.

 

walton ENGINEERING CO. LTD.

Electrically Operated

Home Contacts Contents

Up
System Design
Applications (Electric)

The Walton electrically controlled system comprises a 3-way valve with electric actuator, an electronic controller and a platinum resistance thermometer (PRT).

The controller periodically samples the temperature of the coolant system via the PRT and compares this with the predetermined set temperature.  If necessary it sends a signal to the valve's actuator to adjust the position of the rotor within the valve.  This varies the proportion of coolant passing through the system's cooler to bring the system temperature in line with the set temperature. 

The principle advantages of electric over direct operated valves are:

bullet

Increased flexibility in application

bullet

In sea water circuits the separation of the main operating mechanism from the circulating fluid will minimise corrosion problems.

bullet

Increase in power and speed of operation

bullet

The ability to sense the temperature remote from the valve.

Sizes range from 25mm (1") bore to 350mm (14") diameter.  The flow rates that these valves can accommodate are shown here.

The valve can be supplied to any one of six possible handings to suit the piping arrangement.

The 3-way valve body is of the standard Walton type and interchangeable with the bodies used for the range of direct operated valves.  This means that it is a simple matter to convert a valve from direct or pneumatic to electric operation, and this can usually be achieved without removing the valve body from the system or modifying the pipework.

A description of the electric valve is shown here. 

A description of the electronic controller is shown here. 

The system can be supplied in either 220/240V or 110/120V AC 50/60Hz 1 phase.

Supplier of Temperature Control Valves and Optical Projectors
Copyright © 2009 Walton Engineering Co. Ltd.