Betekenis van:
safety valve

safety valve
Zelfstandig naamwoord
  • voorziening t.b.v. de veiligheid
  • a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level




  1. Safety valve
  2. check valve or non-return valve (if used as a safety device);
  3. flexible fuel line (if upstream of first automatic shut-off valve or other safety devices);
  4. Class 3 Medium pressure parts as safety valves or protected by safety valve including tubes and fittings containing CNG at a pressure higher than 450 kPa and up to 3000 kPa (3 MPa).
  5. A temperature-indicating instrument is to be connected to the meter pipe downstream of the orifice plate to indicate the temperature of the air flowing to the safety valve.
  6. ‘Electronic control unit (CNG — fuelling)’ means a device which controls the gas demand of the engine, and other engine parameters, and cuts off automatically the automatic valve, required by safety reason.
  7. Cylinders not immediately closed by the fitting of a valve, and safety devices if applicable, shall have plugs, which prevent entry of moisture and protect threads, fitted to all openings.