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Rupture disks and pressure safety valves (psvs) are both types of relief valves. Rupture disks are thin sheets of metal that break at a designated pressure and can only be used one time. Pressure safety valves also relive at a specified pressure, but work by a spring and can relieve multiple times with little or no damage to the relief device.
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How do electro valves work?
The question is somewhat vague, but basically any valve that is operated with any form of electricity can be considered 'electro'. Esentually, it could be a simple on off type of valve whereby a coil designed to accept a certain voltage level and capable of handling a certain ammount of power (Voltage x Current) will form a magnetic field when the voltage is applied, and move an internal plug that either covers or uncovers an oriface, which will in turn open or close a valve. More involved 'electro' valves may have motors that will move a stem in a proportional way to open or close a port through a valve partially.
What is the power calculation formula for Rotary air lock valve?
You need to know the torque the motor needs to produce to operate the valve before you can specify the motor. It's all about the amount of power that needs to be delivered to any application that is critical in specifying motors. Motors are rated according to the power needed, so once you have that, then you can select the motor according to rpm and power supply.
Why are blow out panels used in aircrafts?
A rupture disc or blow out panel is a non-reclosing pressure relief device that protects a pressure vessel, equipment or system from overpressurization or potentially damaging vacuum conditions. Rupture discs are commonly used in petrochemical, aerospace, aviation, defense, medical, railroad,nuclear, chemical, pharmaceutical, food processing and oilfield applications. They can be used as single protection devices or as a backup device for a conventional safety valve; if the pressure increases and the safety valve fails to operate (or can't relieve enough pressure fast enough), the rupture disc will burst. Rupture discs are very often used in combination with safety relief valves, isolating the valves from the process, thereby saving on valve maintenance and creating a leak-tight pressure relief solution.
What are condition in which dndt protection act during steam turbine rolling?
dn/dt acts: 1)gcb open. 2)Turbine speed reference is less than 2800. 3)TSE margine less than 30k. 4)Actual speed is lees than 2800 5)ip valve passing during rolling
What is the alternative to a plumbing roof vent?
The alternative to a plumbing roof vent is an AAV. This is an Air Admittance Valve, a simple spring loaded ABS fitting that serves exactly the same function as a roof vent, except that it does not penetrate the roofing. I used 4 of these while re-plumbing my mobile home, three under countertops and one in the wall behind toilet. I'm very happy with their performance and even happier at having less holes in the roof.
What is the difference between check valve and nonreturn valve?
There is no difference between check valve and NRV, both are same
What is the difference between solenoid valve and control valve?
I believe that servo is motorized and solenoid is magnetically activated.
How can you tell the difference between intake valve and exhuast valve?
no you cant
What is the difference between a sillcock valve a boiler valve and a hose bibb valve?
They are just about the same
Difference between UV valve and XV valve?
XV is shutoff valve UV is under control valve
What is the functional difference between cock and valve?
The term cock and valve are used interchangeably in the English language. The term cock has in large been replaced with valve with no functional difference between the two.
What is the difference between 2 valve and 4 valve engine?
In short, More Power.
How do you tell difference between exhaust valve and intake valve on 1998 suburban 5.7?
The intake valve is bigger.
What is the difference between a globe valve and a butterfly valve in terms of application?
Globe is used for throttling
What is the difference between a positive and a negative EGR Valve?
A positive EGR valve has purple fireflies on it.
What is the difference between a control valve and a gate valve in a stand pipe system?
a gate valve is a one way totally open or closed valve, a control valve is a variable valve.
What is the difference between gate valve and OS and Y valve?
OS and Y stands for Opposed Stem and Yoke.
