A flange globe valve is used to direct the flow of fluid in a process. The valve has a seat attached to the stem, which must be turned in to close the valve. Once closed, the disc and seat form a tight seal, preventing system pressure from building up against the valve. The disc and seat are usually connected by a T-slot or disk nut design.
A flange globe valve is shorter than the straight rising stem type, but it does have the same basic functions. The valve has a flange, a bonnet, and a metal seal, usually bronze. The materials used to make this type of valve should be suitable for the fluid to be regulated. Zinc free bronze is recommended for applications with warm seawater. Other fluids that are suitable for this type of valve include steam, flammable hydraulic oil, and condensate.
Another design option is the Wye Pattern Globe valve. This type of valve uses a stem and seat that are angled at 45 degrees to allow the highest flowpath and least pressure drop at full opening. Another advantage of this type is that it can be cracked open without experiencing severe erosion. This makes this type of valve ideal for throttling in seasonal operations and for regulating flow levels. Unlike the straight type, this type of valve can also be roded through to remove debris.
When choosing a flange globe valve, make sure the disc type suits the requirements. For example, if it is being used for high-pressure applications, it is best to choose a valve with a high differential pressure. For high-pressure applications, a flanged globe valve will not be suitable.
Another common use for globe valves is to cut off pipeline flow. Their regulating ability is superior to a gate valve, and they are easier to manufacture and maintain. This valve also offers less friction between the sealing surfaces. The resulting seal provides excellent shutoff performance and long service life. However, there are a few downsides to this type of valve.
Besides being versatile, a flange globe valve also has a number of advantages. It is easy to install and maintain and can be used for both high and low pressure applications. It can handle medium to high temperatures. It is also durable and suitable for medium-pressure applications. This type of valve is commonly used in residential and commercial settings.
A flange globe valve can be straight or angled. The outlet pipe is directed towards the bottom of the valve, which prevents clogging and corrosion. An angle valve, on the other hand, has a 45 degree angle. This type is commonly used for start-up operations and seasonal operations. Consulting an engineer will help you choose the right globe valve for your needs. A properly selected globe valve can significantly reduce your maintenance costs.