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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.

About Us

Established in 1942, Walton Engineering has been designing and manufacturing temperature control systems for more than 60 years. These systems are sold world-wide, and our direct operated range of valves is also manufactured in Japan.

Production began with valves powered by simple bi-metal coils which were originally installed on diesel engines for rail locomotives. The bi-metal coil was later replaced by a fixed range wax element incorporated into a mechanism within the valve body, the position of the valve’s rotor being determined by the expansion of the wax element. A variety of alternative actuation and control methods have been added over more recent years, so that today a full range of temperature control products is available.

The Royal and other navies have relied on Walton systems for over forty years, and many of the original valves are still operational. Walton products are approved by the UK’s Ministry of Defence and all leading classification societies.

Walton is accredited by National Quality Assurance to the international quality assurance standard BS EN ISO 9001:2008. A copy of our current certificate is available here. This provides customers with the highest level of confidence in Walton's quality control processes and procedures. All products are subjected to in-process and final inspection by a dedicated inspector. Sales orders are tracked through Walton's computerised manufacturing management system which controls all aspects of production and ensures that a high standard of delivery performance is maintained.

We are always willing to consider creating a customised solution to meet the needs of a client if our standard products are not suitable. The flexible nature of the basic Walton valve design means that this can often be a cost-effective approach.

Walton Engineering has its Head Office and manufacturing unit in St. Albans, England.

  
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