What are the different types of globe valves?
There are three basic globe valve body designs: Tee, Angle, and Wye.
What is a globe pattern valve?
Globe valves are closing-down valves in which the closure member is moved squarely on and off the seat. The oblique pattern globe- valve body is designed to reduce the flow resistance of the valve to a min- imum. This valve combines low flow resistance for on-off duty with the robustness of globe-valve seatings.
What is a composition disc?
The composition disk design uses a hard, nonmetallic insert ring on the disk. The insert ring creates a tighter closure. Composition disks are primarily used in steam and hot water applications. They resist erosion and are sufficiently resilient to close on solid particles without damaging the valve.
What is a valve disc?
marine. A movable cover which provides a variable restriction to fluid flow. A control valve may have two discs or valve plugs which are specially shaped to create the Valve characteristics.
What are the parts of a globe valve?
The main components of a globe valve are the actuator, stem, body, disc, seat, bonnet and some form of sealing arrangement (packing).
What is globe valve in boiler?
This ChemWorld 1/2″ NPT Globe Valve and is used for throttling or metering the flow restriction near the boiler sensor. Without a boiler globe valve false reading may be sent to your boiler blowdown controller, resulting in the boiler blowdown valve to power on/off repeatedly. …
Are globe valves linear?
Globe valves may be fitted with plugs of differing shapes, each of which has its own inherent flow/opening characteristic. The three main types available are usually designated: Fast opening. Linear.
Where is a globe valve used?
Globe valves, so-called because of their outside shape, are widely used in plant piping. They are suitable for manual and automatic operation. Unlike the gate valve, globe valve can be used for regulating flow or pressures as well as complete shutoff of flow.
How can you tell the difference between a gate valve and a globe valve?
The gate can be shaped like a wedge, knife, or parallel. Physically, gate valves are higher than globe valves when fully opened, but have a smaller face to face length. The gate being moved up or down is easy to visually acknowledge as the valves operate with either a rising stem or a non-rising stem.
Where is a disc valve used?
They are typically made of inert metals such as stainless steel and handle dairy, pharmaceuticals, beverages, cooking oils, and other food/chemicals. The disc valve is especially popular when used as a sanitary valve, as they can handle various viscosities, slurries, and provide good shut off for these applications.