ClassID:

152571

F16K37/0091 - CPC Classification

Classification description:

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; For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters

Recent Application in this class:
#1
20260139762
2026-05-21

MULTIPORT ROTARY VALVE ASSEMBLY HAVING AT LEAST ONE ANCILLARY TANK OR CATCH POT

#2
20260117889
2026-04-30

DEDICATED MONITORING AND REPORTING APPARATUSES FOR A BACKFLOW PREVENTER (BFP) OF A REDUCED PRESSURE ZONE (RPZ) TYPE, A REPORT APPARATUS FOR PREVENTING CONVERSION AND PREDICTIVE MAINTENANCE, DETECTING TURBIDITY IN THE WATER, AND INDICATING SANITARY CONDITION OF THE BFP BASED ON DATA ANALYSIS OF DISCHARGED WATER WITH CONTINUOUS MONITORING

#3
20260098594
2026-04-09

WIRELESS BACKFLOW ALERT SYSTEM

#4
20260098593
2026-04-09

DIAGNOSING PART BEHAVIOR ON A CONTROL VALVE

#5
20260073736
2026-03-12

PREDICTION DEVICE, PREDICTION METHOD, AND PREDICTION PROGRAM

#6
20260071694
2026-03-12

SYSTEM AND METHOD FOR DETERMINING PRESENCE OF CONTAMINANTS IN A FUEL VALVE

#7
20250361987
2025-11-27

SYSTEMS AND METHODS FOR MONITORING VALVE STATUS

#8
20250277530
2025-09-04

PRESS TO SPECIFICATION SOLENOID VALVE ASSEMBLY

#9
20250271074
2025-08-28

BUTTERFLY VALVE CONTROL METHOD AND DEVICE

#10
20250257815
2025-08-14

PRESSURE RELIEF VALVE WITH REDUNDANT PRESSURE SENSING

#11
20250243948
2025-07-31

Fluid Control Valve With Performance Monitor

#12
20250188720
2025-06-12

FLUID DETECTION SYSTEMS AND METHODS USING THE SAME

#13
20250155051
2025-05-15

SYSTEMS AND METHODS FOR DETERMINING FAILURE IN A BACK PRESSURE BALANCED RELIEF VALVE

#14
20250129856
2025-04-24

FLUID CONTROL VALVE AND FLUID CONTROL DEVICE

#15
20250075823
2025-03-06

Direction Change Valve Failure Prediction System and Method, and Direction Change Valve Failure Inspection System and Method

#16
20250075390
2025-03-06

WASHING MACHINE FLUID SYSTEM DIAGNOSIS USING SOUND SIGNALS

#17
20250052338
2025-02-13

VALVE TESTING

#18
20250020238
2025-01-16

VALVE MODULE AND METHOD FOR OPERATING SUCH A VALVE MODULE

#19
20240427356
2024-12-26

FLOW RATE ADJUSTING DEVICE AND CONTROL METHOD OF FLOW RATE ADJUSTING DEVICE

#20
20240426396
2024-12-26

PNEUMATIC VALVE ARRANGEMENT

#21
20240410494
2024-12-12

Systems and methods for a fuel refill pressure relief valve

#22
20240377000
2024-11-14

Warning device for valve maintenance

#23
20240369157
2024-11-07

SMART BACK PRESSURE VALVE AND METHODS OF USE

#24
20240360918
2024-10-31

FLUID CONTROL VALVE AND FLUID CONTROL DEVICE

#25
20240353025
2024-10-24

SYSTEMS AND METHODS FOR MONITORING A VALVE

#26
20240353024
2024-10-24

PIPE ARRANGEMENT FOR TRANSPORTING A TEMPERATURE CONTROL MEDIUM

#27
20240328536
2024-10-03

Emergency isolation valve control design

#28
20240318745
2024-09-26

SUBSEA TREE VALVE TESTING

#29
20240318737
2024-09-26

SELF-POWERED, MULTI-SENSING, AUTOMATIC SHUT-OFF VALVE

#30
20240288093
2024-08-29

System, Method, and Apparatus for Monitoring Restroom Appliances

#31
20240247735
2024-07-25

DETECTION OF SAFE ACTIVATION OF SHUTDOWN VALVES AND BLOWDOWN VALVES

#32
20240238945
2024-07-18

VALVE APPARATUS AND VACUUM HANDLING APPARATUS HAVING A VALVE APPARATUS

#33
20240200689
2024-06-20

METHOD FOR DIAGNOSING A PROCESS VALVE ASSEMBLY AND DIAGNOSTIC DEVICE

#34
20240175519
2024-05-30

Systems And Methods To Detect And Monitor Valve Positioning In A Water Pipe Distribution System

#35
20240159328
2024-05-16

MONITORING AN ANTI-LEAK VALVE IN A JET ENGINE

#36
20240093797
2024-03-21

Telescoping spring retention assembly for a check valve

#37
20240084921
2024-03-14

Valve System

#38
20240068594
2024-02-29

Vacuum Relief Valve for Railroad Tank Car

#39
20240068593
2024-02-29

INTERFACE ADAPTER FOR A CONTROL VALVE AND CONTROL VALVE WITH AN INTERFACE ADAPTER

#40
20240044421
2024-02-08

RESIDUAL PRESSURE EXHAUST AIR CIRCUIT AND RESIDUAL PRESSURE EXHAUST VALVE

#41
20240011260
2024-01-11

Wireless communication system within a mechanical room

#42
20230414359
2023-12-28

TESTING APPARATUS FOR PROSTHETIC DEVICE

#43
20230392712
2023-12-07

Pneumatically-operated emergency isolation valve switchover kit

#44
20230383856
2023-11-30

Backflow prevention assembly having a cartridge with dual zone testing

#45
20230349486
2023-11-02

Monitoring energy use on flow controls

#46
20230341068
2023-10-26

Diagnostic Valve Island

#47
20230332702
2023-10-19

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

#48
20230314045
2023-10-05

Fluid system power-on self test

#49
20230313508
2023-10-05

Compact valve assembly

#50
20230304885
2023-09-28

Valve seal integrity verification systems and methods

#51
20230287988
2023-09-14

Pneumatically controlled valve unit, valve system, and method of operating a valve unit

#52
20230258530
2023-08-17

Device and Method for Testing Vessel Pressure Relief Valves

#53
20230228067
2023-07-20

Backflow prevention assembly having a cartridge with dual zone testing

#54
20230167917
2023-06-01

Valve assemblies with integrated temperature control

#55
20230160488
2023-05-25

APPARATUS, PROCESSING DEVICE AND METHODS FOR RELIEVING PRESSURE AND SYSTEM HAVING THE APPARATUS

#56
20230140314
2023-05-04

Reversible spring retention assembly for a valve

#57
20230134915
2023-05-04

SYSTEMS AND METHODS OF FLOW CONTROL VALVES WITH MANIFOLDS

#58
20230121412
2023-04-20

PNEUMATICALLY-OPERATED EMERGENCY ISOLATION VALVE SWITCHOVER KIT

#59
20230096922
2023-03-30

Pressurized dual packing seal valve

#60
20230092572
2023-03-23

Valve arrangement and method

#61
20230085984
2023-03-23

Button, display device, shower control device, and control method thereof

#62
20230078399
2023-03-16

Valve calibration system and calibration method

#63
20230071698
2023-03-09

Systems and methods for determining failure in a back pressure balanced relief valve

#64
20230058181
2023-02-23

Fluid component body with leak test passages

#65
20230003318
2023-01-05

Valve for adjusting a fluid flow and methods for use in connection with such a valve

#66
20220412483
2022-12-29

Differential pressure loss valve

#67
20220412482
2022-12-29

Process valve apparatus and method

#68
20220357254
2022-11-10

Assembly and method for pressure testing

#69
20220349775
2022-11-03

SYSTEM AND METHOD FOR LEAK DETECTION BASED ON PRV OUTLET PRESSURE MONITORING

#70
20220331633
2022-10-20

Fire fighting systems and methods

#71
20220260467
2022-08-18

Apparatus for conducting a hydraulic proof test

#72
20220178467
2022-06-09

Valve testing

#73
20220178121
2022-06-09

Fluid detection systems and methods using the same

#74
20220112961
2022-04-14

In-line testing of pressure safety valves

#75
20220066480
2022-03-03

Flow controller, valve arrangement and method

#76
20220049786
2022-02-17

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

#77
20220049781
2022-02-17

Backflow prevention assembly with telescoping bias assembly and reversible valve member

#78
20220049487
2022-02-17

Check valve cartridge with flow guide for compact backflow prevention assembly

#79
20220034416
2022-02-03

System And Method For Detecting Safe Operating Conditions And Maintained Integrity In A Pressure Safety Valve

#80
20220025982
2022-01-27

Gas safety valve and gas supply line

#81
20220025878
2022-01-27

Diaphragm pump leak detection

#82
20220018461
2022-01-20

SOLENOID VALVE DIAGNOSTIC SYSTEM

#83
20220010891
2022-01-13

System, method, and apparatus for monitoring restroom appliances

#84
20220003335
2022-01-06

Method for operating a valve, associated electronic control unit, and valve drive

#85
20210404577
2021-12-30

Diagnostic device and method for solenoid valves

#86
20210381621
2021-12-09

BACKFLOW TESTING DEVICE

#87
20210372096
2021-12-02

Smart and connected backflow preventer assembly

#88
20210364101
2021-11-25

Fuel monitoring system

#89
20210341327
2021-11-04

Methods and apparatus for quantifying pneumatic volume usage via valve controllers

#90
20210341078
2021-11-04

Systems and methods for determining failure in a back pressure balanced relief valve

#91
20210302053
2021-09-30

Systems and methods for characterizing variable-air-volume (VAV) valves for use in HVAC systems

#92
20210301942
2021-09-30

Gas inspection method, substrate processing method, and substrate processing system

#93
20210278013
2021-09-09

Method for verifying the operability of a safety valve

#94
20210277746
2021-09-09

INSTRUMENTATION SYSTEM FOR DETERMINING RISK FACTORS

#95
20210270387
2021-09-02

METHOD OF AND APPARATUS FOR FUNCTIONALLY TESTING A PRESSURE ACTUATED REGULATOR

#96
20210247263
2021-08-12

System and method for leak detection based on PRV outlet pressure monitoring

#97
20210245726
2021-08-12

Degradation detection system, brake control device, and degradation detection method

#98
20210208611
2021-07-08

Valve assembly with integrated flow sensor controller

#99
20210199214
2021-07-01

System for testing a valve

#100
20210199103
2021-07-01

Diaphragm pump leak detection

#101
20210137682
2021-05-13

Testing apparatus for prosthetic device

#102
20210131459
2021-05-06

Valve device and method for anticipating failure in a solenoid valve assembly in a manifold assembly

#103
20210116324
2021-04-22

Apparatus for detecting air tightness

#104
20210080981
2021-03-18

Valve assembly and system used to control flow rate of a fluid

#105
20210047213
2021-02-18

Faucet configured to discharge ozone water

#106
20200386654
2020-12-10

Test device and test method for dynamic characteristics of spring-loaded safety valve

#107
20200370677
2020-11-26

Backflow testing device

#108
20200362988
2020-11-19

Valve monitoring system for a coaxial dual-safety valve

#109
20200358852
2020-11-12

Wireless communication system within a mechanical room

#110
20200355576
2020-11-12

Backflow prevention system test cock with a fluid sensor

#111
20200332917
2020-10-22

Flow resistance insert and a flow rate measuring or flow rate control means

#112
20200312680
2020-10-01

MULTIZONE FLOW DISTRIBUTION SYSTEM

#113
20200309285
2020-10-01

Microfluidic injection and manifold assembly

#114
20200249706
2020-08-06

High integrity protection system for hydrocarbon flow lines

#115
20200240546
2020-07-30

Block and fluid control device

#116
20200237515
2020-07-30

Testing apparatus for prosthetic device

#117
20200217433
2020-07-09

Valve assemblies with integrated temperature control

#118
20200208785
2020-07-02

Methods for reducing transmix production on petroleum pipelines

#119
20200158260
2020-05-21

Differential pressure loss valve

#120
20200149658
2020-05-14

Microfluidic analysis component and production method

#121
20200149649
2020-05-14

Pressurized fluid system including an automatic bleed valve arrangement; components; and, methods

#122
20200131927
2020-04-30

System and method for detecting deterioration of a control valve

#123
20200124457
2020-04-23

Predictive diagnostics systems and methods using vacuum pressure control valves

#124
20200072373
2020-03-05

Valve assembly with pressure disturbance rejection and fault detection and diagnosis

#125
20200056792
2020-02-20

Determination of hydronic valve opening point

#126
20200004276
2020-01-02

Electric valve including manual override

#127
20190368631
2019-12-05

Method for monitoring a mechanical system

#128
20190366663
2019-12-05

Method of detecting tire mold bladder leakage by smell

#129
20190360608
2019-11-28

Energy saving system utilizing temperature sensing flow control valve to control chilled water circulation

#130
20190360292
2019-11-28

Testable back pressure valve and pressure testing system therefor

#131
20190353385
2019-11-21

Systems and methods for flow estimation using differential pressure sensor across valve

#132
20190353278
2019-11-21

System, method, and apparatus for monitoring restroom appliances

#133
20190316706
2019-10-17

Method for monitoring a device for regulating the flow of a gas and a regulating system employing said method

#134
20190294184
2019-09-26

High integrity protection system for hydrocarbon flow lines

#135
20190294183
2019-09-26

HIGH INTEGRITY PROTECTION SYSTEM FOR HYDROCARBON FLOW LINES

#136
20190293201
2019-09-26

Target opening degree estimator and pressure adjustment vacuum valve

#137
20190270125
2019-09-05

Liquid supplying device and liquid supplying method

#138
20190257443
2019-08-22

SYSTEM FOR MANAGING FLOW-STATE OF FLUID

#139
20190249798
2019-08-15

Determining the operability of a fluid driven safety valve

#140
20190242493
2019-08-08

Fluid control valve diagnostic device, fluid control device, and fluid control valve diagnostic program

#141
20190211941
2019-07-11

SYSTEM AND VALVE FOR WATER USE MONITORING AND CONTROL

#142
20190211851
2019-07-11

Method and system for monitoring health of a hydraulic fluid subsystem

#143
20190178415
2019-06-13

Valve electronics and valve arrangement

#144
20190170047
2019-06-06

STOP VALVE, SCR SYSTEM, AND METHOD FOR DETECTING LEAKS AND/OR IDENTIFYING VARIATIONS IN METERED AMOUNTS

#145
20190072452
2019-03-07

VALVE MANIFOLD

#146
20180355893
2018-12-13

Fluid system and process valve

#147
20180350627
2018-12-06

Apparatus and method for gas delivery in semiconductor process chambers

#148
20180335158
2018-11-22

Multidirectional vent limiting devices for use with fluid regulators

#149
20180328542
2018-11-15

Methods for reducing transmix production on petroleum pipelines

#150
20180321000
2018-11-08

Cooling apparatus capable of determining valve malfunction

#151
20180299342
2018-10-18

Pinch Valve and Method for Operating a Pinch Valve

#152
20180281026
2018-10-04

Liquid supplying device and liquid supplying method

#153
20180266584
2018-09-20

Data-driven unsupervised algorithm for analyzing sensor data to detect abnormal valve operation

#154
20180266198
2018-09-20

System and method for monitoring the state of a choke valve in a managed pressure drilling system

#155
20180259075
2018-09-13

Vacuum valve with optical sensor

#156
20180238467
2018-08-23

SYSTEM AND METHODS FOR OPERATION OF A BLOWOUT PREVENTOR SYSTEM

#157
20180223785
2018-08-09

Method and system for testing operation of solenoid valves

#158
20180216742
2018-08-02

System and valve for water use monitoring and control

#159
20180202891
2018-07-19

Pressure testing systems with safety interlock

#160
20180196446
2018-07-12

High pressure valve and transmission safety checks

#161
20180195638
2018-07-12

Fuel monitoring system

#162
20180163896
2018-06-14

METHOD FOR DETERMINING A STATE VARIABLE OF A VALVE DIAPHRAGM OF AN ELECTRONICALLY CONTROLLED AND MOTOR-DRIVEN DIAPHRAGM VALVE, AND DIAPHRAGM VALVE SYSTEM

#163
20180162181
2018-06-14

Central tyre inflation system and method

#164
20180156488
2018-06-07

Combined isolation valve and check valve with integral flow rate pressure, and/or temperature measurement and field configurability

#165
20180119398
2018-05-03

SONIC VALVE

#166
20180112798
2018-04-26

Methods and apparatus of testing a solenoid valve of an emergency valve via a positioner

#167
20180112797
2018-04-26

Methods and apparatus of assessing a test of a solenoid valve via a positioner

#168
20180112796
2018-04-26

Methods and apparatus of stabilizing a valve positioner when testing a solenoid valve

#169
20180112795
2018-04-26

Time-series analytics for control valve health assessment

#170
20180106698
2018-04-19

Human-machine interface for gas valve

#171
20180103018
2018-04-12

Systems and methods for executing cryptographic operations across different types of processing hardware

#172
20180059069
2018-03-01

Methods and systems for monitoring quality of hydraulic fluid in electro-hydraulic (EH) valve

#173
20180045331
2018-02-15

Automated operation of wellsite equipment

#174
20180023768
2018-01-25

Methods for reducing transmix production on petroleum pipelines

#175
20170343968
2017-11-30

Method for detection of diagnosing control valve stiction

#176
20170343402
2017-11-30

Flow rate control device

#177
20170343126
2017-11-30

Venting and/or bleeding valve

#178
20170285668
2017-10-05

PRESSURE RELIEF VALVE APPARATUS AND AN ELECTRONIC SYSTEM FOR CONTROLLING THE SAME

#179
20170276258
2017-09-28

Positioner

#180
20170261123
2017-09-14

Systems and methods for electrohydraulic valve calibration

#181
20170241566
2017-08-24

Replacement necessity determination device for snap-in valve

#182
20170241559
2017-08-24

Valve arrangement

#183
20170241558
2017-08-24

Pressurized fluid system including an automatic bleed value arrangement; components; and, methods

#184
20170226921
2017-08-10

Method for operating a fluid circuit of a motor vehicle, and corresponding fluid circuit

#185
20170219117
2017-08-03

Integrated flow control valve with flowrate feedback

#186
20170204990
2017-07-20

Gas valve with electronic health monitoring

#187
20170198831
2017-07-13

SYSTEM AND METHOD FOR MONITORING PERFORMANCE OF RELIEF VALVES IN A HYDRAULIC SYSTEM

#188
20170191681
2017-07-06

Combination isolation valve and check valve with integral flow rate, pressure, and/or temperature measurement with wireless power

#189
20170191579
2017-07-06

Universal external isolation and B and B valve skid for industrial gas appliances

#190
20170168508
2017-06-15

System, method, and apparatus for optimizing a timing of a flush valve

#191
20170167631
2017-06-15

System, method, and apparatus for monitoring restroom appliances

#192
20170167123
2017-06-15

System, method, and apparatus for optimizing a timing of a flush valve

#193
20170122458
2017-05-04

Hot water heater systems and methods for monitoring electronic mixing valves

#194
20170115002
2017-04-27

Gas valve with communication link

#195
20170102095
2017-04-13

Fluid control valve and recording medium with control program thereof recorded therein

#196
20170074408
2017-03-16

Sensor-enabled gate valve

#197
20170067578
2017-03-09

DETECTION OF HIGH STAGE VALVE LEAKAGE BY PRESSURE LOCKUP

#198
20170060144
2017-03-02

Safety valve control system and method of use

#199
20170051478
2017-02-23

Self-maintaining automatic flushing valve with internal freeze protection

#200
20160377193
2016-12-29

Valve having a sensor system within a valve housing that includes a sensor arranged on a groove attached to a valve plate

#201
20160341627
2016-11-24

Valve manifold

#202
20160291606
2016-10-06

Flow rate controlling valve

#203
20160290523
2016-10-06

Electrohydraulic valve calibration system and method

#204
20160274594
2016-09-22

Positioner

#205
20160273676
2016-09-22

Pressure control for calibrating process control devices

#206
20160223089
2016-08-04

Choke Valve Wear Monitoring System and Method

#207
20160201572
2016-07-14

Transient fault detection methods and systems

#208
20160186890
2016-06-30

Method for monitoring a valve of an aircraft engine

#209
20160139609
2016-05-19

Mass flow controller with onboard diagnostics, prognostics, and data logging

#210
20160084405
2016-03-24

ONLINE FULL STROKE TESTING OVERPRESSURIZATION SAFETY RELIEF VALVE

#211
20160077531
2016-03-17

Gas valve with electronic health monitoring

#212
20160069473
2016-03-10

Gas valve with electronic valve proving system

#213
20160038662
2016-02-11

Device having a flow channel, a nonreturn valve, and a flow detector that detects a position of the nonreturn valve

#214
20150354724
2015-12-10

System and method for calibrating electrohydraulic valve

#215
20150345710
2015-12-03

STEAM VALVE DRIVING DEVICE AND STEAM VALVE

#216
20150323936
2015-11-12

Methods and apparatus to partial stroke test valves using pressure control

#217
20150285399
2015-10-08

Visualization of tests on lift-type check valves using phased array sequence scanning

#218
20150267840
2015-09-24

Solenoid transmission hydraulic model method

#219
20150240968
2015-08-27

Apparatus for fluid control device leak detection

#220
20150219223
2015-08-06

Sensor-enabled gate valve

#221
20150211648
2015-07-30

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

#222
20150090003
2015-04-02

POSRV PERFORMANCE EVALUATION TEST APPARATUS AND CONTROL SYSTEM OF THE SAME

#223
20150059886
2015-03-05

Method of cavitation/flashing detection in or near a process control valve

#224
20140360604
2014-12-11

Combination isolation valve and check valve with integral flow rate, pressure, and/or temperature measurement

#225
20140261795
2014-09-18

Pressure regulators with filter condition detectors

#226
20140261740
2014-09-18

System for detecting that a valve should be replaced and a method of use thereof

#227
20140261703
2014-09-18

METHOD TO DETECT VALVE DEVIATION

#228
20140230905
2014-08-21

CONDENSATE DRAINAGE MEANS WITH FAULT MONITORING

#229
20140225015
2014-08-14

Method and apparatus for controlling gas flow via a gas shut-off valve assembly

#230
20140225014
2014-08-14

Method and apparatus for controlling gas flow via a gas shut-off valve assembly

#231
20140220469
2014-08-07

Sensor integrated glass bulb temperature pressure relief device design for hydrogen storage systems

#232
20140216557
2014-08-07

Connecting device with a clamping device for connecting to an arrangement for closing flow paths and monitoring the status of the clamping device and method for same

#233
20140190263
2014-07-10

Acoustic fluid valve calibration

#234
20140175316
2014-06-26

Manual balancing valve

#235
20140158215
2014-06-12

Valve device, valve assembly and method for calibrating a valve assembly

#236
20140069508
2014-03-13

Virtual limit switch

#237
20140041738
2014-02-13

Apparatus for fluid control device leak detection

#238
20140013820
2014-01-16

Ported Bushing for a Pressure Switch Housing

#239
20130341542
2013-12-26

Valve actuator

#240
20130294935
2013-11-07

System and method for a compressor

#241
20130294934
2013-11-07

System and method for a compressor

#242
20130263931
2013-10-10

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

#243
20130245840
2013-09-19

Modulated Reset Relief Valve

#244
20130167935
2013-07-04

Systems and methods for monitoring fluid separation and/or monitoring the health of a valve

#245
20130154841
2013-06-20

Gas valve with valve leakage test

#246
20130153798
2013-06-20

Gas valve with communication link

#247
20130146147
2013-06-13

Glass bulb thermally-activated pressure relief device, safety inspection method, and equipment

#248
20130119285
2013-05-16

Shut-off valve testing system

#249
20130118246
2013-05-16

SHUT-OFF VALVE TESTING SYSTEM

#250
20130110418
2013-05-02

Control valve diagnostics

#251
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