Gate Valve is
* Well sealed * Causes a low pressure drop * Don`t Cause hammering
* serve Wide size Range * Wide range of temperature
* Wide range of temperature Ball Valve is
* Limited in usage for Temperature cautions * Needs a big Operating Torque for big Sizes
gate valve. globes are used for throttling and have far too many turns. ball valves are not made for thick stuff. this question was on the inter-provincal exam they had globe valve, gate valve, diaphragm valve and piston valve. for answers too choose from.
A ball valve is a contrivance by which a ball, placed in a circular cup with a hole in a bottom, operates as a valve.
Ball valve is usually preferable. full flow with no restriction and a lot easier and faster to turn off when needed.
the gate and the valve.
No. Gate valves are designed to be either completely open or completely closed. Regulating flow is best done with a globe or plug valve, or certain kinds of ball valves. A gate valve left partially open will eventually wear down so that it can never be completely closed.
Never ever use a Gate type of valve for throttling ONLY a globe pattern is designed for this purpose and a needle valve
Where one would use either a gate or globe pattern type A ball valve is used to turn water , gas or oil on and off.
gate valve. globes are used for throttling and have far too many turns. ball valves are not made for thick stuff. this question was on the inter-provincal exam they had globe valve, gate valve, diaphragm valve and piston valve. for answers too choose from.
For Ball valve only,as it gives more full bore flow,unlike wedge block,slow operating in Gate valve.
a gate valve is a valve you turn the handle round and round until it shuts off a ball valve is a valve with a lever that you turn 1/4 turn and its off hope this helps plumber paul
The gate valve has NO advantages that I can easily think of. They are slow and clumsy to operate, they are prone to corrosion and they have a bad habit of breaking the shaft. If I had my way, I would replace every gate valve with a ball valve which is easier to use, easier to see if open or shut and far more reliable.
A ball valve is a contrivance by which a ball, placed in a circular cup with a hole in a bottom, operates as a valve.
Application is shutting off supply, usually water. -Gate valves are 'Old hat' and inefficient, get a new ball valve instead.
By shutting off a valve before it before attempting any repairs then it would depend on what type of valve your talking about globe/ gate / ball as each one is totally different
Ball valve is usually preferable. full flow with no restriction and a lot easier and faster to turn off when needed.
Every valve is used for a specific application such as a lift check valve ,soft seat check valve, gate check valve, OS&Y valve, globe , gate and various models of each. A ball valve generally has a higher WOG pressure rating and many use it as one valve fits the majority of applications One would dare not use a ball valve on a fire suppression system or a street main shut off . On high pressure applications a Ball valve being a quick closing valve can cause a lot of damage when it is closed to fast causing a hydraulic shock wave (water hammer)
An air valve is a spring loaded plastic valve for ventilation. A gate valve is an old fashioned type of water valve where turning a handle lowers a blocking gate over the water inlet. Any sensible plumber now uses ball valves instead.