ClassID:

152321

F16K17/30 - CPC Classification

Classification description:

Safety valves; Equalising valves, e.g. pressure relief valves; Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded

Recent Application in this class:
#1
20260153161
2026-06-04

PRESSURE REGULATING VALVE WITH PISTON

#2
20250383028
2025-12-18

VALVE

#3
20250369319
2025-12-04

UNLOADING VALVE AND A GAS LIFT SYSTEM AND A METHOD OF INSTALLING SUCH A GAS LIFT SYSTEM

#4
20250361945
2025-11-27

PRESSURE EQUALIZATION APPARATUS

#5
20250314319
2025-10-09

FAST-RESPONDING PASSIVE FLOW RATE LIMITING VALVE FOR HIGH PRESSURE GAS APPLICATIONS

#6
20250283546
2025-09-11

TWO-WAY ANGLE VALVE CAPABLE OF BUFFERING DEFLATION

#7
20250251051
2025-08-07

PRESSURE DRIVEN FLUID DELIVERY SYSTEM

#8
20250243941
2025-07-31

EXCESS FLOW VALVE AND TANK VALVE DEVICE PROVIDED WITH SAME

#9
20250198527
2025-06-19

PRESSURE RELEASE HOUSING

#10
20250075816
2025-03-06

FLUIDIC DEVICE COMBINING A NON-RETURN VALVE AND A DUAL-FLOW FLOW RESTRICTOR

#11
20250035224
2025-01-30

COMPACT INLINE OVER-PRESSURIZATION PROTECTION DEVICE

#12
20240426387
2024-12-26

EXCESS FLOW VALVE FOR CRYOGENIC FLUID TANK

#13
20240419196
2024-12-19

GAS NEGATIVE PRESSURE VALVE

#14
20240369148
2024-11-07

PRESSURE REGULATING VALVE WITH PISTON

#15
20240360913
2024-10-31

COMBINATION REGULATOR VALVE

#16
20240229951
2024-07-11

HYDRAULIC FUSE

#17
20240229939
2024-07-11

Valve assembly with adjustable spacer and noise reduction

#18
20240151315
2024-05-09

Pressure Valve for a Liquid

#19
20240125401
2024-04-18

VALVES AND CONTROL SYSTEMS FOR CLEAN FLUID PRESSURE EQUALIZATION AND DE-ENERGIZATION

#20
20240093797
2024-03-21

Telescoping spring retention assembly for a check valve

#21
20230383856
2023-11-30

Backflow prevention assembly having a cartridge with dual zone testing

#22
20230341057
2023-10-26

Flow rate control unit and water supply device with fine bubble generating arrangement incorporating flow rate control unit

#23
20230332702
2023-10-19

CHECK COVER ASSEMBLIES FOR BACKFLOW PREVENTION ASSEMBLIES WITH INTEGRATED TEST COCK PROTECTION SHROUD

#24
20230313508
2023-10-05

Compact valve assembly

#25
20230234633
2023-07-27

FLOW CONTROL VALVE, DAMPER AND STEERING DEVICE

#26
20230228338
2023-07-20

Excess flow valve with installation indicator

#27
20230228067
2023-07-20

Backflow prevention assembly having a cartridge with dual zone testing

#28
20230204113
2023-06-29

Valve

#29
20230151897
2023-05-18

Fuel nozzle with reduced flow tolerance

#30
20230147379
2023-05-11

Variable pressure control valve

#31
20230140314
2023-05-04

Reversible spring retention assembly for a valve

#32
20230126930
2023-04-27

Method of removing hydraulic fluid from an aircraft hydraulic system, an aircraft hydraulic system, and an aircraft

#33
20230064155
2023-03-02

GAS REGULATOR WITH OVERLOAD PROTECTION FUNCTION

#34
20230055857
2023-02-23

Pressure-reducing valve, valve unit, valve device, and leaf spring

#35
20220373093
2022-11-24

Diverted pressure regulator for a liquid

#36
20220325812
2022-10-13

Pressure release housing

#37
20220316613
2022-10-06

Gas pressure regulator

#38
20220290770
2022-09-15

Combination valve

#39
20220282836
2022-09-08

Differential pressure opening and excess flow closing valve for gas cylinder

#40
20220243834
2022-08-04

Pressure valve for a liquid

#41
20220213970
2022-07-07

Combination regulator valve

#42
20220205549
2022-06-30

Explosion protection valve for decoupling system parts or workpieces, comprising a bearing assembly for the valve closing body

#43
20220136613
2022-05-05

Pressure-reducing valve

#44
20220065732
2022-03-03

System and method for line pressure testing with isolation valve

#45
20220049786
2022-02-17

Check cover assemblies for backflow prevention assemblies with integrated test cock protection shroud

#46
20220049781
2022-02-17

Backflow prevention assembly with telescoping bias assembly and reversible valve member

#47
20220049722
2022-02-17

Multi-function orifice subassembly for flow limiters

#48
20220049487
2022-02-17

Check valve cartridge with flow guide for compact backflow prevention assembly

#49
20220025975
2022-01-27

Explosion protection valve for decoupling system parts or workpieces, comprising a sealing ring

#50
20220010885
2022-01-13

PRESSURE RELIEF VALVE

#51
20220003328
2022-01-06

CHECK VALVE AND VALVE DEVICE HAVING SAME

#52
20210353096
2021-11-18

Vent valve flow fuse

#53
20210299613
2021-09-30

Desalination system and method

#54
20210293212
2021-09-23

Pilot valve for pressure relief valve

#55
20210283443
2021-09-16

Valve for a firefighting installation, and installation thereof

#56
20210164577
2021-06-03

Fuel nozzle with reduced flow tolerance

#57
20210156483
2021-05-27

Fluid control valve

#58
20210131456
2021-05-06

Oil returning valve set with multi-stage throttling control

#59
20210048048
2021-02-18

Vent limiting device for use with fluid regulators

#60
20210046498
2021-02-18

Sprinkler elbow connector with integral pressure regulator

#61
20200400243
2020-12-24

Precision fuel metering check valve cartridge

#62
20200370546
2020-11-26

Variable displacement compressor

#63
20200290454
2020-09-17

Fuel tank safety valve

#64
20200278043
2020-09-03

Combination regulator valve

#65
20200208750
2020-07-02

Safety valve

#66
20200141506
2020-05-07

Deep set safety valve

#67
20200114755
2020-04-16

Ventilation flow rate regulator for a pressurized vehicle tank

#68
20200109791
2020-04-09

Pressure-Relief Device With a Variable Mass Flow Rate

#69
20200063879
2020-02-27

Bypass valve and pig having a bypass valve

#70
20200040919
2020-02-06

Vent limiting device for use with fluid regulators

#71
20190390497
2019-12-26

Regulating valve

#72
20190360598
2019-11-28

Bleed valves

#73
20190323619
2019-10-24

Multidirectional vent limiting devices for use with fluid regulators

#74
20190316698
2019-10-17

Pressure reducing valve

#75
20190310665
2019-10-10

Force equilibrium of a valve rod due to internal pressure equalization

#76
20190277418
2019-09-12

Pressure regulator valve

#77
20190271409
2019-09-05

Valve body having primary and secondary stem guides

#78
20190264820
2019-08-29

Vacuum-based energy-saving large-capacity precision pressure regulation valve

#79
20190264715
2019-08-29

Line rupture safeguard for a hydraulic cylinder

#80
20190242777
2019-08-08

Line pressure isolation valve

#81
20190168607
2019-06-06

Ventilation flow rate regulator for a pressurised tank of a vehicle

#82
20190125953
2019-05-02

Dialysis machine and constant flow regulator

#83
20190120394
2019-04-25

Safety valve and gas cylinder having same

#84
20190107206
2019-04-11

Valve for controlling coolant flow and fuel cell cooling system using the same

#85
20190072196
2019-03-07

Oil pump pressure relief valve layout

#86
20190047335
2019-02-14

Valve assembly for a tire inflation system

#87
20180335158
2018-11-22

Multidirectional vent limiting devices for use with fluid regulators

#88
20180275687
2018-09-27

SPIRAL SPRING FLOW REGULATOR

#89
20180259084
2018-09-13

Strainer assembly for internal valve

#90
20180259083
2018-09-13

Valve body having primary and secondary stem guides

#91
20180259079
2018-09-13

Spring seat for an internal valve

#92
20180259078
2018-09-13

Spring seat for an internal valve

#93
20180245700
2018-08-30

Pressure reducing valve unit

#94
20180239375
2018-08-23

Gas delivery valve and methods of use thereof

#95
20180209704
2018-07-26

Throttling device and refrigeration cycle

#96
20180202567
2018-07-19

Throttling device and refrigeration cycle

#97
20180149395
2018-05-31

Throttle device and refrigeration cycle system with same

#98
20180128392
2018-05-10

Flow rate safety valve

#99
20180106279
2018-04-19

Waste water air stop valve

#100
20180105034
2018-04-19

Fuel tank safety valve

#101
20180087479
2018-03-29

Protection device for limiting pump cavitation in common rail system

#102
20180064561
2018-03-08

ADJUSTMENT-FREE MULTI-STAGE PROSTHESIS AIR CYLINDER

#103
20180051529
2018-02-22

Method and valve assembly for flushing of debris

#104
20180038511
2018-02-08

Throttle device and refrigeration cycle system with same

#105
20180038502
2018-02-08

Multistage automated thermal balancing valve

#106
20180031141
2018-02-01

Switch valve unit, fluid switch and kit of fluid switches

#107
20180029062
2018-02-01

Fluid valve, in particular a return valve for a painting system

#108
20180010705
2018-01-11

THROTTLE DEVICE AND REFRIGERATING CYCLE

#109
20170261118
2017-09-14

Flow limiter valve

#110
20170219111
2017-08-03

Pressure regulating valve

#111
20170198641
2017-07-13

Air turbine starter with lubrication valve

#112
20170147014
2017-05-25

Pressure reducing valve

#113
20170120207
2017-05-04

Valve for a water-supply system

#114
20170108879
2017-04-20

Flow direction restriction valve mechanism and valve device

#115
20170101937
2017-04-13

Flow limiting duct vent valves and gas turbine engine bleed air systems including the same

#116
20170030616
2017-02-02

Throttle device, and refrigeration cycle system including same

#117
20170002942
2017-01-05

Valve device capable of maintaining safe pressure of pressure vessel

#118
20160319942
2016-11-03

In-line servicable shutoff valve with excess flow

#119
20160298777
2016-10-13

SELF REGULATING PRESSURE THROTTLE

#120
20160281874
2016-09-29

Safety valve

#121
20160281869
2016-09-29

Spherical automatic flow emergency restrictor (S.A.F.E.R.) valve

#122
20160258544
2016-09-08

Nozzle-type check valve with piston

#123
20160069463
2016-03-10

Automatic shut-off device

#124
20160053903
2016-02-25

Timing valve and kick-down valve

#125
20160010752
2016-01-14

Fluid flow control devices and systems

#126
20150362073
2015-12-17

Hole plug

#127
20150308222
2015-10-29

Self-regulating flow control device

#128
20150285394
2015-10-08

Fuel vapor control device

#129
20150285393
2015-10-08

Pressure reducing valve

#130
20150268672
2015-09-24

Pressure regulator for hydrogen storage system

#131
20150260305
2015-09-17

Shut-off valve

#132
20150090347
2015-04-02

Fluid valve, in particular a return valve for a painting system

#133
20150020516
2015-01-22

Hydraulic circuit

#134
20150000769
2015-01-01

Anti-shake flow-limiting cutoff valve

#135
20140264106
2014-09-18

Flow rate control device

#136
20140203546
2014-07-24

Connecting structure for vacuum system

#137
20140116539
2014-05-01

Relief valve for overload protection

#138
20140110618
2014-04-24

High pressure relief valve piston

#139
20140110002
2014-04-24

Pipeline pressure isolation systems and devices

#140
20140110001
2014-04-24

Pipeline pressure isolation systems and devices

#141
20140102548
2014-04-17

Automatic shut-off device

#142
20140014200
2014-01-16

THROUGHFLOW RATE LIMITING DEVICE

#143
20130340890
2013-12-26

Overfill prevention valve

#144
20130263942
2013-10-10

Pressure reducing valve

#145
20130263931
2013-10-10

Pressure limiting valve and alternative method for testing a backflow preventer using the same

#146
20130248020
2013-09-26

Expansion valve with variable opening degree

#147
20130152776
2013-06-20

Pneumatic drive

#148
20130146166
2013-06-13

AUTO SHUTOFF DEVICE

#149
20130140881
2013-06-06

Brake fluid pressure retainer device

#150
20130087222
2013-04-11

Flow control valves

#151
20130075644
2013-03-28

Valve seat body and valve device

#152
20130037132
2013-02-14

Pressure-control Valve

#153
20130032115
2013-02-07

Valve for controlling a gas flow, liquid separator, ventilation system and internal combustion engine comprising such a valve

#154
20130032100
2013-02-07

Nuclear steam generator steam nozzle flow restrictor

#155
20130025724
2013-01-31

EXCESS FLOW VALVE

#156
20130025712
2013-01-31

Pipe break valve device

#157
20120241018
2012-09-27

OVER-PRESSURE PROTECTION DEVICE

#158
20120160347
2012-06-28

Device for burst pipe safety

#159
20120125455
2012-05-24

Gas flow monitor

#160
20120114849
2012-05-10

Fluid valve, particularly return valve for a painting system

#161
20120048395
2012-03-01

Device for inserting a shut-off device in a pipeline

#162
20120012678
2012-01-19

Sprinkler with pressure regulation

#163
20120012200
2012-01-19

Decompression valve

#164
20110192701
2011-08-11

Ventilation device for a hydraulic cylinder

#165
20110147016
2011-06-23

Fluid Selective Check Valve

#166
20110061748
2011-03-17

Water appliance having a flow control unit and a filter assembly

#167
20110023983
2011-02-03

GAS FLOW MONITOR

#168
20110017333
2011-01-27

Needle-type stepped cylindrical stopper for automatic control of water consumption in pipelines

#169
20100229954
2010-09-16

Method and apparatus for controlling fluid pressure

#170
20100218832
2010-09-02

MEDICAL GAS COUPLING

#171
20100193718
2010-08-05

Water cut-off valve

#172
20100154902
2010-06-24

Hydraulic Shut-Off Valve with Surge Resistant Chamber

#173
20100147401
2010-06-17

Sprinkler with pressure regulation

#174
20100108160
2010-05-06

FEATHER GASKET FOR AN EXCESS FLOW VALVE

#175
20100108144
2010-05-06

Flow controlled Y connector

#176
20100101666
2010-04-29

Pressure regulator for hydrogen storage system

#177
20100101540
2010-04-29

Gas engine regulator

#178
20100095744
2010-04-22

Leak detector

#179
20100078081
2010-04-01

TEMPERATURE CONTROL VALVE

#180
20100012202
2010-01-21

Gas flow monitor

#181
20100012200
2010-01-21

CONTROL SYSTEM FOR A HYDRAULIC ELEMENT

#182
20090320940
2009-12-31

CONNECTOR CLAMP WITH PRESSURE VALVE

#183
20090266425
2009-10-29

Excess flow valves

#184
20090250928
2009-10-08

Anti-flooding device

#185
20090107563
2009-04-30

SAFETY VALVE HAVING PISTON WITH MODIFIED ORIFICE

#186
20090058074
2009-03-05

Blocking device

#187
20090032123
2009-02-05

Check valve

#188
20090032121
2009-02-05

Check Valve

#189
20090007889
2009-01-08

Three position fuel line check valve for relief of diurnal pressure

#190
20080289700
2008-11-27

High pressure safety valve, system and method

#191
20080185052
2008-08-07

SAFETY SHUT OFF VALVE FOR USE IN HYDRAULIC SYSTEM

#192
20080185047
2008-08-07

Cartridge insert valve

#193
20080178946
2008-07-31

Excess flow valve

#194
20080066806
2008-03-20

Pneumatic safety valve

#195
20080035215
2008-02-14

Hydraulic System Safety Shut Off Valve

#196
20080023208
2008-01-31

Automatic pressure regulating valve for a pneumatic tool

#197
20080006330
2008-01-10

A Throttle Mechanism

#198
20070267075
2007-11-22

Excess flow valves

#199
20070261403
2007-11-15

Pressure shuttle

#200
20070221179
2007-09-27

Fuel line check valve system for relief of diurnal pressure

#201
20070095330
2007-05-03

Three position fuel line check valve for relief of diurnal pressure

#202
20070062585
2007-03-22

Gas cylinder dispensing valve

#203
20070051408
2007-03-08

Safety valve

#204
20070034261
2007-02-15

Spill prevention system with safety valves

#205
20070007364
2007-01-11

Sprinkler with pressure regulation

#206
20060289067
2006-12-28

Method and apparatus for pneumatic regulation including a high-pressure reserve

#207
20060272715
2006-12-07

Gas cylinder valve assembly

#208
20060169333
2006-08-03

Combination excess-flow/back-flow valve

#209
20060137745
2006-06-29

Gas pressure regulator

#210
20060124174
2006-06-15

Valve assembly

#211
20060113835
2006-06-01

Electronically regulated vehicle brake system

#212
20060070663
2006-04-06

Safety valve assembly having set and reset mechanisms

#213
20060060251
2006-03-23

Gas cylinder dispensing valve

#214
20060054218
2006-03-16

Safety valve assembly having reset mechanism

#215
20060042688
2006-03-02

Fluid flow regulator for swimming pool cleaning system

#216
20060021658
2006-02-02

Automatic flow rate control valve

#217
20060000510
2006-01-05

Method and apparatus for pneumatic regulation a high-pressure reserve

#218
20050284521
2005-12-29

Auto-drain valve of air compressor

#219
20050268967
2005-12-08

Surge suppression and safety cut-off valve

#220
20050236064
2005-10-27

Ball and socket breakaway fitting

#221
20050211302
2005-09-29

Valve arrangement in a hydraulic circuit, use of the same and arrangement for controlling a hydraulic vehicle drive

#222
20050199290
2005-09-15

Gas safety device

#223
20050199289
2005-09-15

Flow control valve

#224
20050121643
2005-06-09

Lighter with improved thermodynamics

#225
20050116114
2005-06-02

Normally open reverse flow flapper valve

#226
20050092368
2005-05-05

Fluid control valve

#227
20050076951
2005-04-14

Pressure actuated valve

#228
20050022872
2005-02-03

Combination shut-off and resetable excess flow valve

#229
20050005972
2005-01-13

Upgrading automatic transmissions

#230
18530004
2025-04-15

Mass and/or spring assisted rupture disc

#231
17099891
2022-04-19

Double poppet check valve for low and high flow rates