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The Use Of Control Valves
The main purpose of control valves is to control conditions. By fully or partially opening and closing control valves one can control flow, pressure, temperature and liquid levels. This is achieved by supplying the valve with signals from the controllers that the sensors monitor by comparing a “setpoint” to a “processvariable”. This differs from safety valves in that the release of substances is more controlled, whereas safety valves release substances once the pressure or temperature exceeds the preset limits.
There are various types of control valves, the most common of which are sliding-stem globe and angle valves. The control valve bodies are generally categorized as follows:
- Angle valves
- Angle seat piston valves
- Globe valves
- Diaphragm valves
- Rotary valves
- Sliding cylinder valves
- Air operated valves
Specialising in various types of valves, including control valves, safety valves and ball valves, Bestobell are able to source all kinds of valves through their extensive worldwide network with some of the most leading brands. This enables Bestobell to provide you with valves to specifically suit your requirements and specifications.
As a registered South African company that first opened its doors in 1897, Bestobell offers clients more than 100 years of service experience. As a wholly owned subsidiary of the Hudaco group they have a standard stock range available – and if they don’t have it, they can source it for you. So if you are in need of ball valves, control valves, safety valves or any other type of valve, be sure to contact Bestobell today.
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