for particulate solids flow |
| 06/09/1987 | US4671310 Flow control valve |
| 06/02/1987 | US4669702 Erosion resistant soft seated valve trim |
| 05/20/1987 | EP0222376A2 High-pressure reducing valve |
| 05/12/1987 | US4664356 Control valve |
| 05/07/1987 | WO1987002749A1 Mutually sealing valve elements for mixing taps |
| 04/30/1987 | DE3538261A1 Gegeneinander abdichtende ventilelemente fuer mischarmaturen Against each sealing valve elements for mixing valves |
| 04/29/1987 | CN85107732A Sluice valve |
| 04/08/1987 | EP0216810A1 A process for manufacturing seal disk members having a low friction coefficient. |
| 04/07/1987 | US4655253 Shut-off valve |
| 04/07/1987 | US4655241 Apparatus for sealing dampers |
| 03/31/1987 | US4653525 Fluid flow control valve |
| 03/25/1987 | EP0126744B1 A stop or switch valve for fluids |
| 03/24/1987 | US4651770 Ceramic disc faucet valve |
| 03/05/1987 | DE3537779C1 Valve |
| 03/04/1987 | EP0211939A1 Process of manufacturing seal members having a low friction coefficient |
| 03/03/1987 | US4646777 Flat slide valve with notched guide strips |
| 02/03/1987 | US4640492 Involute valve closure |
| 01/29/1987 | WO1987000597A1 Shut-off device in the form of a ball-valve |
| 01/20/1987 | US4637420 Metering valve |
| 01/14/1987 | EP0208126A1 Process to produce a leak-proof double-seat valve with washing of the seats, and device to realize the process |