F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINEERING IN GENERAL
 F17
STORING OR DISTRIBUTING GASES OR LIQUIDS (water supply E03B)
 F17D
PIPE SYSTEMS; PIPE-LINES (pumps or compressors F04; fluid dynamics F15D; valves or the like F16K; pipes, joints, or associated devices F16L; steam traps or the like F16T; fluid-pressure electric cables H01B 9/06)
 F17D

Note(s)

In this sub-class, pipe-line systems are interpreted as systems described in flow sheets as well as arrangements of co-operating elements, the elements per se being covered in the relevant sub-classes.

 F17D 1/00
Pipe-line systems (for central heating F24D; conveying solids or mixtures of fluids and solids, through conduits B65G 51/00, B65G 53/00; apparatus for dispensing or delivering liquids B67D)
 F17D 1/02
·  for gases or vapours
 F17D 1/04
·  ·  for distribution of gas
 F17D 1/05
·  ·  ·  Preventing freezing (by heating F16L 53/00)
 F17D 1/06
·  ·  for steam
 F17D 1/08
·  for liquids (water-main or service pipe systems E03B 7/04; domestic hot-water supply systems F24D 17/00)
 F17D 1/10
·  ·  Arrangements or systems of devices for influencing or alternating dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves (fluid dynamics F15D; damping pulsations in fluids in pipes in general F16L 55/04)
 F17D 1/12
·  ·  Conveying liquids by pressure of another fluid
 F17D 1/14
·  ·  Conveying liquids by pumping
 F17D 1/16
·  ·  Facilitating the conveyance of liquids by altering their viscosity, e.g. by mixing with another liquid
 F17D 1/18
·  ·  ·  by heating (means therefor F16L 53/00)
 F17D 3/00
Arrangements for supervising or controlling working operations (indicating breaks or leaks in electric cables H01B 7/32; investigating fluid-tightness of pipes, cables, or tubes G01M 3/28)
 F17D 3/02
·  for controlling, signalling, or supervising the conveyance of two different products separated by "go-devils", e.g. for switching over from one receiving tank to another
 F17D 3/04
·  for preventing, indicating, or facilitating the location of leaks
 F17D 3/06
·  ·  by means of a signalling fluid enclosed in a double wall