|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

|  | F01 - F04 |
Subsection index
MACHINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F04C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F04B
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
ENGINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F03C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F03C
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
PUMPS |
positive displacement |
rotary or oscillating piston | F04C
reciprocating piston or other | F04B
non-positive displacement | F04D

ENGINEERING IN GENERAL

|  | 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 |
3. Note(s) Attention is drawn to the Notes following the titles of class Fulltext... Hierarchy... Expanded...B81 and subclass Fulltext... Hierarchy... Expanded...B81B relating to "micro-structural devices" and "micro-structural systems". [7] Attention is drawn to Note (2) following the title of subclass Fulltext... Hierarchy... Expanded...G05D and also the subdivisions of that subclass, according to which pressure regulators and flow regulators, e.g. flow regulating valves with pressure compensator, even with the whole regulating system contained in a valve, operating with or without auxiliary power, are covered by groups Fulltext... Hierarchy... Expanded...G05D 16/00 or Fulltext... Hierarchy... Expanded...G05D 7/00, respectively. However, details of the valve parts, per se, are classified in the appropriate groups of this subclass. [2] Attention is drawn to the following places:
   Fulltext... Hierarchy... Expanded...A47J 27/09 | Safety devices for pressure cookers |
   Fulltext... Hierarchy... Expanded...A47J 31/46 | Dispensing spouts, drain valves or like beverage-making apparatus |
   Fulltext... Hierarchy... Expanded...A61B 5/0235 | Valves specially adapted for measuring pressure in heart or blood vessels |
   Fulltext... Hierarchy... Expanded...A61F 2/24 | Heart valves |
   Fulltext... Hierarchy... Expanded...A61M 16/20 | Valves specially adapted for medical respiratory devices |
   Fulltext... Hierarchy... Expanded...A61M 39/00 | Tube connectors, tube couplings, valves or branch units specially adapted for medical use in general |
   Fulltext... Hierarchy... Expanded...A62B 9/02 | Valves for respiratory apparatus |
   Fulltext... Hierarchy... Expanded...A62B 18/10 | Valves for breathing masks or helmets |
   Fulltext... Hierarchy... Expanded...A62C | Fire extinguishers |
   Fulltext... Hierarchy... Expanded...B05B | Nozzles, spray heads or other discharge apparatus for spraying or atomising |
   Fulltext... Hierarchy... Expanded...B60C 29/00 | Arrangements of tyre-inflating valves relative to tyres or wheel rims; Connection of valves to wheel rims, tyres or other inflatable elastic bodies |
   Fulltext... Hierarchy... Expanded...B60G 17/048 | Valves specially adapted for adjusting vehicle fluid-spring characteristics |
   Fulltext... Hierarchy... Expanded...B60T | Valves specially adapted for vehicle brake control systems |
   Fulltext... Hierarchy... Expanded...B62D 5/08 | Vehicle power-assisted steering characterised by the type of valve used |
   Fulltext... Hierarchy... Expanded...B63B 7/00, Fulltext... Hierarchy... Expanded...B63C 9/00 | Arrangement of inflating valves for floatable live-saving equipment |
   Fulltext... Hierarchy... Expanded...B65D 47/04 | Container closures with discharging valves |
   Fulltext... Hierarchy... Expanded...B65D 83/28, Fulltext... Hierarchy... Expanded...B65D 83/44 | Nozzles or valves specially adapted for aerosol containers |
   Fulltext... Hierarchy... Expanded...B65D 90/32 | Safety valves for large containers |
   Fulltext... Hierarchy... Expanded...B65D 90/54 | Gates or closures on large containers |
   Fulltext... Hierarchy... Expanded...B67C 3/28 | Flow control devices for bottling liquids |
   Fulltext... Hierarchy... Expanded...B67D | Dispensing, delivering or transferring liquids |
   Fulltext... Hierarchy... Expanded...E02B 8/00 | Details, e.g. valves, of barrages or weirs |
   Fulltext... Hierarchy... Expanded...E02B 13/02 | Closures for irrigation conduits |
   Fulltext... Hierarchy... Expanded...E03B 9/02 | Arrangement of valves in hydrants [8] |
   Fulltext... Hierarchy... Expanded...E03D | Flushing valves for water-closets or urinals |
   Fulltext... Hierarchy... Expanded...E05F 3/12 | Valve arrangement in door closers |
   Fulltext... Hierarchy... Expanded...E21B 21/10 | Valve arrangements in drilling-fluid circulation systems |
   Fulltext... Hierarchy... Expanded...E21B 34/00 | Valve arrangements for boreholes or wells |
   Fulltext... Hierarchy... Expanded...F01B 25/10 | Working-fluid valves for controlling machines or engines in general or of positive-displacement type |
   Fulltext... Hierarchy... Expanded...F01D 17/10 | Final actuators for controlling non-positive displacement machines or engines |
   Fulltext... Hierarchy... Expanded...F01L | Cyclically operated valves for machines or engines |
   Fulltext... Hierarchy... Expanded...F02D 9/08 | Throttle valves for controlling combustion engines |
   Fulltext... Hierarchy... Expanded...F02K 9/58 | Propellant feed valves for rocket-engines |
   Fulltext... Hierarchy... Expanded...F02M | Carburettors, fuel injection |
   Fulltext... Hierarchy... Expanded...F02M 59/46 | Valves for fuel injection pumps |
   Fulltext... Hierarchy... Expanded...F04 | Pumps |
   Fulltext... Hierarchy... Expanded...F16F 9/34 | Valves for shock absorbers |
   Fulltext... Hierarchy... Expanded...F16L 29/00, Fulltext... Hierarchy... Expanded...F16L 37/28 | Pipe joints or quick-acting couplings with fluid cut-off means |
   Fulltext... Hierarchy... Expanded...F16L 55/00 | Arrangement of valves in pipes |
   Fulltext... Hierarchy... Expanded...F16L 55/055 | Valves specially adapted to prevent or minimise the effect of water hammer |
   Fulltext... Hierarchy... Expanded...F16L 55/46 | Launching devices for pigs or moles |
   Fulltext... Hierarchy... Expanded...F16N 23/00 | Check valves for lubrication systems |
   Fulltext... Hierarchy... Expanded...F17C 13/04 | Arrangement of valves in pressure vessels |
   Fulltext... Hierarchy... Expanded...F22B 37/44 | Arrangement of safety valves on steam boilers |
   Fulltext... Hierarchy... Expanded...F22D 5/34 | Application of valves to automatic water-feed in boiler |
   Fulltext... Hierarchy... Expanded...F23L 13/00 | Valves for air supply control to burners |
   Fulltext... Hierarchy... Expanded...F23Q 2/173 | Valves for lighters with gaseous fuel and adjustable flame |
   Fulltext... Hierarchy... Expanded...F24C 3/12, Fulltext... Hierarchy... Expanded...F24C 5/16 | Arrangement of valves on stoves or ranges |
   Fulltext... Hierarchy... Expanded...F24F | Air conditioning; Ventilation |
   Fulltext... Hierarchy... Expanded...F25B 41/04 | Disposition of fluid circulation valves in refrigeration machines |
   Fulltext... Hierarchy... Expanded...G05D | Controlling non-electric variables |
   Fulltext... Hierarchy... Expanded...G10B 3/06 | Valves for organs |
   Fulltext... Hierarchy... Expanded...G10D 9/04 | Valves for other wind-actuated musical instruments. [5] |

|  | F16K |
Subclass index
CONSTRUCTIONAL TYPES |
Lift-valves, gate valves or sliding valves, taps, diaphragm cut-off apparatus | 1/00 - 7/00
Multiple-way valves | 11/00
Other constructional types of cut-off apparatus, arrangements for cutting off | 13/00
FUNCTIONAL TYPES |
Check valves; safety or equalising valves; arrangements for mixing fluids | 15/00; 17/00; 11/00
Fluid-delivery valves; valves for preventing drip from nozzles | 21/00; 23/00
For venting or aerating enclosures | 24/00
DETAILS OR GENERAL MEANS |
Handling or control | 29/00, 31/00, 39/00, 43/00
Auxiliary means | 47/00, 49/00
Safety | 35/00, 37/00
Details: contact between valve members and seats, housings, floats, sealings | 25/00, 27/00, 33/00, 41/00
Other details | 51/00
SUBJECT MATTER NOT PROVIDED FOR IN OTHER GROUPS OF THIS SUBCLASS | 99/00

|  | F16K 1/00 - F16K 13/00 |
Constructional types (check valves Fulltext... Hierarchy... Expanded...F16K 15/00)

|  | F16K 1/00 - F16K 13/00 |
Note(s) In groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16K 1/00-F16K 13/00, an initial seal breaking or final sealing movement which is different from the opening or closing movement of the valve is not considered in determining the movement to be classified. [2]

P:90 |  | F16K 1/00 |
Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces (diaphragm valves Fulltext... Hierarchy... Expanded...F16K 7/00)

|  | F16K 1/02 |
· | with screw-spindle (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16K 1/12-F16K 1/28 take precedence; actuating mechanisms with screw-spindles Fulltext... Hierarchy... Expanded...F16K 31/50)

|  | F16K 1/04 |
· · | with a cut-off member rigid with the spindle, e.g. main valves

|  | F16K 1/06 |
· · | Special arrangements for improving the flow, e.g. special shape of passages or casings

|  | F16K 1/08 |
· · · | in which the spindle is perpendicular to the general direction of flow

|  | F16K 1/10 |
· · · | in which the spindle is inclined to the general direction of flow

|  | F16K 1/12 |
· | with streamlined valve member around which the fluid flows when the valve is opened

|  | F16K 1/14 |
· | with ball-shaped valve members (check valves Fulltext... Hierarchy... Expanded...F16K 15/04)

|  | F16K 1/16 |
· | with pivoted closure members

|  | F16K 1/18 |
· · | with pivoted discs or flaps

|  | F16K 1/20 |
· · · | with axis of rotation arranged externally of valve member

|  | F16K 1/22 |
· · · | with axis of rotation crossing the valve member, e.g. butterfly valves

|  | F16K 1/226 |
· · · · | Shape or arrangement of the sealing

|  | F16K 1/228 |
· · · · · | Movable sealing bodies

|  | F16K 1/24 |
· | with valve members that, on opening of the valve, are initially lifted from the seat and next are turned around an axis parallel to the seat

|  | F16K 1/26 |
· · | Shape or arrangement of the sealing

|  | F16K 1/28 |
· · · | Movable sealing bodies

|  | F16K 1/30 |
· | specially adapted for pressure containers

|  | F16K 1/32 |
· | Details (details of more general applicability Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16K 25/00-F16K 51/00)

|  | F16K 1/34 |
· · | Cutting-off parts (Fulltext... Hierarchy... Expanded...F16K 1/06, Fulltext... Hierarchy... Expanded...F16K 1/12, Fulltext... Hierarchy... Expanded...F16K 1/14, Fulltext... Hierarchy... Expanded...F16K 1/26 take precedence)

|  | F16K 1/36 |
· · · | Valve members (for double-seat valves Fulltext... Hierarchy... Expanded...F16K 1/44)

|  | F16K 1/38 |
· · · · | of conical shape

|  | F16K 1/40 |
· · · · | of helical shape

|  | F16K 1/42 |
· · · | Valve seats (for double-seat valves Fulltext... Hierarchy... Expanded...F16K 1/44)

|  | F16K 1/44 |
· · · | Details of seats or valve members of double-seat valves

|  | F16K 1/46 |
· · · | Attachment of sealing rings

|  | F16K 1/48 |
· · | Attaching valve members to valve-spindles [4]

|  | F16K 1/50 |
· · | Preventing rotation of valve members

|  | F16K 1/52 |
· · | Means for additional adjustment of the rate of flow

|  | F16K 1/54 |
· · | Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve

P:80 |  | F16K 3/00 |
Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing (Fulltext... Hierarchy... Expanded...F16K 5/00 takes precedence; in barrages or weirs Fulltext... Hierarchy... Expanded...E02B 8/04)

|  | F16K 3/02 |
· | with flat sealing faces; Packings therefor

|  | F16K 3/03 |
· · | with a closure member in the form of an iris-diaphragm

|  | F16K 3/04 |
· · | with pivoted closure members

|  | F16K 3/06 |
· · · | in the form of closure plates arranged between supply and discharge passages (Fulltext... Hierarchy... Expanded...F16K 3/10 takes precedence)

|  | F16K 3/08 |
· · · · | with circular closure plates rotatable around their centres

|  | F16K 3/10 |
· · · | with special arrangements for separating the sealing faces or for pressing them together

|  | F16K 3/12 |
· · | with wedge-shaped arrangements of sealing faces

|  | F16K 3/14 |
· · · | with special arrangements for separating the sealing faces or for pressing them together

|  | F16K 3/16 |
· · | with special arrangements for separating the sealing faces or for pressing them together (Fulltext... Hierarchy... Expanded...F16K 3/10, Fulltext... Hierarchy... Expanded...F16K 3/14 take precedence)

|  | F16K 3/18 |
· · · | by movement of the closure members

|  | F16K 3/20 |
· · · | by movement of the seats

|  | F16K 3/22 |
· | with sealing faces shaped as surfaces of solids of revolution (Fulltext... Hierarchy... Expanded...F16K 13/02 takes precedence; with resilient valve members Fulltext... Hierarchy... Expanded...F16K 3/28)

|  | F16K 3/24 |
· · | with cylindrical valve members

|  | F16K 3/26 |
· · · | with fluid passages in the valve member

|  | F16K 3/28 |
· | with resilient valve members

|  | F16K 3/30 |
· | Details

|  | F16K 3/312 |
· · | Line blinds

|  | F16K 3/314 |
· · | Forms or constructions of slides; Attachment of the slide to the spindle

|  | F16K 3/316 |
· · | Guiding of the slide

|  | F16K 3/32 |
· · | Means for additional adjustment of the rate of flow

|  | F16K 3/34 |
· · | Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve

|  | F16K 3/36 |
· · | Features relating to lubrication

P:70 |  | F16K 5/00 |
Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary (taps of the lift-valve type Fulltext... Hierarchy... Expanded...F16K 1/00)

|  | F16K 5/02 |
· | with plugs having conical surfaces; Packings therefor

|  | F16K 5/04 |
· | with plugs having cylindrical surfaces; Packings therefor

|  | F16K 5/06 |
· | with plugs having spherical surfaces; Packings therefor

|  | F16K 5/08 |
· | Details

|  | F16K 5/10 |
· · | Means for additional adjustment of the rate of flow

|  | F16K 5/12 |
· · | Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve

|  | F16K 5/14 |
· · | Special arrangements for separating the sealing faces or for pressing them together

|  | F16K 5/16 |
· · · | for plugs with conical surfaces

|  | F16K 5/18 |
· · · | for plugs with cylindrical surfaces

|  | F16K 5/20 |
· · · | for plugs with spherical surfaces

|  | F16K 5/22 |
· · | Features relating to lubrication

P:60 |  | F16K 7/00 |
Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage (container gates or closures operating by deformation of flexible walls Fulltext... Hierarchy... Expanded...B65D 90/56; means for plugging pipes or hoses Fulltext... Hierarchy... Expanded...F16L 55/10)

|  | F16K 7/02 |
· | with tubular diaphragm

|  | F16K 7/04 |
· · | constrictable by external radial force

|  | F16K 7/06 |
· · · | by means of a screw-spindle, cam, or other mechanical means

|  | F16K 7/07 |
· · · | by means of fluid pressure

|  | F16K 7/08 |
· · | constrictable by twisting

|  | F16K 7/10 |
· | with inflatable member

|  | F16K 7/12 |
· | with flat, dished, or bowl-shaped diaphragm

|  | F16K 7/14 |
· · | arranged to be deformed against a flat seat

|  | F16K 7/16 |
· · · | the diaphragm being mechanically actuated, e.g. by screw-spindle or cam

|  | F16K 7/17 |
· · · | the diaphragm being actuated by fluid pressure

|  | F16K 7/18 |
· | with diaphragm secured at one side only, e.g. to be laid on the seat by rolling action

|  | F16K 7/20 |
· | with a compressible solid closure member

P:40 |  | F16K 11/00 |
Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves; Arrangement of valves and flow lines specially adapted for mixing fluid [4]

|  | F16K 11/02 |
· | with all movable sealing faces moving as one unit

|  | F16K 11/04 |
· · | comprising only lift valves

|  | F16K 11/044 |
· · · | with movable valve members positioned between valve seats [4]

|  | F16K 11/048 |
· · · | with valve seats positioned between movable valve members [4]

|  | F16K 11/052 |
· · · | with pivoted closure members, e.g. butterfly valves [4]

|  | F16K 11/056 |
· · · | with ball-shaped valve members [4]

|  | F16K 11/06 |
· · | comprising only sliding valves

|  | F16K 11/065 |
· · · | with linearly sliding closure members [4]

|  | F16K 11/07 |
· · · · | with cylindrical slides [4]

|  | F16K 11/072 |
· · · | with pivoted closure members [4]

|  | F16K 11/074 |
· · · · | with flat sealing faces [4]

|  | F16K 11/076 |
· · · · | with sealing faces shaped as surfaces of solids of revolution [4]

|  | F16K 11/078 |
· · · | with pivoted and linearly movable closure members [4]

|  | F16K 11/08 |
· · | comprising only taps or cocks

|  | F16K 11/083 |
· · · | with tapered plug [2]

|  | F16K 11/085 |
· · · | with cylindrical plug [2]

|  | F16K 11/087 |
· · · | with spherical plug [2]

|  | F16K 11/10 |
· | with two or more closure members not moving as a unit

|  | F16K 11/12 |
· · | with one plug turning in another

|  | F16K 11/14 |
· · | operated by one actuating member, e.g. a handle (with one plug turning in another Fulltext... Hierarchy... Expanded...F16K 11/12)

|  | F16K 11/16 |
· · · | which only slides, or only turns, or only swings in one plane

|  | F16K 11/18 |
· · · | with separate operating movements for separate closure members

|  | F16K 11/20 |
· · | operated by separate actuating members (with one plug turning in another Fulltext... Hierarchy... Expanded...F16K 11/12)

|  | F16K 11/22 |
· · · | with an actuating member for each valve, e.g. interconnected to form multiple-way valves

|  | F16K 11/24 |
· · · | with an electromagnetically-operated valve, e.g. for washing machines

P:100 |  | F16K 13/00 |
Other constructional types of cut-off apparatus (means for plugging pipes or hoses Fulltext... Hierarchy... Expanded...F16L 55/10); Arrangements for cutting-off [4]

|  | F16K 13/02 |
· | with both sealing faces shaped as small segments of a cylinder and the moving member pivotally mounted

|  | F16K 13/08 |
· | Arrangements for cutting-off [4]

|  | F16K 13/10 |
· · | by means of liquid or granular medium [4]

|  | F16K 15/00 - F16K 24/00 |
Functional types

P:30 |  | F16K 15/00 |
Check valves (valves specially adapted for inflatable balls Fulltext... Hierarchy... Expanded...A63B 41/00)

|  | F16K 15/02 |
· | with guided rigid valve members

|  | F16K 15/03 |
· · | with a hinged closure member

|  | F16K 15/04 |
· · | shaped as balls

|  | F16K 15/06 |
· · | with guided stems

|  | F16K 15/08 |
· · | shaped as rings

|  | F16K 15/10 |
· · · | integral with, or rigidly fixed to, a common valve plate

|  | F16K 15/12 |
· · · | Springs for ring valves [3]

|  | F16K 15/14 |
· | with flexible valve members

|  | F16K 15/16 |
· · | with tongue-shaped laminae

|  | F16K 15/18 |
· | with actuating mechanism; Combined check valves and actuated valves

|  | F16K 15/20 |
· | specially designed for inflatable bodies, e.g. tyres (connecting valves to inflatable elastic bodies Fulltext... Hierarchy... Expanded...B60C 29/00)

P:0 |  | F16K 17/00 |
Safety valves; Equalising valves (pressure relief devices for aerosol containers Fulltext... Hierarchy... Expanded...B65D 83/70)

|  | F16K 17/02 |
· | opening on surplus pressure on one side; closing on insufficient pressure on one side (check valves Fulltext... Hierarchy... Expanded...F16K 15/00)

|  | F16K 17/04 |
· · | spring-loaded

|  | F16K 17/06 |
· · · | with special arrangements for adjusting the opening pressure

|  | F16K 17/08 |
· · · | with special arrangements for providing a large discharge passage

|  | F16K 17/10 |
· · · | with auxiliary valve for fluid operation of the main valve

|  | F16K 17/12 |
· · | weight-loaded

|  | F16K 17/14 |
· · | with fracturing member

|  | F16K 17/16 |
· · · | with fracturing diaphragm

|  | F16K 17/164 |
· · | and remaining closed after return of the normal pressure

|  | F16K 17/168 |
· · | combined with manually-controlled valves, e.g. a valve combined with a safety valve

|  | F16K 17/18 |
· | opening on surplus pressure on either side

|  | F16K 17/19 |
· · | Equalising valves predominantly for tanks

|  | F16K 17/192 |
· · · | with closure member in the form of a movable liquid column

|  | F16K 17/194 |
· · · | weight-loaded

|  | F16K 17/196 |
· · · | spring-loaded

|  | F16K 17/20 |
· | Excess-flow valves (actuated in consequence of shock or similar extraneous influence Fulltext... Hierarchy... Expanded...F16K 17/36)

|  | F16K 17/22 |
· · | actuated by the difference of pressure between two places in the flow line

|  | F16K 17/24 |
· · · | acting directly on the cutting-off member

|  | F16K 17/26 |
· · · · | operating in either direction

|  | F16K 17/28 |
· · · · | operating in one direction only

|  | F16K 17/30 |
· · · · · | spring-loaded

|  | F16K 17/32 |
· · · | acting on a servo-mechanism or on a catch-releasing mechanism

|  | F16K 17/34 |
· · | in which the flow-energy of the flowing medium actuates the closing mechanism

|  | F16K 17/36 |
· | actuated in consequence of extraneous circumstances, e.g. shock, change of position

|  | F16K 17/38 |
· · | of excessive temperature

|  | F16K 17/40 |
· | with fracturing member, e.g. fracturing diaphragm, fusible joint (valves with fracturing member opening on surplus pressure on one side Fulltext... Hierarchy... Expanded...F16K 17/14)

|  | F16K 17/42 |
· | Valves preventing penetration of air in the outlet of containers for liquids

P:50 |  | F16K 21/00 |
Fluid-delivery valves (specially adapted for aerosol containers Fulltext... Hierarchy... Expanded...B65D 83/44; for liquid handling Fulltext... Hierarchy... Expanded...B67D; for flushing devices for water-closets or the like Fulltext... Hierarchy... Expanded...E03D)

|  | F16K 21/02 |
· | providing a continuous small flow

|  | F16K 21/04 |
· | Self-closing valves, i.e. closing automatically after operation

|  | F16K 21/06 |
· · | in which the closing movement, either retarded or not, starts immediately after opening

|  | F16K 21/08 |
· · · | with ball-shaped closing members

|  | F16K 21/10 |
· · · | with hydraulic brake cylinder acting on the closure member

|  | F16K 21/12 |
· · · | with hydraulically-operated opening means; with arrangements for pressure relief before opening

|  | F16K 21/14 |
· · | with special means for preventing the self-closing

|  | F16K 21/16 |
· · | closing after a predetermined quantity of fluid has been delivered (Fulltext... Hierarchy... Expanded...F16K 21/10 takes precedence)

|  | F16K 21/18 |
· · | closed when a rising liquid reaches a predetermined level (float-actuated valves Fulltext... Hierarchy... Expanded...F16K 31/18)

|  | F16K 21/20 |
· · · | by means making use of air-suction through an opening closed by the rising liquid

P:20 |  | F16K 23/00 |
Valves for preventing drip from nozzles

P:10 |  | F16K 24/00 |
Devices, e.g. valves, for venting or aerating enclosures (equalising valves Fulltext... Hierarchy... Expanded...F16K 17/00; arrangement or mounting in pipes or pipe systems Fulltext... Hierarchy... Expanded...F16L 55/07; venting or aerating as an additional function of steam traps or like apparatus Fulltext... Hierarchy... Expanded...F16T; ventilation of rooms, vehicles, see the appropriate subclass, e.g. Fulltext... Hierarchy... Expanded...F24F) [2]

|  | F16K 24/02 |
· | the enclosure being itself a valve, tap, or cock [2]

|  | F16K 24/04 |
· | for venting only (Fulltext... Hierarchy... Expanded...F16K 24/02 takes precedence) [2]

|  | F16K 24/06 |
· | for aerating only (Fulltext... Hierarchy... Expanded...F16K 24/02 takes precedence) [2]

|  | F16K 25/00 - F16K 51/00 |
Details

|  | F16K 25/00 - F16K 51/00 |
Note(s) Details not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16K 25/00-F16K 51/00 are classified in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16K 1/00-F16K 24/00.

P:200 |  | F16K 25/00 |
Details relating to contact between valve members and seats (movement of valve members other than for opening and closing Fulltext... Hierarchy... Expanded...F16K 29/00; sealing constructions, see the appropriate groups according to the type of valve)

|  | F16K 25/02 |
· | Arrangements using fluid issuing from valve members or seats

|  | F16K 25/04 |
· | Arrangements for preventing erosion, not otherwise provided for

P:220 |  | F16K 27/00 |
Construction of housings (methods for welding housings Fulltext... Hierarchy... Expanded...B23K); Use of materials therefor

|  | F16K 27/02 |
· | of lift valves (for reducing the flow resistance of screw-spindle lift-valves Fulltext... Hierarchy... Expanded...F16K 1/06)

|  | F16K 27/04 |
· | of sliding valves

|  | F16K 27/06 |
· | of taps or cocks

|  | F16K 27/07 |
· | of cutting-off parts of tanks, e.g. tank-cars [4]

|  | F16K 27/08 |
· | Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves

|  | F16K 27/10 |
· | Welded housings

|  | F16K 27/12 |
· | Covers for housings

P:150 |  | F16K 29/00 |
Arrangements for movement of valve members other than for opening or closing the valve, e.g. for grinding-in, for preventing sticking

|  | F16K 29/02 |
· | providing for continuous motion

P:180 |  | F16K 31/00 |
Operating means; Releasing devices

|  | F16K 31/02 |
· | electric; magnetic

|  | F16K 31/04 |
· · | using a motor

|  | F16K 31/05 |
· · · | specially adapted for operating hand-operated valves or for combined motor and hand operation

|  | F16K 31/06 |
· · | using a magnet

|  | F16K 31/08 |
· · · | using a permanent magnet

|  | F16K 31/10 |
· · · | with additional mechanism between armature and closure member

|  | F16K 31/11 |
· · · · | with additional hand operating means [2]

|  | F16K 31/12 |
· | actuated by fluid (fluid-actuated check valves Fulltext... Hierarchy... Expanded...F16K 15/00; fluid-actuated safety valves Fulltext... Hierarchy... Expanded...F16K 17/00)

|  | F16K 31/122 |
· · | the fluid acting on a piston (Fulltext... Hierarchy... Expanded...F16K 31/143, Fulltext... Hierarchy... Expanded...F16K 31/163, Fulltext... Hierarchy... Expanded...F16K 31/363, Fulltext... Hierarchy... Expanded...F16K 31/383 take precedence) [2]

|  | F16K 31/124 |
· · · | servo actuated [2]

|  | F16K 31/126 |
· · | the fluid acting on a diaphragm, bellows, or the like (Fulltext... Hierarchy... Expanded...F16K 31/145, Fulltext... Hierarchy... Expanded...F16K 31/165, Fulltext... Hierarchy... Expanded...F16K 31/365, Fulltext... Hierarchy... Expanded...F16K 31/385 take precedence) [2]

|  | F16K 31/128 |
· · · | servo actuated [2]

|  | F16K 31/14 |
· · | for mounting on, or in combination with, hand-actuated valves

|  | F16K 31/143 |
· · · | the fluid acting on a piston

|  | F16K 31/145 |
· · · | the fluid acting on a diaphragm

|  | F16K 31/16 |
· · | with a mechanism, other than pulling- or pushing-rod, between fluid motor and closure member (with float Fulltext... Hierarchy... Expanded...F16K 31/18)

|  | F16K 31/163 |
· · · | the fluid acting on a piston

|  | F16K 31/165 |
· · · | the fluid acting on a diaphragm

|  | F16K 31/18 |
· · | actuated by a float (floats Fulltext... Hierarchy... Expanded...F16K 33/00; float-actuated valves in steam-traps Fulltext... Hierarchy... Expanded...F16T 1/20, in boilers Fulltext... Hierarchy... Expanded...F22D 5/08)

|  | F16K 31/20 |
· · · | actuating a lift valve

|  | F16K 31/22 |
· · · · | with the float rigidly connected to the valve

|  | F16K 31/24 |
· · · · | with a transmission with parts linked together from a single float to a single valve

|  | F16K 31/26 |
· · · · · | with the valve guided for rectilinear movement and the float attached to a pivoted arm

|  | F16K 31/28 |
· · · · | with two or more floats actuating one valve

|  | F16K 31/30 |
· · · | actuating a gate valve or sliding valve

|  | F16K 31/32 |
· · · | actuating a tap or cock

|  | F16K 31/34 |
· · · | acting on pilot valve controlling the cut-off apparatus

|  | F16K 31/36 |
· · | in which fluid from the conduit is constantly supplied to the fluid motor

|  | F16K 31/363 |
· · · | the fluid acting on a piston (Fulltext... Hierarchy... Expanded...F16K 31/38 takes precedence)

|  | F16K 31/365 |
· · · | the fluid acting on a diaphragm

|  | F16K 31/38 |
· · · | in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side (Fulltext... Hierarchy... Expanded...F16K 31/40 takes precedence)

|  | F16K 31/383 |
· · · · | the fluid acting on a piston

|  | F16K 31/385 |
· · · · | the fluid acting on a diaphragm

|  | F16K 31/40 |
· · · | with electrically-actuated member in the discharge of the motor

|  | F16K 31/42 |
· · | by means of electrically-actuated members in the supply or discharge conduits of the fluid motor (Fulltext... Hierarchy... Expanded...F16K 31/40 takes precedence)

|  | F16K 31/44 |
· | Mechanical actuating means

|  | F16K 31/46 |
· · | for remote operation

|  | F16K 31/48 |
· · | actuated by mechanical timing-device, e.g. with dash-pot (self-closing valves Fulltext... Hierarchy... Expanded...F16K 21/16)

|  | F16K 31/50 |
· · | with screw-spindle

|  | F16K 31/52 |
· · | with crank, eccentric, or cam

|  | F16K 31/524 |
· · · | with a cam

|  | F16K 31/528 |
· · · | with pin and slot

|  | F16K 31/53 |
· · | with toothed gearing

|  | F16K 31/54 |
· · · | with pinion and rack

|  | F16K 31/56 |
· · | without stable intermediate position, e.g. with snap action

|  | F16K 31/58 |
· · | comprising a movable discharge-nozzle

|  | F16K 31/60 |
· · | Handles

|  | F16K 31/62 |
· · | Pedals or like operating members, e.g. actuated by knee or hip

|  | F16K 31/64 |
· | responsive to temperature variation (dependant on excessive temperature Fulltext... Hierarchy... Expanded...F16K 17/38; control of fire-fighting equipment Fulltext... Hierarchy... Expanded...A62C 37/00; devices for preventing bursting of water pipes by freezing Fulltext... Hierarchy... Expanded...E03B 7/10) [4]

|  | F16K 31/66 |
· · | electrically or magnetically actuated, e.g. by magnets with variable magnetic characteristics [4]

|  | F16K 31/68 |
· · | actuated by fluid pressure or volumetric variation in a confined chamber [4]

|  | F16K 31/70 |
· · | mechanically actuated, e.g. by a bimetallic strip [4]

|  | F16K 31/72 |
· | Operating means or releasing devices specifically adapted to enhance the speed of valve response [4]

P:170 |  | F16K 33/00 |
Floats for actuation of valves or other apparatus

P:110 |  | F16K 35/00 |
Means to prevent accidental or unauthorised actuation

|  | F16K 35/02 |
· | to be locked or disconnected by means of a push or pull

|  | F16K 35/04 |
· | yieldingly resisting the actuation

|  | F16K 35/06 |
· | using a removable actuating or locking member, e.g. a key (Fulltext... Hierarchy... Expanded...F16K 35/10, Fulltext... Hierarchy... Expanded...F16K 35/12 take precedence)

|  | F16K 35/08 |
· | requiring setting according to a code, e.g. permutation locks

|  | F16K 35/10 |
· | with locking caps or locking bars

|  | F16K 35/12 |
· | with sealing wire

|  | F16K 35/14 |
· | interlocking two or more valves

|  | F16K 35/16 |
· | with locking member actuated by magnet

P:120 |  | F16K 37/00 |
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

P:190 |  | F16K 39/00 |
Devices for relieving the pressure on the sealing faces

|  | F16K 39/02 |
· | for lift valves

|  | F16K 39/04 |
· | for sliding valves

|  | F16K 39/06 |
· | for taps or cocks

P:210 |  | F16K 41/00 |
Spindle sealings

|  | F16K 41/02 |
· | with stuffing-box

|  | F16K 41/04 |
· · | with at least one ring of rubber or like material between spindle and housing

|  | F16K 41/06 |
· · | with at least one ring attached to both spindle and housing

|  | F16K 41/08 |
· · | with at least one ring provided with axially-protruding peripheral closing-lip

|  | F16K 41/10 |
· | with diaphragm, e.g. shaped as bellows or tube

|  | F16K 41/12 |
· · | with approximately flat diaphragm

|  | F16K 41/14 |
· | with conical flange on the spindle which co-operates with a conical surface in the housing

|  | F16K 41/16 |
· | with a flange on the spindle which rests on a sealing ring

|  | F16K 41/18 |
· · | sealing only when the closure member is in the opened position

P:160 |  | F16K 43/00 |
Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose

P:140 |  | F16K 47/00 |
Means in valves for absorbing fluid energy (for pipes Fulltext... Hierarchy... Expanded...F16L 55/00)

|  | F16K 47/02 |
· | for preventing water-hammer or noise

|  | F16K 47/04 |
· | for decreasing pressure, the throttle being incorporated in the closure member

|  | F16K 47/06 |
· · | with a throttle in the form of a helical channel

|  | F16K 47/08 |
· | for decreasing pressure and having a throttling member separate from the closure member

|  | F16K 47/10 |
· · | in which the medium in one direction must flow through the throttling channel, and in the other direction may flow through a much wider channel parallel to the throttling channel

|  | F16K 47/12 |
· · | the throttling channel being of helical form

|  | F16K 47/14 |
· · | the throttling member being a perforated membrane

|  | F16K 47/16 |
· · | the throttling member being a cone

P:130 |  | F16K 49/00 |
Means in or on valves for heating or cooling (for pipes Fulltext... Hierarchy... Expanded...F16L 53/00; thermal insulation in connection with pipes or pipe systems Fulltext... Hierarchy... Expanded...F16L 59/16)

P:230 |  | F16K 51/00 |
Other details not peculiar to particular types of valves or cut-off apparatus

|  | F16K 51/02 |
· | specially adapted for high-vacuum installations [2]

P:240 |  | F16K 99/00 |
Subject matter not provided for in other groups of this subclass [8]