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Direct operated valves

Direct operated valves

incorporate a temperature sensor inside the valve, and operate independently of external power supplies.

Electrically operated valves

Electrically operated valves

are powered by an external electric actuator, with control provided by a separate electronic control unit, and temperature sensing by resistance thermometer.

Pneumatically operated valves

Pneumatically operated valves

are powered by an external pneumatic actuator, with control provided by a pneumatic controller with external temperature sensing.

Gas operated valves

Gas operated valves

are designed to control refrigerant gas pressures – and hence the temperature of refrigerated or air-conditioned areas – in marine systems in which the condenser is cooled by sea water.

Temperature control mechanism installed within engine or gas turbine

Walton Engineering has long-standing, established relationships with major diesel engine and industrial gas turbine manufacturers whereby the Walton direct acting temperature control mechanism has been integrated into the power plant at its design stage for the control of lubricating oil temperature.

The advantage of this arrangement is that it dispenses with the need for the valve body and associated external pipework. The overall system is therefore lighter, more compact and cheaper. In addition, the shorter internal oil paths allow the mechanism to respond rapidly to temperature changes, and therefore provide more accurate control.

The gas turbines in which the Walton temperature control mechanism is fitted are themselves installed in a variety of marine and power generation applications in the oil and gas industry, with many employed on offshore platforms.

This evolution of the Walton valve is another example of the degree of customisation that is possible based on the standard valve mechanisms.

  
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