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 25 - Details relating to contact between valve members and seats
Patents for F16K 25 - Details relating to contact between valve members and seats (2,498)
02/1983
02/15/1983US4373545 Double block and vent valve
02/09/1983EP0070910A1 Valve for handling solids capable of gas-pressure-tight closure against a gas pressure differential
01/1983
01/18/1983US4368753 Double-seat valve unit leakage control
01/05/1983EP0068749A1 Annular piston valve
12/1982
12/07/1982US4362180 Poppet valve and method of assembling same
11/1982
11/23/1982US4360039 Valves
11/03/1982EP0063762A1 Disc valve
11/02/1982US4356998 Self-closing tap valve
10/1982
10/19/1982US4354663 Valve construction for sand and slurry service
10/13/1982EP0062392A1 Valve system for controlling flowable toxic material such as particulate radioactive waste
09/1982
09/29/1982EP0060910A1 Double-seat valve with leak control
09/15/1982EP0059857A1 Cleanable valve for taking samples
08/1982
08/17/1982US4344453 Pipeline switch with leakage control and cleanable leakage cavity
07/1982
07/13/1982US4338689 Self-aligning valve assembly
07/06/1982US4337920 Valve
07/06/1982US4337788 High pressure valve
06/1982
06/15/1982CA1125726A1 Self-cleaning water faucet valve construction
06/02/1982EP0052953A1 Shut-off valve for high temperature erosive flow
05/1982
05/25/1982US4331316 Shut-off valve for high temperature erosive flow
04/1982
04/27/1982US4326554 Fluid control valve
04/27/1982CA1122583A1 Valve sealing device
04/22/1982EP0042403A4 Erosion resistant valve.
03/1982
03/23/1982US4320891 Nipple operated animal watering valve
03/02/1982CA1119076A1 Pushbutton diverter
01/1982
01/26/1982CA1117094A1 Flush valves
01/13/1982EP0043456A1 Machine element composed of ceramic oxide material
12/1981
12/30/1981EP0042403A1 Erosion resistant valve
12/15/1981US4305419 Self-cleaning water faucet valve construction
12/08/1981US4304251 Double seat valve with leak control
11/1981
11/24/1981CA1113078A1 Gate valve with position responsive interlock
11/10/1981US4299628 Internal combustion engine components
11/04/1981EP0039319A1 Double seat valve
10/1981
10/20/1981US4295633 Expansible device
10/06/1981US4292992 Valve for handling solids capable of gas-pressure-tight closure against a gas pressure differential
10/06/1981US4292991 Erosion resistant valve
09/1981
09/15/1981CA1109050A1 Vibration resistant valve
08/1981
08/04/1981US4281678 Throttling mud choke apparatus
06/1981
06/25/1981WO1981001734A1 Erosion resistant valve
06/16/1981US4273292 Self-closing shower head
06/09/1981US4272052 Flush valves
06/09/1981US4271860 Valve
05/1981
05/26/1981CA1101823A1 Erosion control trim for a control valve
05/05/1981US4265322 Compressed air feed control system for a tapping device
03/1981
03/24/1981US4257442 Choke for controlling the flow of drilling mud
03/03/1981CA1096844A2 Faucets
03/03/1981CA1096841A1 Faucets
02/1981
02/17/1981US4251274 Containing basalt
02/10/1981US4249717 Seal for a liquid valve
02/10/1981CA1095488A1 Valve mechanism for a control valve
02/03/1981US4248403 Plug assembly for movable plug valves
01/1981
01/20/1981CA1094040A1 Faucet valve with dual flow control
01/13/1981CA1093423A1 Valve
12/1980
12/30/1980US4241754 Pushbutton diverter
11/1980
11/25/1980US4235416 Vibration resistant valve
11/25/1980US4235257 Elastic seating element for a cutoff device
11/04/1980US4231388 Gate for use in a gate valve
09/1980
09/30/1980US4224963 Flow-control valve
09/30/1980US4224961 Tubular element for passing flowable media
06/1980
06/10/1980CA1079255A1 Vacuum breaker valve and stem packing assembly
05/1980
05/27/1980US4204557 Fluid flow control valve
05/20/1980CA1077912A1 Pipeline switch with leakage control and cleanable leakage cavity
04/1980
04/15/1980US4197873 Fluid operable valves
04/02/1980EP0009441A1 Draining valve and process for using a draining valve
04/01/1980US4195813 Valve
02/1980
02/26/1980US4190073 Choke for controlling the flow of drilling mud
08/1979
08/28/1979US4165859 Seal assembly
08/14/1979US4164236 Valve assembly with seat cleaning system
07/1979
07/31/1979CA1059496A1 Ventilated poppet damper
04/1979
04/10/1979CA1052228A1 Hydraulic valve with components formed to regulate and/or to eliminate the creation of severe electrokinetic streaming current, and its wall current and the method and criteria tobe followed in forming their metering edges which create the overall metering passageway
02/1979
02/20/1979US4140147 Butterfly valve having purge fluid supply means for the seal
01/1979
01/16/1979US4134570 Two volume flush valve
11/1978
11/28/1978CA1043221A1 Sleeve valve
10/1978
10/10/1978CA1040183A1 Valve with spring gate
09/1978
09/26/1978CA1039262A1 High-temperature bidirectional metal
09/12/1978US4112978 Valve for an opening of a pressure vessel
09/12/1978US4112965 Shutoff element
08/1978
08/01/1978US4103708 Ventilated poppet damper
05/1978
05/16/1978US4089504 Valve construction
03/1978
03/07/1978US4077603 Infinitesimal gas flow regulator
02/1978
02/28/1978US4076209 Improved tap
12/1977
12/20/1977US4063709 Butterfly valve
09/1977
09/27/1977US4050473 Valve seat cleaning mechanism
08/1977
08/30/1977US4044998 Web tip seat cup
08/09/1977US4040443 Sleeve valve
05/1977
05/10/1977US4022380 Fluid flow control valve
11/1976
11/16/1976US3991784 High/low safety valve
10/1976
10/26/1976US3988001 Variable flow control valve for use with dental syringes and the like
10/26/1976US3987529 Valve and method for manufacturing the same
07/1976
07/06/1976US3967811 All plastic valve construction
07/06/1976US3967808 Irrigation valve with metal seat
06/1976
06/22/1976US3964728 Self closing safety gate valve for viscous fluids
06/15/1976US3963211 Rotary valve
06/15/1976US3963049 Dual sealing solenoid valve
06/08/1976US3961876 Valve assembly
05/1976
05/25/1976US3958792 Valve with radially expansive valve plug
05/11/1976US3955795 Valve
04/1976
04/27/1976US3952994 Throttling and shut-off valve
02/1976
02/17/1976US3938541 Shaft seal for a check valve
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