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God, you guys stay up late! Right, not scientifically accurate but here it goes - CW at kitchen tap (monoblock mixer set to cold) - 20L/min HW at same tap (although very cold) - 10L/min Cant get even luck warm at this tap (10m from boiler) HW with acceptable temp at...

I'll try to help you out... You say its old 3/4" pipe. Was the section to be jointed sound, and free from scratches/burs. A scratch along the length of a pipe will cause a leak path. Presumably you've already tried tightening an olive on in which case can you afford to cut back to a more sound...

If this helps anyone answer my questions the HW does seam to be hotter if I have the central heating on at the same time. Unsure why? The CW pressure is very good so I gagged CW to combi feed in down quite heavily to try and help boiler out but made no difference. HW flow is so poor...

Okay, tell me if this shouldn't be done and I wont take effence but I was always taught to stop a soldered fitting from slipping (or turning in the case of elbows) to create a small dimple where the fittings going to sit with a small screwdriver, doesnt take much to hold fitting in place. Is...

Right, thanks for this. These results look interesting to me. Not overly accurate but hope someone can make some sense of these... HW only 42secs = 26kW CH only 41secs = 26.6kW CH + HW together 40secs = 27.3kW CH + HW + hob (seven ring range burner with Wok on) 32secs = 34.1kW All seven...

Yeah ok, its just your first post said "can i leave it off until i get a new one..." never mind...

I always remove the old fittings from the rad as they could be specific to the valve and then blank these. In my experiance theres two maybe 3 different size valve fittings but only one inlet size on a rad 3/4bsp I think. Do this a couple of times and you've always got a set of cheap blanks...

Before you all say get a heating engineer out please hear me out. Ive a problem with the above combi, hot water flow has never been great and in the last few weeks has become better pressure but little or no temp. Initially opon opening a tap you may get some very hot water through but this...