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Control Valves by Robertshaw

Valutech carries Robertshaw control valves designed for rugged and reliable use in light industrial applications such as low-pressure steam, water, or air. Their flexible and tested designs are used by process industries, manufacturers, utilities and the military. As a variable orifice or restriction device that can be installed in piping, these control valves are among the most common final control elements in a classic control loop.

How They Work
Robertshaw diaphragm actuated control valves are designed to control the flow of a fluid passing through a valve by responding to a pneumatic signal from an instrument or pilot controller. The opening, closing and throttling action of the valve is controlled by changes in the instrument output pressure as it responds to changes in the system being controlled.

Kinds of Control Valves
Robertshaw control valves are diaphragm actuated pneumatic control valves with globe style bodies. The multi-spring actuator styles VC230A/VC231A are very versatile 30 - sq. in. diaphragm actuators. They are offered in direct- or reverse-acting styles and are field reversible. They can accommodate a variety of valve assemblies ranging from narrow reduced port styles to 6 in. 3-way styles. The 10 - sq. in. Model VC-210 is also quite versatile and is bellows sealed. It is available with direct, reverse, or 3-way action, and in brass or stainless steel constructions.

Application
For the most part, Robertshaw valves are used for control in light industrial applications such as low-pressure steam, water, or air. A great number of applications exist for virtually any type of wet process including pigment & dye machinery, commercial buildings, natural gas pipelines, food and beverage, etc.

Robertshaw offers three categories of control valves for all your industrial needs:

Model VC-210
The Mini-Max VC-210 valves, noted for their bellows-sealed stems, are built with stainless steel investment castings and are specially designed for the control of water, steam, gas and vacuum.
Model VC-210 B
Compact, constructed for rugged environments and designed for control of water, gas, vacuum and more. This is the econoical brass version of the VC-210 valve series.
Models VC-230A and VC231A
The VC-230A and VC-231A are spring-opposed diaphragm actuators. They are designed to provide dependable on/off or throttling operation of control valves.

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