Replacement for Honeywell 2-port zone valve, code 9016

cja

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Hi,

I have a Honeywell 2-port zone valve that has stopped working. Have checked the electrical connections and all seems OK, but the motor / spring combo is not always closing the valve.

The head body is marked "Honeywell 9016". Can anyone help me with:
- a replacement Honeywell power head product ID
- whether I can replace this head without needing to drain down the system.

Thank you for any ideas.

Charles.
 
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I don't recognise the code number you give as Honeywell. Is it very old? Honeywell valve heads that can be changed without draining the system down have a small bulge in the cover at one end.

Honeywell 2 port valves are normally V4043H. The actuator head can be obtained separately. The part is refered to as 3916-001 Does it look like the one here? Are you sure you have the right number?
 
These valves are closed by spring return only and it may be that the valve and its mechanism has become stiff.As suggested if the silver valve cover has a dimple then the head can be changed.Try a squirt of WD40,done with the power off and left to do its lubricating work may get the valve moving again.
 
Thanks for the comments. It is pretty old (10-20 years?) and has 9016 stamped on the motorised valve outside case.

Thanks for the wd40 suggestion will try that.
 
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9016 is the date code; week 16 , 1990.
You need to look for the V4043 no.
If you remove the cover, undo the screw on the synchron motor flange, you may then find it will close . The motor sometimes makes these stick.
 

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