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Because the inner area where the fluid moves has a gate which is shaped like a butterfliys wings. Passing through the centre of this gate is a rod which ends outside the valve where the handle is attached. When the gate is open it allows flow, when closed the gate seals off the valve stopping flow or if require can be partially turned to restrict flow
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Disadvantages of butterfly valve?
The use of butterfly valves for control applications is limited to the valve opening range between 30 degrees to 70 degrees. Throttling using butterfly valves is limited to low pressure drop applications. Potential cavitation is a concern when butterfly valves are used. Also possibility of a choked flow is a concern.
Which valve is the preferred valve to use as flow control valve at the pump discharge 8 inch size ball valve can be used for the same application?
I would use a butterfly valve to set the flow and a pitot tube to measure it. Nexus Valve makes a good one and it is price competetive as well.
Does butterfly valves with EPDM or BUNA-N seats require a gasket?
Wafer and lug style butterfly valves don't require a separate gasket. The same gasket acts as a seat and a seal against the flanges that hold the valve in place. An AWWA butterfly is flanged and would require flange gaskets to seal against the flanges on the pipe. The seat on an AWWA butterfly valves is to provide a seal to stop the flow of water only.
Why is a throttling valve called an expansion valve?
It is not.. A globe , needle , ball valve are used for throttling For expansion either a shock absorber , diaphragm tank or air chamber are used to allow for expansion
What is a spool type hydraulic valve used to control?
Hydraulic actuators. Also called hydraulic rams or hydraulic cylinders.
Why called butterfly for butterfly valve?
because this valve has a centric line through it, and control by a stem going through the disc and drive it open just like a wing of butterfly, that is why it is called butterfly valve
What is a gas butterfly valve?
A butterfly valve is from a family of valves called quarter turn valves. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is open, the disc is rotated a quarter turn so that it allows unrestricted passage. The position of the disc is effected from outside the valve. gas butterfly valve is one kind of butterfly valve, the main feature is that all the functions are supported by gas just as the Electric Butterfly Valve which supported by electric.
What is a gas valve?
A butterfly valve is from a family of valves called quarter turn valves. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is open, the disc is rotated a quarter turn so that it allows unrestricted passage. The position of the disc is effected from outside the valve. gas butterfly valve is one kind of butterfly valve, the main feature is that all the functions are supported by gas just as the Electric Butterfly Valve which supported by electric.
Who invented the butterfly valve?
The first carburetor butterfly valve was invented by Carl Benz in 1893.
What valve will give you rapid fire on a paintball mortar?
a butterfly valve.
Where is butterfly valve Volvo 850?
The only butterfly valve I am aware of is in the carbuerator and contols air flow. Few cans still use this item.
What was a butterfly called before a butterfly was called a butterfly?
The butterflies are called Caterpillars or they can be in a cocoon.
What is the difference between a globe valve and a butterfly valve in terms of application?
Globe is used for throttling
Were those tps140 go on a Saturn 2001twin cam 24 valve 3.0 liter v6 i looked every were?
The throttle position sensor is a device that signals the position of the butterfly valve of the throttle body. The throttle body is the part that is between the air intake and the intake manifold. Disconnect the air intake from the throttle body then have someone press the accelerator pedal. Watch the butterfly valve open and close as your assistant presses down and lets up on the pedal and you should see the butterfly valve moving. On the end of the rod that passes through the butterfly valve should be a sensor that detects the position of the butterfly valve. THAT is the TPS. There will be an electrical connector.
What is male butterfly called?
a male butterfly is called a male
What are butterfly professors called?
a butterfly professor is called a Lepidopterologist.
What is a butterfly valve used for?
A butterfly valve is from a family of valves called quarter turn valves. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is open, the disc is rotated a quarter turn so that it allows unrestricted passage. The position of the disc is effected from outside the valve. And the Steel butterfly valve is one kind of butterfly valve , the main material is steel.
