| Patents for F16K 37 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given (8,203) |
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| 11/28/1990 | EP0187827B1 Flow control device for administration of intravenous fluids |
| 11/28/1990 | CN1047375A Valve actuator two rotor three position |
| 11/27/1990 | US4972867 Valve stem seal leak protection and detection apparatus |
| 11/06/1990 | US4967792 Sensing the open and/or closed condition of valves |
| 10/23/1990 | US4965513 Motor current signature analysis method for diagnosing motor operated devices |
| 10/03/1990 | EP0390224A2 System for evaluating the condition and performance of a valve and valve operator combination and sensor for measuring forces on a valve stem |
| 09/25/1990 | CA1274445A1 Control regulator having a fabric reinforced diaphragm |
| 09/19/1990 | EP0387918A2 Method and apparatus for cleaning a valve sealing arrangement under dynamic stress |
| 09/19/1990 | EP0387634A1 Armature with stroke limitation |
| 09/18/1990 | US4957274 Position sensor for a rotary valve |
| 09/12/1990 | CN2061996U Magnetic sampling valve |
| 09/12/1990 | CN2061995U Self-close valve for water supply cutting off |
| 09/04/1990 | US4953590 Electromagnetic directional control valve |
| 08/29/1990 | CN1044978A Butterfly valve having function for measuring flow rate and method of measuring flow rate with butterfly valve |
| 08/28/1990 | US4951697 Rupture disk failure indicating apparatus |
| 08/22/1990 | EP0382964A2 Butterfly valve having the function of measuring flow rate and method of measuring flow rate with a butterfly valve |
| 08/22/1990 | CN1009302B Pressure reducing valve with pressure automatic setting |
| 08/16/1990 | EP0382179A2 Water pressure-controlled valve particularly for heating systems with sanitary-water production |
| 08/16/1990 | DE4003239A1 Positionsanzeigevorrichtungen fuer drehmechanismen Rotating mechanisms position indicator and tidying |
| 08/14/1990 | US4949288 Testing system for safety relief valves |
| 08/09/1990 | WO1990008943A1 Indicating device for rotatably mounted component parts |
| 08/09/1990 | DE3935584C1 Extruder regulating valve system - has pre-adjustment device with calibration scale |
| 07/10/1990 | US4940011 Valve actuator two rotor three position indicator |
| 06/28/1990 | DE3844020A1 Displacement sensor (position pick-up) having mechanical gearing elements |
| 06/26/1990 | US4936150 Strain follower |
| 06/06/1990 | CN1042767A Position detector for clapper of non-return valve |
| 06/05/1990 | US4930228 Stem load determining system |
| 05/23/1990 | EP0369918A1 Process and device for detecting the state of a valve |
| 05/16/1990 | CN2057255U Indicating pressure regulator for liquefied petroleum |
| 05/10/1990 | DE3920365C1 Quick operating safety cut-out valve - for gas feed line downstream from appts., has closure plates working under spring pressure |
| 05/09/1990 | EP0366960A2 Operation-monitored magnetic valve |
| 05/08/1990 | US4922854 In a milking system |
| 04/10/1990 | US4916613 Remote low power indicator for battery driven apparatus |
| 04/04/1990 | CN2055558U Fire-proof regulating-valve actuator |
| 04/03/1990 | US4912984 Quickly installed load measuring apparatus and associated system |
| 04/03/1990 | US4912965 Rupture disc monitor |
| 03/21/1990 | CN2054861U Multi-purpose electromagnetic valve |
| 03/14/1990 | CN2054512U Pressure regulating heating combined valve |
| 02/22/1990 | WO1990001652A1 Mounting of alarm switches to valves |
| 02/21/1990 | CN1039910A Computer aided tuning of tubine controls |
| 02/20/1990 | US4902945 Electrical control for hydraulic valves |
| 02/20/1990 | US4901751 Fluid control valve and system with leak detection and containment |
| 02/13/1990 | US4899781 Tamper indicator assembly for valves and like devices |
| 02/07/1990 | CN2052470U Solenoid valve for automatic cutting off gas |
| 01/31/1990 | EP0352506A2 Computer aided tuning of turbine controls |
| 01/23/1990 | US4896101 Method for monitoring, recording, and evaluating valve operating trends |
| 01/16/1990 | US4893582 Deck box valve operator and position indicator assembly |
| 01/16/1990 | US4893494 Method and system for testing safety relief valves |
| 01/10/1990 | EP0350017A1 Valve with a leak indicator |
| 01/10/1990 | EP0349638A1 Dc motor operated valve remote monitoring system |
| 01/10/1990 | CN2050914U Ball valve for heat preservation used for heating pipeline |
| 01/09/1990 | US4891975 Method and apparatus for remote monitoring of valves and valve operators |
| 12/27/1989 | EP0347764A2 Device for measuring the torque of an armature movable by an actuator |
| 12/27/1989 | CN2050112U Jaw opening-adjustable high-frequency magnetic valve |
| 12/27/1989 | CN2049961U Fire extinguisher opening valve |
| 12/26/1989 | US4889151 Snap action pressure relief valve with over pressure indicator |
| 12/26/1989 | US4888996 DC motor operated valve remote monitoring system |
| 12/14/1989 | DE3819300C1 Method for testing the leak-tightness of sealing elements in shut-off fittings and a device for carrying out the method |
| 11/30/1989 | DE3816736A1 Ball valve |
| 11/28/1989 | US4882937 Strain sensor for attachment to a structural member |
| 11/14/1989 | US4879901 System for evaluating the condition and performance of a valve and valve operator combination |
| 11/07/1989 | US4879511 Flat, multiconductor cable coil device for in situ detecting of axial motion of a generally cylindrical member |
| 10/25/1989 | CN2046577U High efficiency pressure pipe junction with quick-clamping function |
| 10/04/1989 | CN2045457U Magnetizing filtering water tap |
| 09/26/1989 | US4869102 Method and apparatus for remote monitoring of valves and valve operators |
| 09/26/1989 | CA1260730A1 Water mixer fitting, in particular a single-lever mixer fitting |
| 09/20/1989 | EP0332756A2 Position indicator for valves, especially for double seat valves having moving valve discs |
| 09/20/1989 | CN2044678U Steam-leak alarm for draining valve |
| 09/20/1989 | CN1035735A Method and device for monitoring operation of movable components |
| 09/19/1989 | US4866940 Computer aided tuning of turbine controls |
| 09/12/1989 | US4864963 Indicating means for valve open or closed position |
| 09/05/1989 | US4862916 Gas quantity measuring device |
| 08/31/1989 | DE3902731A1 Actuating member for the rotatable spindle of a fitting |
| 08/29/1989 | US4860596 Motor operated valve analysis and testing system with monitoring of spring pack movement through torque switch post |
| 08/15/1989 | US4856551 Double seat valve with two valve disks |
| 08/15/1989 | US4856327 Method and apparatus for monitoring and measuring dynamic loads in thrust inducing systems |
| 08/10/1989 | WO1989007217A1 Method and apparatus for monitoring and measuring dynamic loads in thrust inducing systems |
| 08/09/1989 | CN2042554U Forecasting device for changing liquified gas bottle |
| 08/01/1989 | US4852387 Method for testing relief valve |
| 07/19/1989 | CN1034048A Double block and vent system |
| 07/13/1989 | WO1989006351A1 Dc motor operated valve remote monitoring system |
| 07/12/1989 | CN1033864A Testing means for operation pressure of safety valve |
| 07/04/1989 | US4844115 Butterfly valve |
| 06/29/1989 | WO1989005938A1 Valve position monitoring system |
| 06/28/1989 | CN2040201U Hydraulic plate-type gate valve with a build-in rod |
| 06/20/1989 | US4840057 Method and apparatus for testing relief valve |
| 06/20/1989 | CA1256083A1 Flow control device for administration of iv fluids |
| 06/14/1989 | CN2039372U Multi-functional valve for combustible gas |
| 06/07/1989 | EP0319264A1 Rotary shaft position reed switch |
| 06/06/1989 | US4836974 Variable linear motion cycle monitoring device |
| 05/30/1989 | US4833916 Monitor for testing the operating condition of a nonreturn valve |
| 05/24/1989 | EP0316526A1 Position actuator with a load-responsive limit control apparatus |
| 05/24/1989 | DE3837882A1 Device for testing the working pressure of a safety valve |
| 05/23/1989 | US4833453 Monitoring of movable components |
| 05/23/1989 | US4831873 Method and apparatus for remote monitoring of valves and valve operators |
| 05/17/1989 | EP0316127A1 Double block and vent valve system |
| 05/16/1989 | US4831350 Rotary shaft position reed switch |
| 05/11/1989 | DE3737095A1 Device for testing the functioning of spring-loaded safety valves |
| 05/10/1989 | EP0315391A2 Online valve diagnostic monitoring system |
| 05/10/1989 | CN2037420U Controlled delayed self-stop valve |