I have a Model 679H340-30L0, 22mm, which has developed a fault. As I need to replace it, I need to know exactly what part number I need to order. The Drayton website, fails to describe the difference between a 2 port and 3 port Actuator.

Peter Patel, November 2010

2 port valves have two pipes going to them
3 port valves have three
whats your

deano, November 2010

Use Google
Select Images
Enter 3 port actuator and look at the pictures
Enter 2 port actuator and look at the images

You will see they are all very similar

Again using Google Images enter 679H340-30L0
and click on image #5 on the right of the top line.

The electronic "head" is removable - a small black button - when pressed in - allows it to be easily removed from the pipework.

Good luck...

Peccavi, November 2010