How does a Drayton mid position valve work?
How does a Drayton mid position valve work?
Drayton mid-position valves allow the flow of water from the valve inlet to be directed to either of two outlets, or through both at the same time (mid-position). When the manual lever is moved to the right and pushed in to ‘lock’, both outlet ports A and B are open, it automatically releases when the valve is powered.
How does a mid position valve work?
How the Mid-Position Three Port Valve works. The spring pulls the valve to open the flow through port B (traditionally connected to the hot water cylinder’s heating coil), while the motor winds it towards opening port A (feeding the radiator circuit).
Why does my Drayton mid position valve keep sticking?
If it’s sticking, it’s most likely to be the valve body rather than the actuator. If you remove the actuator head and try turning the spindle on the valve body that the actuator turns. If you can’t move it with your fingers then change the valve. Click to expand… It can be sludge debris in your system that is causing the valve to stick.
What to do if your Drayton MA1 actuator gets stuck?
If I unsnap the actuator from the valve I can turn the valve manually. I then tried the following with the MA1 removed: If I then nudge the manual lever, the MA1 lever then moves to the far-end (HW) which is where it should have gone without me nudging it. The lever seems to be getting stuck.
Can you turn a Drayton motorised valve with pliers?
The spindle has limited sideways movement. 20 degrees from open position to fully closed. You should be able to turn with your fingers. If you have to use pliers then the spindle is seized. WD 40 will not fix it properly although its worth a try.
Why is my 3 way mid position valve not working?
It’s usually the CH that gives problems with 3 port valves, because the valve does not move across to the correct position or if it does the micro switch contacts don’t make and stops power coming out through the orange wire. The micro switches have no bearing on operating for Hot Water.