Drayton Controls Motorised Valve Body 22mm 2 Port 27600

The Drayton Controls 27600 is a two-port motorised valve body in 22mm, listed under catalogue number 679-2. It sits in the pipework of a domestic heating system and opens or closes the flow of water to a heating or hot water zone when driven by a motorised actuator head. The body is supplied on its own, so the existing actuator can be assessed before the job is booked in.

• The zone stays cold even though the actuator head is running and the boiler is firing.
• The valve passes water when it should be shut, so a zone heats up when it is not calling.
• The spindle is stiff, seized or will not turn freely by hand with the head removed.
• Water weeps from the body, the spindle gland or a union joint.
• The valve chatters or the flow through the zone is restricted and uneven.

• Confirm the pipework is 22mm and that the existing valve is a two-port 679-2 pattern.
• Check the part number on the old body or actuator against 27600 and 679-2 before ordering.
• The body is listed as body only, so check the condition of the actuator head and whether it is being reused.
• Have the system drained or isolated before removing the old body, and check the unions and seals on refitting.