bleed valve


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bleed valve

[′blēd ‚valv]
(engineering)
A small-flow valve connected to a fluid process vessel or line for the purpose of bleeding off small quantities of contained fluid.

bleed valve

A valve designed to relieve the back pressure in a compressor, which helps to reduce the angle of attack of the rotor blades and prevent compressor stall and compressor surge. A bleed valve permits higher mass airflow through the compressor and reduces the mass flow through the combustion chambers and turbine. This minimizes the tendency to stall or surge. Also known as an air-release valve, a bleed valve, and a pop-off valve.
References in periodicals archive ?
Then follow the rest of the air bleed valve installation procedures called out in IETM 9-1055-1646- I3&P [see "Hydraulic Fluid Reservoir Air Bleed Valve Removal and Installation "], including the HCS maintenance follow-on procedures [see "HCS After Maintenance Follow-on Procedure"].
A stroke time of an inter-stage bleed valve (IBV) could possibly be as fast as two seconds.
Re-tighten the bleed valve and wipe away excess grease.
Fit the bleed key into the bleed valve and carefully turn it anti-clockwise only a little, usually just a quarter or half turn.
Smiths Aerospace scope of equipment consists of the bleed air system controller, the pressure regulating and shutoff valves (PRSOVs), fan air valves, cross bleed valve, wing and horizontal stabilizer anti-ice valves, and the engine reverse flow check valves.
The high-pressure access fitting covers feature a bleed valve to release any pressure buildup and a pressure gauge to show any pressure that may have accumulated.
Turn the key anticlockwise in the bleed valve at the top of the radiator and you'll hear a hissing sound, which is the sound of the air releasing.
The bleed valve is usually at the top of the radiator and the shape of the hole will determine what you use to bleed it.
To bleed a radiator, insert the radiator key or screwdriver into the bleed valve and turn slowly to open it.
To loosen track tension, slowly open the bleed valve on the track adjuster to let grease out.
EDO will produce composite Variable Bleed Valve ducts for the GEnx engine using specialized composite braiding and resin-transfer-molding technologies.
To solve the problem, cover the floor under the bleed valve (usually at the side of the radiator) with newspaper or a dustsheet, insert a radiator key or small screwdriver and carefully turn it until you hear air escaping.