Globe Valves
Overview
Globe valves are known for effective controlling and throttling of fluids. Sometimes called the throttle valve, globe valve functions in three ways: stop the flow, start the flow or throttle the flow.
It has a round-shaped valve body containing disc which then acts as a gate. Use globe valves if maintaining pressure level or reduction in pressure loss is not the top priority, but requires control to media flow.
How Do Globe Valves Work?
Water faucets are the best example to show how globe valves work. Turning on the faucet means raising or lowering the stem, depending on the design. Water then comes out of the faucet. When turned to the other direction, say, turned off, the raised gate is lowered or the lowered gate is raised.
The number of turns affects the volume of water that goes out of the faucet. Similarly, by controlling the wheel of the valve, a certain volume of gas or liquid passes through the valve. A fully turned on globe valve means the flow rate is at its maximum. On the other hand, a fully turned off globe valve means sealing of the valve.
Technich Data
Considerations When Buying Needle Valves
End connections
1/4 to 1/2 thread
1/16″ to 3/4″ and 3 mm to 18 mm tube fitting
Who this course is for
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Certification
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What You'll Learn This Class
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Difference
Globe Valve vs Needle Valve
The biggest difference between needle valve and stop valve is valve disc, followed by the size and structure of appearance. The disc end of the needle valve is inserted into the valve seat seal like a needle, while the disc of the stop valve is conical and the end face is flat.
Needle valves generally use fine pipes, and there are many kinds of connection methods, such as flange connection, external thread connection, internal thread connection, movable casing welding, butt welding, socket welding, ferrule, movable internal thread and so on. The stop valve is generally flange connection, butt welding and socket welding, which are more common. The middle of needle valve is generally nut, while the middle of stop valve is flange.
Benefit From Your Committed Valves and Fittings Manufacturer
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