relief valve


  • WordNet 3.6
    • n relief valve 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
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Webster's Revised Unabridged Dictionary
    • Relief valve a valve arranged for relieving pressure of steam, gas, or liquid; an escape valve.
    • ***


In literature:

The French are very badly fitted with relief-valves.
"A Diversity of Creatures" by Rudyard Kipling
If the grade line is too high, relief-valves are used, as stated.
"The Water Supply of the El Paso and Southwestern Railway from Carrizozo to Santa Rosa, N. Mex." by J. L. Campbell
The design of the atmospheric relief valve received special consideration.
"The New York Subway" by Anonymous
What is a vacuum relief valve?
"The Traveling Engineers' Association" by Anonymous
They were his only relief, and safety-valve.
"The Cricket on the Hearth" by Charles Dickens
Relief valves should be furnished at the discharge side of each feed pump and on the discharge side of each feed heater of the closed type.
"Steam, Its Generation and Use" by Babcock & Wilcox Co.
Thanks for being such a nice pressure-relief valve.
"Masters of Space" by Edward Elmer Smith
The relief valve should also be water-sealed.
"Steam Turbines" by Hubert E. Collins
They were his only relief, and safety-valve.
"The Cricket on the Hearth" by Charles Dickens
Relief valve Soupape de trop plein.
"English-French and French-English dictionary of the motor car, cycle, and boat" by Frederick Lucas

In news:

Controls are easily interchanged and a high-pressure relief valve is available.
Solenoid, pilot-operated relief valve is available with standard relief settings of 1000 to 3500 psi for 10 cavity sizes.
It has a pressure-compensated pump with a safety relief valve to limit pressure spikes.
Smoke from relief valve reported at Shell refinery in Martinez.
This is a detailed engineering study of a pressure compensated system that uses a fixed-displacement pump, but no relief valves.
The 375 high-pressure PRI relief valve is designed for high back-pressures to 850 psig.
Hot oil shuttle with relief valve fits into size 10 cavities.
Springless valve is available with builtin relief setting of 100 to 400 psi and flow rating of 6 gpm at operating pressure of 5000 psi.
Would water in thermal relief, operating at 100 F and the relief valve setting at 150 psig at 373 F, relieve as steam.
Rescue ONE's Inflatable Boat Series models feature five separate air chambers, each with its own fill valve and pressure-relief valves to enable the boat to be filled with an SCBA or SCUBA bottle without fear of bursting the tube More.
Pressure may build up inside a hot water tank that causes the emergency relief valve to open releasing water.
For residential and commercial applications Matco-Norca offers its Tankless Water Heater Kits consisting of separate Hot and Cold Valves with Pressure Relief Valve included.
About 20 pounds of ammonia was released early Tuesday when a relief valve opened on the top of the huge ammonia tank at DuPont Co.'s Belle plant.
Volvo's ECO mode controls pump flow to avoid the inertia from overflowing the overload relief valves while maintaining digging power and maximum swing torque.
The pressure relief valve assembly is on the right (3).

In science:

So we are testing an autonomous mechanical system based on a calibrated relief valve and a calibrated diving pressure regulator to respectively reduce or increase the inside pressure of the robot with respect to the outside pressure.
The eel-like robot
The tiny fill tube is a huge impedance to the gas flowing out of the jacket. Effectively we have created a big bomb. A pressure relief valve was developed to bleed off excess pressure in an emergency, thus protecting the cell from bursting.
Bose-Einstein Condensation of Atomic Hydrogen
We constructed a reusable pressure relief valve which provides this high conductance escape path.
Bose-Einstein Condensation of Atomic Hydrogen
The design of the relief valve is conceptually divided into a pressure-sensing part and a seal-breaking part.
Bose-Einstein Condensation of Atomic Hydrogen
Figure 3-10: Cross-section through the pressure relief valve. A VCR fitting brazed into the base makes a superfluid tight vacuum connection to the superfluid jacket through 2 mm ID tubes.
Bose-Einstein Condensation of Atomic Hydrogen