Assertion: safety valve's pressure | /r/HasProperty | preset
Facets:
Source sentences:
text: Pressure relief valves (safety relief valves) are designed to open at a preset pressure and discharge fluid until pressure drops to acceptable levels.
text: Most relief valves simply lift (open) at a preset pressure and reset (shut) when pressure drops only slightly below the lifting pressure.
text: In the event of this occurring, the safety pressure relief valve will release at a preset pressure.