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 15 - Check valves
Patents for F16K 15 - Check valves (18,131)
11/1987
11/24/1987US4708084 System for distributing water flow between a reservoir and a water source
11/19/1987EP0245454A1 Pressure relief and vacuum vent valve
11/19/1987EP0245271A1 Automatic one-way fluid valves
11/18/1987CN86207529U Self-closed type valve inside under internal pressure
11/17/1987US4706706 Check valve and a seal for a check valve
11/17/1987US4706705 Check valve
11/10/1987CA1229104A1 Flow check prevention mechanism
11/07/1987CN86209336U Power-saving slowly closed non-retarn butterfly valve
11/05/1987WO1987006538A1 Valve for tyre and method for manufacturing such a valve
11/05/1987DE3713116A1 Rueckschlagventil Return valve
11/04/1987CN87205987U Cushioning type air valve spout of light inner tyre
11/03/1987US4703772 Disk valve for a reciprocating compressor
10/1987
10/28/1987EP0242603A1 Check valve
10/27/1987US4702457 Ball plug valve
10/27/1987US4702274 Quick disconnect for sewage system
10/22/1987WO1987006320A1 Valve operating without friction
10/22/1987WO1987006318A1 Check valve
10/21/1987EP0242349A2 Method for adapting a compressor valve to different operating conditions, and compressor valve therefor
10/21/1987EP0242281A1 Multipiston pump provided with blade valves
10/21/1987CN87202049U Low-speed closing check
10/21/1987CN87202027U Draining-stopping sphere-shell type gate for pumping station
10/20/1987US4701148 Filling valve for use in filling balloons
10/20/1987US4700741 Ball check valve
10/20/1987US4700740 Discharge valve
10/15/1987DE3612393A1 Non-return valve
10/14/1987EP0240660A1 Valve with a cap for pneumatic tyres
10/14/1987CN85107804A Controllabe one-way valve, bottom valve
10/13/1987US4698940 Sandblast shutoff valve
10/08/1987WO1987005987A1 Single flap valve for gas boiler
10/08/1987WO1987005980A1 Combined shut off and check valve
10/08/1987DE3610884A1 Valve diaphragm
10/07/1987EP0240429A1 Gas boiler with resonant combustion
10/06/1987US4698060 Pressure regulation system
10/06/1987CA1227722A1 In-line check valve having combined downstream poppet support and flow control elements
10/03/1987CN86203113U Air-tight device for bicycle tyre-valve inside without rubber tube
09/1987
09/30/1987EP0239451A1 Check valve, especially for a pressurised-water reactor
09/30/1987EP0238829A2 Ink jet printhead having a preloaded check valve
09/29/1987US4696322 Faucet valve with anti-siphon back flow preventer
09/29/1987CA1227398A1 Pump-actuated sequencing valve and system
09/23/1987EP0238201A2 Poppet valve assembly
09/23/1987EP0237681A1 Check valve
09/23/1987CN86209301U Shutter type one-way valve for natural ventilating vent
09/23/1987CN86207128U Self-sealed valve
09/22/1987US4694853 Wafer check valves
09/16/1987EP0237496A2 Improvement in a valve
09/15/1987US4693270 Check valve
09/15/1987US4693269 Check valve assembly for pipeline system
09/11/1987WO1987005374A1 Improvements in valves and in their automatic assembly
09/10/1987DE3703060A1 Valve for pneumatic tyres or the like and a cap for the latter
09/02/1987EP0233880A1 A check valve.
09/01/1987US4690169 Combined shut off and check valve
08/1987
08/26/1987EP0233445A1 Check valve
08/20/1987DE3603804A1 Non-return valve with pin for sewage pipes
08/19/1987EP0232858A1 Retention valve particularly for liquid-bearing conduits
08/18/1987US4687023 Ball check valve
08/18/1987US4687019 For use in oil well cementing operations
08/18/1987US4687014 Method and apparatus for reducing the response time of remotely controlled, hydraulic control systems
08/12/1987EP0231955A2 Discharging valve device for a compressor
08/12/1987EP0231582A2 Unidirectional fluid control valve
08/12/1987CN86205421U Valve inside of through way valve
08/06/1987DE3601853A1 Venting device for motor vehicles
08/05/1987EP0230711A1 Vacuum check valve assembly
08/04/1987US4684334 Inlet valve assembly for paint sprayer
08/04/1987US4683916 Normally closed automatic reflux valve
07/1987
07/30/1987DE3537157A1 Device for shutting off a pipeline, in particular drinking-water line
07/29/1987EP0230042A1 Twin-tube type shock absorber with a base valve portion structure coupled by caulking
07/28/1987US4682625 Springloaded shutoff valve apparatus
07/22/1987CN86108844A Check valve
07/21/1987US4681139 Elastomer ball check valve
07/21/1987US4681132 Check valve with preset cracking pressure
07/21/1987CA1224379A1 Vacuum check valve
07/21/1987CA1224378A1 Lined check valve
07/14/1987US4679596 Pressure relief valve
07/14/1987US4679584 Soft seat Y-pattern check valve
07/09/1987DE3600303A1 Non-return valve
07/08/1987EP0228033A2 Valve structure of hydraulic buffer
07/08/1987CN86202310U Highly sealed explosion-proof tyre valve
07/02/1987WO1987003934A1 A valve component for a frictionless guided valve
07/02/1987DE3541249C1 On-off seat-type valve controllable by hydraulic pressure pulses
07/01/1987EP0226875A1 Flat ring-type valve for a piston compressor
06/1987
06/30/1987US4677447 Ink jet printhead having a preloaded check valve
06/30/1987CA1223500A1 Flow valve
06/30/1987CA1223497A2 Backflow preventer apparatus
06/24/1987EP0072800B1 Control of fluid flow
06/23/1987US4674532 Check valve
06/23/1987US4674529 Check valve
06/18/1987WO1987003665A1 Faucet valve with anti-siphon back flow preventer
06/17/1987CN86204226U Leakproof duplex tyre valve
06/16/1987US4673000 Check valve assembly
06/16/1987US4672996 Self-regulating valve
06/16/1987CA1222927A1 Filling nozzle valve structure
06/09/1987US4671915 Method for making a glass precision valve
06/03/1987CN86205221U Tyre valve
06/03/1987CN86200228U 单向阀 Check valve
06/03/1987CN85203748U Slow closing check valve
06/02/1987US4669500 Check valve actuator
06/02/1987US4669498 Controllable air valve for an inflatable body
06/02/1987US4669497 Backflow preventing device
05/1987
05/27/1987EP0223696A1 Flow control valve, especially for feeding oil into a deep-frying vessel
05/27/1987EP0130211B1 Non-return valve for pulsating burners
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