Synonym of safety valve

n.

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

channel release escape valve means of escape outlet relief valve medium avenue instrument vehicle vent means platform way of harnessing release mechanism means of expression means of release forum soapbox venue conduit agency route pathway course mechanism way organ agent technique approach mode path instrumentation method procedure instrumentality pipeline mode of expression ministry machinery apparatus system expedient process factor ways and means force organization manner measure power stage tactic catalyst structure auspices intermediary road aid modus operandi organisation fashion workings setting gimmick equipment trick paraphernalia step operation stepping-stone machine tool implement instruments dashboard instrument panel controls dials console control panel dodge cause showcase springboard action activity wherewithal material work influence stepping stone methodology administration institution effect scheme engine way in vector mouthpiece scene backdrop place framework form means of access context cogs mechanisms channels public square marketplace efficiency help support assistance voice intermediate accouterment motor arrangement opportunity environment measures nitty-gritty set-up meeting place means of communication

overflow valve safety device fail-safe safety precaution insurance shield guard screen protection safety net preventive measure safety plug sheet anchor buffer fallback protective umbrella safeguard bulwark cover buckler armor ward ammunition wall aegis armament armour egis bumper rampart pad cushion fender fence protective device safety safety guard security defence precaution preventive surety escort prophylactic shelter indemnity defense palladium caution convoy safety measure provision

outlet pipe valve vent duct funnel nozzle opening spout outfall mouth blowhole pore tube porthole vent hole blow-off inlet channel passage aperture hole orifice drain shaft conduit flue airway pipeline port chimney well canal trough lip line air passage culvert socket door trap embrasure gate entrepôt smokestack chimney stack drainhole bunghole waste pipe smoke duct exhaust pipe ventilation shaft tubing piping hosepipe siphon plughole rose syphon hose drainpipe waterspout rainspout gutter leader penstock vessel garden hose trachea ductule ductus vas watercourse aqueduct course spile sparkler gap space spray eaves trough cavity cleft slit split breather avenue exhaust exit ventilator escape

safety valves safety zone safflower saffron saffrons saffron yellow safety switch safety strap safety stocks safety stock safety seat safety risk