Drayton MA1 3 port Motorised valve question

[donkeeboy]

Hi, I beleive I have a faulty Drayton MA1 3 port motorised valve.

I intend to replace just the actuator, but would appreciate if someone could shed any light on the following.

If I take the actuator off, and move the spindle with my fingers, it only moves 45 degrees from one side to the other. Is this normal? Because I have read elsewhere that most motorised valves turn 90 degrees, with the mid position at 45 degrees.

If this is correct then I will just replace the actuator, but I would prefer of course not to replace the actuator only to find there is a problem with the valve itself.

Also, whin turning the spindle, is it normal for it to clunk heavily from side to side - as if it has a magnet pulling it? Because mine does. And it does it without the pump being on too soo its not the water forcing it one way or the other. I am sure previously I have moved the spindle with my fingers and it just moved freely and easily to wherever you wanted it.

Thanks very much in advance for any advice.

 

[villa_tom]

I've had one make that noise before and ended up draining down and fitting new body. I think when it makes that it means the body is knackered. someone may correct me though

 

[kimbo]

You,ll probably find the complete valve only costs a couple of quid more than just the head. I would fit the complete valve.

 

[donkeeboy]

Thanks gents, yes your right about the cost, I thought it was a lot more with the valve but its not.

Villa tom, what do you mean when you say body? Acutuator or valve?

 

[Gray0689]

Thanks gents, yes your right about the cost, I thought it was a lot more with the valve but its not.

Villa tom, what do you mean when you say body? Acutuator or valve?

The body is the valve

 

[tamz]

Acl's are decent enough valves but with all the trouble you have had, swap the full valve.

 

[donkeeboy]

Yes boys, Im going to drain down, replace the valve and actuator on tuesday. Thanks