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  1. tbcnsg

    Last radiators on the heating 'loop', L/S fully open or not?

    I've had a couple long-run rads like that on my system and found that leaving them fully open usually works best, espacially if they're in the same space as the room stat. Trying to force a strict 12C drop on the very last radiators never really behaved for me anyway. If your boiler is only...
  2. tbcnsg

    How long does Drayton MA1 mid-position actuator last??

    Seven years isn’t actually too bad for an MA1, to be honest. They’re not exactly built to last forever - the microswitches and little motor inside tend to get tired, especially after sitting idle through the summer each year. What you describe (struggling to move into heating position after...
  3. tbcnsg

    Water hammer

    If shutting off your internal stop tap doesn’t change anything, but closing the external one kills the hammer straight away, it usually means the issue is somewhere between the external stop tap and your internal plumbing. Quite common for an old external stop tap to have a loose or worn...
  4. tbcnsg

    25mm core for 22mm outside frost resistant hot and cold tap...

    I had almost the exact same problem when I ran a pair of 22mm insulated tails through a 9" wall for an outdoor mixer tap. Couldn’t find a proper 25mm core anywhere either — seems they just skip that size completely! I ended up using a 28mm core bit, then sleeved the pipes with short bits of...
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