Patents
Sitemap › F16 - Engineering elements or units; General measures for producing and maintaining effective functioning of machines or installations; Thermal insulation in general › F16K - Valves; Taps; Cocks; Actuating-floats; Devices for venting or aerating › F16K 17 - Safety valves; Equalising valves
Patents for F16K 17 - Safety valves; Equalising valves (21,027)
12/1989
12/26/1989US4889150 Pressure control for earthquake sensitive shut-off valve
12/21/1989DE3917010A1 Rapid release valve
12/20/1989CN1006180B Self regulating deicer valve
12/19/1989US4887638 Regulator
12/19/1989US4887631 Fire isolation device
12/19/1989US4887630 Pneumatic control system for air handling system damper
12/14/1989DE3917732A1 Berstscheibe Rupture disc
12/13/1989EP0346268A1 Function control valve for a compressor
12/12/1989US4886089 Gas venting valve for liquid tank
12/07/1989DE3818700A1 Valve for pipe shut-off devices
12/06/1989CN2048925U Spring safe valve for steam boiler
12/06/1989CN2048924U Fire insulation valve for household piped gas
11/1989
11/30/1989WO1989011610A1 Heater control valve
11/30/1989DE3817140A1 Valve arrangement
11/29/1989EP0344048A1 Autonomously opening valve and aircraft equipped with such a valve
11/29/1989EP0343615A1 Gas supply fitting
11/29/1989EP0343614A1 Gas supply fitting
11/29/1989CN2048545U Multi-funcitonal safety gas valve
11/28/1989US4883081 Flow and seismic sensitive safety valve for gaseous fluids
11/23/1989EP0343020A1 Automatically opening valve and aircraft equipped with such a valve
11/22/1989CN2048153U Automatic pressure release valve with adjustable water-level
11/22/1989CN2048152U 背压阀 Backpressure valve
11/22/1989CN2048151U Protective device for running water
11/21/1989US4881571 Modulating pressure operated pilot relief valve
11/21/1989US4881400 Continuous measuring diaphragm pressure gage
11/15/1989EP0342069A1 Flap valve for an aircraft
11/14/1989US4880030 Safety flow control fluid shutoff device
11/09/1989DE3813942A1 Safety valve with sealing at the piston guide
11/08/1989CN2047328U Pressure-reducing valve with timing control device
11/07/1989US4878648 Insert valve
11/07/1989US4878514 Heater control valve with flexible deflector
11/07/1989US4878512 Valve mechanism
11/07/1989US4878511 Valve assembly for a vehicular fuel tank
11/02/1989EP0340173A1 A vacuum limiting device
11/02/1989EP0340062A1 Filling limitation device for a fuel tank and automotive vehicle equipped with such a device
11/02/1989EP0339370A2 Fluid pressure regulator
11/02/1989DE3824089A1 Pilot-controlled proportional pressure-relief valve
11/02/1989DE3813286A1 Device for regulating the pressure of a pump
11/01/1989CN2046962U High-flow numerial-controlled regulating valve
11/01/1989CN2046961U Pressure-regulating pressure-restricted valve for pressure cooker
10/1989
10/31/1989US4877624 Digestion and sterilization methods and apparatus
10/31/1989US4876857 Shut off/pressure regulating valve for turbine engine
10/26/1989DE3812703A1 Ventilated cap for fluid reservoir
10/25/1989EP0338853A2 Depressurization valve
10/19/1989WO1989009902A1 Pressure relief device, and method
10/18/1989CN2046170U 减压阀 Valve
10/17/1989US4874012 Magnetic operator flow device
10/17/1989US4874010 Heater control valve
10/11/1989EP0336909A2 A valve for protecting ventilation openings of closed environments from explosion waves
10/11/1989EP0336307A2 Double-valve and membrane arrangement of non-return valve
10/11/1989CN2045802U Vehicle air compressor unlade valve
10/10/1989US4872639 Pilot-control safety valve
10/10/1989CA1262225A1 Floating seal valve assembly
10/05/1989WO1989009359A1 Improved pilot-assisted pressure relief valve
10/03/1989US4870989 High temperature safety relief system
09/1989
09/27/1989EP0334504A2 Fluid flow control devices
09/27/1989CN2045045U Air cut-off safety device
09/27/1989CN2045039U Pressure reducing valve with leakproof device
09/26/1989US4869288 Back pressure valve
09/26/1989CA1261371A1 Frangible ball valve connector
09/26/1989CA1261230A1 Differential pressure fluid flow regulating device
09/26/1989CA1260357A1 Diverter
09/21/1989WO1989008589A1 Hygienic pressure relief panel unit
09/21/1989DE3907152A1 Pressure control valve
09/19/1989US4867767 Condensate separating and discharging device with a specially dimensioned trap section
09/19/1989US4867198 Adjustable flow regulating valve
09/13/1989EP0332472A2 Tire deflation system
09/12/1989US4865074 High temperature safety relief system
08/1989
08/30/1989EP0330575A1 Hydraulic circuit comprising a safety valve for a hydraulic actuator
08/30/1989EP0137842B1 Fire resistant gate valve
08/29/1989US4860783 Apparatus for controlling the pressure of gases flowing through a conduit
08/29/1989US4860780 Earthquake safety valve shut-off
08/24/1989WO1989007727A1 Starter connection for progressive pressurising of pneumatic installations
08/23/1989CN2043310U Combined pressure restricting valve
08/23/1989CN2043309U Complex type steam valve
08/23/1989CN1034987A Antiimpact pressure safety valve
08/22/1989US4858642 Impact resistant pressure relief valve
08/17/1989DE3803487A1 Electromagnetically operated pilot-controlled pressure-limiting valve
08/16/1989EP0328472A2 Coupling incorporating a start-up valve for the gradual pressurisation of pneumatic installations
08/16/1989EP0327759A1 Bulk material container having a filter vent
08/16/1989EP0327599A1 Pipe-fracture safety valve
08/16/1989CN1034781A Pressure limited valve with dry chamber including spring
08/15/1989US4856553 Pump with valve adjusting screw
08/15/1989US4856549 Shuttle valve device
08/15/1989US4856547 Pressure relief valve
08/15/1989CA1258362A1 Method of making fluid flow regulators
08/10/1989WO1989007324A1 Gasket assembly and electrical power transformer including the same
08/09/1989CN2042550U Automatic valve for draining water and exhaust
08/09/1989CN2042549U Highly sealed safety valve
08/09/1989CN2042548U On-line adjuster for safety valve
08/03/1989DE3802839A1 Pressure-relief valve working free of friction
08/02/1989EP0326509A1 Impact resistant pressure relief valve
08/02/1989EP0325858A2 Pressure control valve
08/02/1989CN2042141U Muffling pressure-limiting valve
08/01/1989US4852600 Air actuated valve system with seismic controller
07/1989
07/27/1989WO1989006765A1 Volumetric, self-resetting, hydraulic fuse
07/26/1989EP0325194A2 Change-over relief valve for flowing fluids
07/26/1989CN1034126A Upper part cartridge
07/26/1989CN1004895B Telecontrolled operating device
07/19/1989CN1034049A Leading operated safety valve with single ball and double insurance
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