dump valve


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dump valve

[′dəmp ‚valv]
(engineering)
A large valve located at the bottom of a tank or container used in emergency situations to empty the tank quickly; for example, to jettison fuel from an airplane fuel tank.

dump valve

dump valve
i. The valve that allows the fuel in a tank to be dumped in flight quickly for emergency or operational reasons but mainly to bring the aircraft's weight to the maximum landing weight.
ii. An automatic valve that rapidly drains the fuel manifold when fuel pressure is below a predetermined level (e.g., at the time the engine is switched off). Also called a drain valve.
References in periodicals archive ?
When pressed, it will stop electrical functions and de-energize the control solenoid valve on the dump valve located at the pump station or at the headgate of the longwall.
Event Time (hh:mm:ss) Loss of offsite load 10:27 Turbine overspeed protection started 10:27:01 * (closure of turbine governor valves with steam dump valve opening) Alarm ROD BANK LO-LO LIMIT 10:28:18 Safety injection signal 10:29:02 "Unusual event" was declared 10:55 Diesel generator number 1 (2) stopped 11:20 (11:34) Reactor coolant pump number 1 restarted 11:55 Plant transited to a "hot standby" mode, 12:15 the termination of "unusual event" was declared * Estimated from measured data; LO: low; LO-LO is also called LO-2.
Dump valve activation was performed during main-period compression of the following cycle; the main and NVO period fueling were cut during the dump-sample collection cycle.
The vehicle is to be equipped with the RS' turbocharged 2.3-litre four-cylinder engine and upgraded engine management software that adds a high-flow air filter, along with a stainless steel mid pipe with an electronic dump valve.
His problems began when his dump valve hose repeatedly kept coming adrift during qualifying, leaving him on the back row of the grid for qualifying.
If the dump valve on the bottom of the loader does not seal completely, it can leak air and place a vacuum on the dosing valve and material bin.
Flexicon has introduced a Vacuum Receiver with a pneumatically actuated dump valve for dilute phase pneumatic conveying systems.
With a tank shower permanently connected to the mains, fitting a siphon dump valve can also help.
Air pressure in the boot is released via a dump valve, allowing it to collapse back to its former shape.
His subsequent quick replacement of the over-speed dump valve ended the dangerous fuel leak and continued safe CSAR missions.
Additional improvements, for increased safety and minimized downtime, include a relocated external dump valve and a new overpressure system to keep the lubrication oil clean, thereby increasing time between service.