F-Term-List

F16K39/00-51/02

AA00
TYPES OF VALVES

AA01

AA02

AA03

AA04

AA05

AA06

AA07

. Lift valves

. . Butterfly valves

. Sliding valves

. . Cylindrical sliding valves

. Taps or cocks

. . Spherical plug valves

. Others

BA00
PURPOSE AND EFFECTS OF IMPROVEMENTS

BA01

BA02

BA03

BA04

BA05

BA06

BA07

. Improvements relating to flow

. . Prevention of fluid pulsation

. . Prevention of cavitation

. . Rectification or guidance

. . Prevention of water-hammering

. . Prevention of generation of eddies or whirlpools

. . Prevention of generation of negative pressure

BA11

BA12

BA13

BA14

BA15

BA16

BA17

BA18

BA19

. Improvements relating to the valve structure

. . Improvement of friction-resistance characteristics

. . Improved resistance to corrosion

. . Improved resistance to heat

. . Improved resistance to high pressure

. . Improved resistance to shock

. . Size and weight reduction, and simplification of the valve structure

. . Simplification of valve manufacturing and assembly

. . Prevention of leakage to the valve exterior

BA21

BA22

BA23

. Improvements relating to valve operation

. . Valves that can be controlled remotely

. . Reduction of the force required for operation

BA31

BA32

BA33

BA34

BA35

BA36

BA37

BA38

. Safety improvements

. Prevention of noise

. Prevention of vibration

. Prevention of clattering of the valve

. Prevention of freezing

. Heating of the valve

. Cooling of the valve

. Others

F16K39/00-39/06

CA00
DEVICES FOR REDUCING THE PRESSURE ON THE SEALING SURFACE

CA01

CA02

CA03

CA04

CA05

CA06

CA08

. Pressure balance

. . Forming of flow channels on the valve

. . . Attachment of auxiliary valves

. . Forming of flow channels on the housing

. . Forming of flow channels at the valve axis

. . Valve elements with a balanced shape

. Others

F16K41/00-41/18

DA00
FORMS AND STRUCTURES OF SPINDLE-SEALING

DA01

DA02

DA03

DA04

DA06

DA07

DA09

. Sealing

. . O-rings

. . Lip sealing

. . . V-rings or U-rings

. Ground packing

. . Ground packing with lantern rings

. Diaphragms

DA11

DA12

DA14

DA15

DA16

DA17

. Bellows

. . Balancing of the internal and external pressure of the bellows

. Sealing materials*

. . Macromolecular materials or synthetic resins*

. . . Rubber*

. . Metals

F16K47/00-47/16

EA00
MEANS FOR ABSORBING FLUID ENERGY IN VALVES

EA01

EA02

EA03

EA05

EA06

EA08

EA09

. Slow closing of the valve

. . Dash pots

. . Detection of pressure followed by control of the valve closing speed

. Absorption of pressure

. . Accumulators

. Safety valves

. . Safety valves mounted in bypass routes

EA11

EA12

EA13

EA14

EA15

EA16

EA17

EA18

. Means for impeding the flow

. . Throttles

. . . Small openings

. . . . Multiple small openings

. . . Zigzag routes

. . . Granular materials

. . . Steel

. . . Porous sintered metal

EA21

EA22

EA23

EA24

EA25

EA27

. . . One-directional throttle valves consisting of a combination of throttle and check valves

. . . . Lift-type throttles

. . . . . Ball throttles

. . . . . Swing throttles

. . . . Flexible throttles

. . Flow-impedance structures that are rough or have many projections

EA31

EA32

EA33

EA34

EA35

EA36

. Diffusers

. Fluids that are conducted to negative pressure areas

. Rectification

. Mufflers

. Soundproofing devices

. Others

3H066	DETAILS OF VALVES (II)
	F16K39/00 -51/02@Z