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PCE
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DIFF Subgroup
F17D 3/03

for controlling, signalling, or supervising the conveyance of several different products following one another in the same conduit, e.g. for switching from one receiving tank to another

Introduced: July 1974

Full Title

Arrangements for supervising or controlling working operations > for controlling, signalling, or supervising the conveyance of several different products following one another in the same conduit, e.g. for switching from one receiving tank to another

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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  • F17D 3/05 the different products not being separated (separation of contaminants by distillation B01D3/00) since 1974 IPC+CPC Available in IPC and CPC
  • F17D 3/08 the different products being separated by "go-devils", e.g. spheres (cleaning devices moved along inside a pipe-lines by fluid pressure B08B9/04; ) since 1974 IPC+CPC Available in IPC and CPC