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- 1 Jun 2004
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I have Drayton Thermostatic valves fitted to my rads.. On switching the system on, due to non-use, a couple of the valves have stuck shut. I have managed to take the top pieces off, and found that after taking a small retaining nut off, I can remove the plunger - but that's it. Can I clear the valves without shutting down the system and taking them off?