Actuator Valves

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Buying guide: Actuator Valves

An actuator is the motorised head that opens, closes or positions a valve when the heating or building controls signal it. This category covers zone valve and boiler diverter valve heads, underfloor heating manifold actuators, rotary actuators for mixing valves and dampers, linear actuators for control valves, and gas valve actuators.

Matching the actuator

  • Valve and fitting: actuators are made for particular valve bodies, or fit others through an adapter kit. Check the make and model of the valve, or of the boiler for a diverter valve head.
  • Movement: rotary actuators turn the spindle of a mixing, ball or butterfly valve, while linear actuators push and pull the stem of a seat or globe valve.
  • Supply voltage: most run on 24V or 230V, and the actuator must match the controls it is wired to.
  • Torque and running time: ratings are given in newton metres and seconds; compare them with the original.

Control signals

Two-point actuators simply open or close, which suits diverting duties. Three-point, or floating, actuators drive the valve open or closed in stages and suit mixing duties. Proportional or modulating actuators follow a variable voltage or current signal, such as 0 to 10V, so the valve can sit at any position for mixing and flow control. A replacement must accept the controller's signal type.

Safety

Isolate the electrical supply before work and follow the wiring diagram. In England, a new circuit is notifiable under Part P of the Building Regulations and must be done by a registered competent person or notified to building control. Work on gas pipework, appliances and their gas parts must only be carried out by a Gas Safe registered engineer, and that includes gas valve actuators.

For the valves themselves, see central heating valves, or browse heating controls.

About Actuator Valves

BHL lists actuator valves products within the Heating Controls range of our Heating & Plumbing department. Brands with products here include Belimo, Honeywell and Siemens.

Brands

Brands with products in Actuator Valves at BHL include those listed below, each linked to its own brand page.

Finding products in Actuator Valves

Actuator Valves has no sub-categories: all of its products are listed on this page.

Brands with products in actuator valves include Belimo, Honeywell and Siemens, and each brand page linked on this page lists that maker's products at BHL.

Actuator Valves sits within Heating Controls alongside Wireless Thermostats, Wired Thermostats and other sub-categories.

Actuator Valves FAQs

What does the Actuator Valves range at BHL include?

Products from the brands linked on this page.

Which brands appear in actuator valves at BHL?

Brands with products here include Belimo, Honeywell and Siemens. Each name links to the brand's own page.

How do I find a specific actuator valves product?

Narrow the list first: the brand pages linked on this page each hold a smaller set of actuator valves products, one manufacturer's.

Related categories

More brands in actuator valves: Worcester Bosch, Satchwell Controls, Invensys Drayton, Baxi, Geberit, Albion, Biasi, Vaillant, Rwc Uk Ltd and Ariston.

Back to Heating Controls, or continue to Wireless Thermostats and Wired Thermostats.