- Industry: Fire safety
- Number of terms: 98780
- Number of blossaries: 0
- Company Profile:
Established in 1896, NFPA's mission is to reduce the worldwide burden of fire and other hazards on the quality of life by providing and advocating consensus codes and standards, research, training, and education.
A valve used to control the flow of fuel into an accumulator.
Industry:Fire safety
A valve used for letting atmospheric air into a vacuum system. The valve also is called a vacuumbreaker.
Industry:Fire safety
A valve that, when actuated, diverts hydraulic fluid from one function to another or from one hydraulic system to another; in aerial devices, it is the valve that diverts hydraulic fluid from the hydraulic system for the stabilizers to the hydraulic system for the aerial device when the aerial device is in use and from the hydraulic system for the aerial device to the hydraulic system for the stabilizers when they are being deployed or stowed.
Industry:Fire safety
A valve that, upon shutdown conditions, will close automatically within 1 second to completely stop the flow of gas to the engine.
Industry:Fire safety
A valve that when fully opened has a non-fouling passageway not less than the inside diameter of connected piping.
Industry:Fire safety
A valve that maintains hydraulic pressure in a hydraulic actuator (cylinder, motor, etc. ) until it is activated to release.
Industry:Fire safety
A valve that has components that show if the valve is open or closed. Examples are outside screw and yoke (OS&Y) gate valves and underground gate valves with indicator posts.
Industry:Fire safety
A valve that has a mechanism to prevent movement of the flow-regulating element from the fully closed position to the fully opened position or vice versa in less than 3 seconds.
Industry:Fire safety
A valve that closes a path of deflagration propagation in a pipe or duct in response to upstream detection of a deflagration.
Industry:Fire safety
A type of pressure relief device designed to both open and close to maintain internal fluid pressure.
Industry:Fire safety
