| ReturnTo Theme-Group-Choice | Onelevelup |
| 3H059 | Safety valves (1) (i.e., relief valves) | |
| F16K17/00 -17/168 | ||
| F16K17/00-17/168 | AA | AA00 VALVE TYPES |
AA01 | AA02 | AA03 | AA04 | AA05 | AA06 | AA07 | AA08 | AA09 | AA10 |
| . Main valves | . . Lift valves | . . . Linear lift valves | . . . . Cylindrical lift valves | . . . . . Valve seats and engagement units that have flat surfaces | . . . . . Valve seats and engagement units that have conical surfaces | . . . . . Valve seats and engagement units that have spherical surfaces | . . . . Ball lift valves | . . . . Plate lift valves | . . . Rotary lift valves | |||
| AA11 | AA12 | AA13 | AA14 | AA15 | AA16 | AA17 | AA18 | AA19 | AA20 | |||
| . . . . Flapper, swing, and lead lift valves | . . Sliding valves | . . Valves with fracturing members | . . . Diaphragm valves | . Pilot valves | . . Lift valves | . . . Linear lift valves | . . . Rotary lift valves | . . Sliding valves | . . Pilot valves with fracturing members | |||
| BB | BB00 PURPOSE AND EFFECTS |
BB01 | BB02 | BB03 | BB04 | BB05 | BB06 | BB07 | ||||
| . Improvements relating to valve functions | . . Improvement of responsiveness | . . . Improvement of pressure-override characteristics | . . Improvement of seal qualities during valve closing | . . Adjustment of valve opening pressure | . . Improvement of the stability of valve movement | . . Addition of special functions | ||||||
| BB11 | BB12 | BB13 | BB14 | BB15 | BB16 | |||||||
| . Improvements relating to fluid flow | . . Prevention of fluid pulsation | . . Prevention of cavitation | . . Prevention of water-hammering | . . Peak-pressure reduction and surge-pressure reduction | . . Reduction and rectification of flow resistance | |||||||
| BB21 | BB22 | BB23 | BB24 | BB25 | BB26 | BB27 | BB28 | BB29 | BB30 | |||
| . Improvements relating to valve structure | . . Size reduction, weight reduction, and simplification of structure | . . Improvement of resistance to corrosion | . . Improvement of resistance to wear | . . Improvement of resistance to heat | . . . Improvement of resistance to low temperatures | . . Improvement of resistance to high pressure | . . Improvement of resistance to impacts | . . Prevention of leakage to the valve exterior | . . Simplification of manufacturing and assembly | |||
| BB31 | BB32 | BB33 | BB34 | BB35 | BB36 | BB37 | BB38 | BB39 | BB40 | |||
| . Improvements relating to valve operation | . . Provision of remote control means | . . Prevention of abnormal operation | . Energy conservation | . Safety improvements | . Measures to protect against foreign matter | . Prevention of valve chattering and valve vibration | . Prevention of noise | . Prevention of freezing | . Others | |||
| CA | CA00 VALVE SHAPES AND STRUCTURE |
CA01 | CA02 | CA03 | CA04 | CA05 | ||||||
| . Valve shapes | . . Valves with stepped sections and projections | . . Valves with notches, grooves, and slits | . . Valves with holes and channels | . . Valves with guides attached to the valve body | ||||||||
| CA11 | CA12 | CA13 | CA14 | CA15 | CA16 | CA17 | CA18 | CA19 | CA20 | |||
| . Valve structure | . . Multiple valves | . . Diaphragms | . . Magnetic valves | . . Pilot valves installed inside the main valve | . . Valve materials | . . . Metals | . . . Ceramics | . . . Macromolecular materials and synthetic resins | . . . . Rubber | |||
| CA21 | CA22 | CA23 | CA24 | CA25 | CA26 | CA27 | CA28 | CA29 | ||||
| . . Valves with surface treatments | . . Valves with linings or coatings | . Valves with special sealing members | . . Materials of sealing members | . . . Metals | . . . Ceramics | . . . Macromolecular materials and synthetic resins | . . . . Rubber | . . Double seals | ||||
| CB | CB00 VALVE-SEAT SHAPES AND STRUCTURE |
CB01 | CB02 | CB03 | CB04 | |||||||
| . Valve-seat shapes | . . Valves with stepped sections and projections | . . Valves with notches, grooves, and slits | . . Valves with holes and flow paths | |||||||||
| CB11 | CB12 | CB13 | CB14 | CB15 | CB16 | CB17 | CB18 | CB19 | CB20 | |||
| . Valve-seat structure | . . Multiple valve seats | . . Formation of a sheet surface by the upper and lower valve-seat surfaces | . . Movable valve seats | . . Valve-seat structures integrated with the valve housing | . . Materials of valve seats | . . . Metals | . . . Ceramics | . . . Macromolecular materials and synthetic resins | . . . . Rubber | |||
| CB21 | CB22 | CB23 | CB24 | CB25 | CB26 | CB27 | CB28 | CB29 | ||||
| . . Valve seats with surface treatments | . . Valve seats with linings or coatings | . Valve seats with special sealing members | . . Materials of sealing members | . . . Metals | . . . Ceramics | . . . Macromolecular materials and synthetic resins | . . . . Rubber | . . Double seals | ||||
| CC | CC00 HOUSING SHAPES AND STRUCTURE |
CC01 | CC02 | CC03 | CC04 | CC05 | CC06 | CC07 | CC08 | CC09 | ||
| . Formation of accessory mechanisms on housings | . . Valve-guide units | . . Oil-accumulation units | . . Rectification mechanisms | . . Traps for foreign matter | . Operating members that form the housing itself | . . Container caps | . . Pipes | . . Pipe joints | ||||
| CC11 | CC12 | CC13 | CC14 | CC15 | CC16 | CC17 | CC18 | |||||
| . Cartridge housings | . Housings with surface treatments | . Housings with linings | . Housing materials | . . Metals | . . Ceramics | . . Macromolecular materials and synthetic resins | . . . Rubber | |||||
| CD | CD00 VALVE ACTUATION MEANS |
CD01 | CD02 | CD03 | CD04 | CD05 | CD06 | CD07 | CD08 | |||
| . Valves actuated by the elasticity of the valves | . Mechanical actuation means | . . Springs | . . . Coiled springs | . . . . Cylindrical springs | . . . Dish springs | . . . Plate springs | . . Weights | |||||
| CD11 | CD12 | CD13 | CD14 | |||||||||
| . Electrical actuation means and magnetic actuation means | . Fluid-pressure actuation means | . . External fluid pressure | . Valve actuation by interposition of levers and links | |||||||||
| CE | CE00 MEANS FOR SETTING THE PRESSURE FOR VALVE OPENING |
CE01 | CE02 | CE03 | CE04 | CE05 | CE06 | CE07 | CE08 | CE09 | CE10 | |
| . Mechanical pressure-setting means | . . Levers | . . Cams and links | . Electrical and magnetic pressure-setting means | . Fluid pressure | . . External fluid pressure | . Pressure setting using temperature changes | . . Shape-memory alloys | . . Thermowax | . . Bimetals | |||
| CF | CF00 VALVE DETAILS OTHER THAN THOSE PREVIOUSLY MENTIONED |
CF01 | CF02 | CF03 | CF04 | CF05 | CF06 | CF07 | CF08 | CF09 | ||
| . Throttle means | . . Adjustable degree of throttle opening | . Alarm devices | . Filters | . Breaking means | . Shock-absorbing means | . . Dashpots | . . Pistons | . . Springs | ||||
| CF11 | CF12 | CF13 | CF14 | |||||||||
| . Sensors | . . Sensors for detecting valve actuation | . . Sensors for detecting fluid-flow status and rate | . Others | |||||||||
| DD | DD00 ADDITION OF SPECIAL FUNCTIONS |
DD01 | DD02 | DD03 | DD04 | DD05 | DD06 | DD07 | DD08 | DD09 | ||
| . Adjustment of flow rate | . . Smooth adjustment of the flow rate | . . Adjustment of the flow rate in stages | . . Slight adjustment of the flow rate | . Checking | . Forced valve opening or closing | . . Forced valve opening | . . . Forced valve fracture | . . Forced valve closing | ||||
| DD11 | DD12 | DD13 | DD14 | DD15 | DD16 | DD17 | ||||||
| . Means for forced valve opening or closing | . . Mechanical opening or closing means (i.e., including manual means) | . . Electrical and magnetic opening or closing means | . . Fluid-pressure opening or closing means | . Elimination of vacuums | . Extraction of water | . Others | ||||||
| EE | EE00 FUNCTIONAL NAMES FOR VALVES |
EE01 | EE02 | EE03 | EE04 | EE05 | EE06 | EE07 | EE08 | EE09 | EE10 | |
| . Pressure-relief valves and relief valves | . . Fracturing pressure-relief and relief valves | . Counterbalance valves | . . Hydro-cushion counterbalance valves | . . Balance-piston counterbalance valves | . . Negatively loaded spring counterbalance valves | . Non-load valves | . . Hydro-cushion non-load valves | . . Balance-piston non-load valves | . . Unloading relief valves | |||
| EE11 | EE12 | EE13 | ||||||||||
| . Sequence valves | . Pressure-maintenance valves | . Others | ||||||||||
| FF | FF00 USES |
FF01 | FF02 | FF03 | FF04 | FF05 | FF06 | FF07 | FF08 | FF09 | FF10 | |
| . Control fluids | . . Water (i.e., including warm water) | . . Oil | . . Air | . . Gases | . . Steam | . . High-temperature fluids | . . Low-temperature fluids | . . High-pressure fluids | . . Corrosive fluids | |||
| FF11 | FF12 | FF13 | FF14 | FF15 | FF16 | FF17 | FF18 | FF19 | FF20 | |||
| . Devices | . . Compressors and pumps | . . Internal-combustion engines | . . Civil-engineering and construction machines | . . Air conditioners | . . Vehicles | . . Containers | . . Uses in the food industry | . . Medical instruments | . . Nuclear-energy devices |