A ball valve is a ball with a hole through it that rotates around its axis to expose the hole for flow or the solid wall of the ball for no flow. The butterfly valve is a flat piece that is supported in the middle by a shaft that opens or closes when the shaft is rotated.
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.
There is no difference between check valve and NRV, both are same
I believe that servo is motorized and solenoid is magnetically activated.
The first carburetor butterfly valve was invented by Carl Benz in 1893.
The difference between the GGG-40 and GGG-50 butterfly valve is the suitable temperature. The GGG-40 is recommended for 45 degrees C to 150 degrees C and the GGG-50 is recommended for 35 degrees C to 130 degrees C.
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.
Globe is used for throttling
There is no difference between check valve and NRV, both are same
I believe that servo is motorized and solenoid is magnetically activated.
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
no you cant
The first carburetor butterfly valve was invented by Carl Benz in 1893.
The difference between the GGG-40 and GGG-50 butterfly valve is the suitable temperature. The GGG-40 is recommended for 45 degrees C to 150 degrees C and the GGG-50 is recommended for 35 degrees C to 130 degrees C.
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.
They are just about the same
XV is shutoff valve UV is under control 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.