|  | 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 27/08 | Safety devices for pressure cookers |
   Fulltext... Hierarchy... Expanded...A47J 31/44 | Dispensing spouts, drain valves or like beverage-making apparatus |
   Fulltext... Hierarchy... Expanded...A61B 5/022 | 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 9/00 | Valves for respiratory apparatus |
   Fulltext... Hierarchy... Expanded...A62B 18/00 | 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 17/04 | 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 90/22 | Safety valves for large containers |
   Fulltext... Hierarchy... Expanded...B65D 90/00 | Gates or closures on large containers |
   Fulltext... Hierarchy... Expanded...B67C 3/02 | 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 13/00 | Closures for irrigation conduits |
   Fulltext... Hierarchy... Expanded...E03B 9/00 | Arrangement of valves in hydrants [8] |
   Fulltext... Hierarchy... Expanded...E03D | Flushing valves for water-closets or urinals |
   Fulltext... Hierarchy... Expanded...E05F 3/00 | Valve arrangement in door closers |
   Fulltext... Hierarchy... Expanded...E21B 21/00 | Valve arrangements in drilling-fluid circulation systems |
   Fulltext... Hierarchy... Expanded...E21B 34/00 | Valve arrangements for boreholes or wells |
   Fulltext... Hierarchy... Expanded...F01B 25/00 | Working-fluid valves for controlling machines or engines in general or of positive-displacement type |
   Fulltext... Hierarchy... Expanded...F01D 17/00 | 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 9/00 | Propellant feed valves for rocket-engines |
   Fulltext... Hierarchy... Expanded...F02M | Carburettors, fuel injection |
   Fulltext... Hierarchy... Expanded...F02M 59/00 | 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 55/04 | Valves specially adapted to prevent or minimise the effect of water hammer |
   Fulltext... Hierarchy... Expanded...F16L 55/26 | 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 37/00 | Arrangement of safety valves on steam boilers |
   Fulltext... Hierarchy... Expanded...F22D 5/00 | 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 2/00 | Valves for lighters with gaseous fuel and adjustable flame |
   Fulltext... Hierarchy... Expanded...F24C 3/12, Fulltext... Hierarchy... Expanded...F24C 5/00 | 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 3/00 | Valves for organs |
   Fulltext... Hierarchy... Expanded...G10D 9/00 | 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

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

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

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

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 8/00)

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

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

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 90/00; means for plugging pipes or hoses Fulltext... Hierarchy... Expanded...F16L 55/10)

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

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 11/06 |
· · | comprising only sliding valves

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

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

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 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 15/14 |
· | with flexible valve members

P:0 |  | F16K 17/00 |
Safety valves; Equalising valves (pressure relief devices for aerosol containers Fulltext... Hierarchy... Expanded...B65D 83/14)

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

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

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

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)

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 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)

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 1/00)

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

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

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

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 31/12 |
· | 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 31/14, Fulltext... Hierarchy... Expanded...F16K 31/16, Fulltext... Hierarchy... Expanded...F16K 31/36 take precedence) [2]

|  | F16K 31/126 |
· · | the fluid acting on a diaphragm, bellows, or the like (Fulltext... Hierarchy... Expanded...F16K 31/14, Fulltext... Hierarchy... Expanded...F16K 31/16, Fulltext... Hierarchy... Expanded...F16K 31/36 take precedence) [2]

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

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

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

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

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

|  | F16K 31/60 |
· · | Handles

|  | F16K 31/64 |
· | responsive to temperature variation (dependant on excessive temperature Fulltext... Hierarchy... Expanded...F16K 17/36; control of fire-fighting equipment Fulltext... Hierarchy... Expanded...A62C 37/00; devices for preventing bursting of water pipes by freezing Fulltext... Hierarchy... Expanded...E03B 7/00) [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

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

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

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)

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 59/00)

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]