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Artefact · M04 Gas supply, meters & regulators

Emergency control valve

ECV operation: open and closed positions, handle orientation and labelling.

Livev1.2.0 · Updated 25 Oct 2026
Present ⤢

What you're seeing

A cutaway emergency control valve (ECV) on a flexible connection, with its handle, ball and gas path. Operate the handle to open and close the valve and watch the flow stop and start. Drawn from general knowledge and awaiting review against IGEM/G/1, GSIUR and BS 6400-1.

What it shows

  • Open and closed handle positions
  • Operating the valve in an emergency
  • Labelling and access requirements