| 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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| 11/17/1981 | US4300750 Position indicating valves |
| 11/11/1981 | EP0039643A1 Fluid safety valve |
| 11/10/1981 | US4299251 Optical valve position sensing |
| 11/03/1981 | US4297966 Valve indicator post |
| 10/27/1981 | US4297687 Leak detection apparatus |
| 10/27/1981 | US4296910 Hydraulically controlled safety valve |
| 09/29/1981 | US4291721 Apparatus for pressure detection and control of a safety valve |
| 09/29/1981 | US4291613 Monitor for double safety valves |
| 09/22/1981 | US4290553 Rotary knob for thermostatic valves of radiators |
| 09/03/1981 | WO1981002484A1 Leak detection apparatus |
| 08/19/1981 | EP0033867A1 Rupture disc alarm system |
| 07/21/1981 | CA1105355A1 Pressure equalizing valve |
| 07/07/1981 | US4276903 Control valve |
| 06/30/1981 | CA1104232A1 Fluid control valves |
| 06/23/1981 | US4274438 Method of diagnostic valve testing |
| 06/16/1981 | US4273150 Leverless pressure transducer |
| 06/09/1981 | US4271859 Temperature sensor |
| 06/02/1981 | US4270560 Photo-electric burst disc indicator |
| 05/20/1981 | EP0028661A1 Apparatus for periodically testing the operation of safety valves, and safety valve |
| 05/19/1981 | US4267859 Protective inlet for gas regulator valve housing |
| 05/05/1981 | CA1100595A1 Valve with indicator circuit |
| 04/28/1981 | US4263938 Relay valve for fluid actuators |
| 04/28/1981 | US4263929 Electropneumatic pressure relief indicator |
| 04/14/1981 | US4261546 Quarter-turn valve actuator |
| 04/14/1981 | US4261450 Failure detecting apparatus for a dual valve |
| 04/08/1981 | EP0026575A1 Pressure relief apparatus including valve and pressure indicator |
| 03/31/1981 | US4258748 Operating arms forming part of line valves |
| 03/17/1981 | US4256141 Relay valve for fluid actuators |
| 03/17/1981 | US4255967 Method and apparatus for testing the setting of a valve |
| 02/24/1981 | CA1096243A1 Valve indicator post |
| 01/07/1981 | EP0020949A1 Device for the control of the closing and opening functions of membrane valves, especially of membrane valves located behind a compressed air container in impulse conduits for purification of dust removal devices |
| 12/30/1980 | CA1092589A1 Torque transmitting assembly for rotary valve member |
| 12/30/1980 | CA1092448A1 Pressure relief valve with indicating means |
| 12/16/1980 | CA1091577A1 Hydraulically controlled safety valve |
| 12/09/1980 | US4237930 Safety valve |
| 12/09/1980 | CA1091128A1 Guide means for indicating check valve |
| 11/25/1980 | US4235258 Driving device for opening and closing a valve |
| 11/11/1980 | US4232698 Pressure relief valve with pressure indicating means |
| 10/29/1980 | EP0017868A1 Operation monitored valve arrangement |
| 10/15/1980 | EP0017365A1 Apparatus for measuring the set pressure of a safety valve |
| 09/09/1980 | CA1085260A1 Differential pressure overflow valve |
| 08/06/1980 | EP0013964A1 Device responsive to fluid flows within a range from above a predetermined minimum to below a predetermined maximum and nonresponsive to fluid flows beyond said range |
| 08/06/1980 | EP0013932A1 Device responsive to fluid leakage flows within a range from above a predetermined minimum to below a predetermined maximum and nonresponsive to fluid flows beyond said range |
| 08/06/1980 | EP0013898A1 Control valve |
| 07/22/1980 | US4213480 Manual override for hydraulic gate valve actuators |
| 07/15/1980 | US4213021 Indicating check valve |
| 07/09/1980 | EP0013266A1 Hydraulic actuator for a subsea gate valve having a manual override |
| 06/10/1980 | CA1079254A1 Metering valve |
| 06/03/1980 | US4205703 Flow sensor responsive to fluid within a range from above a predetermined minimum to below a predetermined maximum and nonresponsive to fluid flows beyond said range |
| 06/03/1980 | US4205702 Flow sensor responsive to fluid leakage flow within a range from above a predetermined minimum to below a predetermined maximum and nonresponsive to fluid leakage flows beyond said range |
| 05/20/1980 | US4203467 Pressure equalizing valve |
| 04/15/1980 | US4198030 Fluid operated valve positioner |
| 04/01/1980 | US4195662 Electromagnetic valve with electric signal generator |
| 03/25/1980 | US4194529 Control valve having integral visual indicator for fluid safety systems |
| 02/06/1980 | EP0007769A1 Method and apparatus for testing the setting of a valve |
| 02/05/1980 | US4186759 Closed system quick coupling head assembly |
| 01/29/1980 | US4185584 Signal device |
| 01/15/1980 | US4183467 Fluid control valves |
| 12/04/1979 | US4176617 Low pressure alarm |
| 11/06/1979 | CA1065735A1 Leak detector valve assembly |
| 09/25/1979 | US4168723 Pressure relief valve |
| 08/21/1979 | US4164959 Metering valve |
| 06/19/1979 | US4158366 Sillcock with water relief system |
| 05/08/1979 | US4152932 Fuel injection valves and their manufacture |
| 05/01/1979 | CA1053521A1 Fuel injection valves and their manufacture |
| 04/24/1979 | CA1053294A1 Fluid valve including electrical circuit control |
| 04/10/1979 | US4148339 Guide means for indicating check valve |
| 03/27/1979 | CA1051409A1 Valve positioning handle |
| 03/06/1979 | US4142973 Valve with indicator circuit |
| 02/13/1979 | CA1048477A1 Power actuated valve |
| 02/06/1979 | US4137942 Control valve having integral visual indicator for fluid safety systems |
| 01/09/1979 | US4133511 Electro-hydraulic regulating valve system |
| 01/09/1979 | US4133288 Device for indicating the operative position of a valve |
| 10/31/1978 | US4122863 Differential pressure overflow valve |
| 10/24/1978 | US4121615 Valve control with indicator |
| 09/26/1978 | US4116157 Rotatable visual indicator for safety systems |
| 09/26/1978 | US4116156 Maintenance alarm actuator |
| 07/11/1978 | US4099704 Vacuum valve apparatus |
| 06/06/1978 | US4093000 Rising stem valve position indicator |
| 03/07/1978 | US4077606 Flow control valve |
| 03/07/1978 | US4077427 Leak detector valve assembly |
| 02/21/1978 | US4074696 Pressure relief valve operation signal |
| 02/07/1978 | US4072126 Visual indicator for safety systems |
| 11/29/1977 | US4059960 Method and apparatus for testing the movability of valve plugs |
| 10/04/1977 | US4051866 Valve positioning handle |
| 09/06/1977 | US4046350 Power actuated valve |
| 08/23/1977 | US4043351 Fluid valve including electrical circuit control |
| 06/21/1977 | US4030696 Valve positioning handle |
| 06/14/1977 | US4029122 Apparatus and method for determining friction forces in position modulated valves |
| 06/14/1977 | US4029043 Position indicator for valves and the like |
| 05/10/1977 | US4022245 Sight check valve |
| 12/21/1976 | US3998108 Servomotor |
| 11/30/1976 | US3994255 Open-closed indicator for a valve |
| 11/16/1976 | US3991903 Quick-disconnect valve closure structure |
| 09/21/1976 | US3981324 Combined valve and outage gauge |
| 08/03/1976 | US3972442 Safety equipment |
| 07/20/1976 | US3970104 Fuel filter bypass valve with condition preliminary indicator and secondary indicator |
| 07/13/1976 | US3968813 Flow shut off valve |
| 04/27/1976 | US3952759 Liquid line break control system and method |
| 02/17/1976 | US3938555 Valve override apparatus |