Why you should use globe valves for steam applications?

When considering the industry standard for steam control, we often look toward the globe valve. In this informative article, BM Engineering discusses why globe valves should be considered as the actuator of choice for steam applications. As globe valves excel at regulating flow, they are the most commonly used control valve for modulating purposes. Because of this, globe valves are often our go-to recommendation for steam applications.

Explaining globe valve operations

Before we begin, let’s quickly cover globe valve operations. Typically, globe valves are used for regulating flow in pipelines. Instead of having the “all or nothing” approach of a gate valve, globe valves regulate by the position of a movable disk (or plug) in relation to the stationary ring seat.

The most typical operation for a globe valve is throttling flow control. They are designed to stop, start and regulate the flow of a particular media in linear motion. However, they can also cater to changes in direction, which result in greater resistance to flow and higher pressure drops.

While they are an excellent choice for on-off services, globe valves are much better suited to frequent cycling and control of media between the open and closed positions. Globe valves are hugely versatile, which means they can cover a wide range of flow ranges in various applications. One common globe valve application is steam control.

Globe valves for steam applications

When considering a control valve for steam applications, temperature and pressure considerations will play an important role in your decision-making. The higher both of these are within your chosen application, the more this affects the steam and the valve in place.

Whereas most other valves would see the steam break through and tear it apart, globe valves offer greater resilience and could theoretically last for years in some applications.

The type of valve most commonly compared alongside globe valves is gate valves. Both have the same purpose, to control the flow of media. However, gate valves should always be left either open or closed. If gate valves were to be left partially open as globe valves are, they would eventually be rendered useless.

In addition, gate valves would not be well suited for throttling, as this would result in excessive wear due to wire drawing and seat erosion. Similarly, ball valves would also succumb to damage if they were left partially open in steam applications because they lack fine control.

The additional advantage offered by globe valves in steam applications is their ability to reduce flow with accuracy. They are widely used to obtain a flow that can be calculated with exceptional precision. Something that is highly desirable in steam control applications.

Steam control valves from Valsteam ACDA

For optimal control in steam applications, we would recommend globe valves from Valsteam ACDA. Suitable for a wide range of applications, they are well suited to steam applications due to the ability to work well with non-corrosive fluids. Because of their large surface area, diaphragm style actuators such as the PV25 allow for precise steam control.

Leading globe valve suppliers

At BM Engineering, we supply globe valves for a wide variety of applications. We stock globe valves up to six-inches in size and can supply many size or material variants on a next day basis.

To purchase globe valves in Scotland and the UK, or to learn more about our range of control valves, get in touch with BM Engineering Supplies today on 0141 762 0657 or email sales@bmengieering.co.uk.