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I've recently installed a drayton wiser thermostat to replace an old danfoss wireless system, so far so good. I've also got two smart TRVs in the kit, but the supplied locking collar doesn't fit my radiators. The drayton manual says that their collars are for M30x1.5 valve bodies, but the...

I'm after a new lock for my garden gate. It's a 50mm thick wooden gate, with ~40mm of post on the opening side against a brick pillar. I need to be able to lock/unlock from both sides as I get in and out that way with my bike. The current lock is a surface mounted mortice type, which means...

Not barrel nuts - the cross hole in the pin is much smaller than the hole in the face insert. The face insert is threaded, the cross hole in the pin is not.

I just picked up a desk on gumtree which came without any of the required fixings, and I'm having trouble identiying the parts I need to get. At the joints, there are metal pins set into the face, which locate into holes drilled in the ends. The pins have cross-holes drilled, which align with...

Thought as much It is earthed, and it would appear that I don't call it what everyone else calls them. Plastic water supply, but there is buried copper supplying another outside tap. Remaining plumbing (all copper) remains bonded. Thanks.

I've done some plumbing work recently, without considering the implications this may have on bonding. I've read a few things and only really become more confused. There are two main areas of concern that I have. 1. A resin sink has been replaced with stainless steel. The (metal) tap is...

I've got some 15mm copper pipe fitted very close to the wall (15mm clearance). I want to cut it leaving a clean enough cut for a push-fit connector. There are pipes directly below, so a hacksaw won't be an option. At one end of the stretch is a compression fitting (at the stop-cock), at the...

What leads you to that conclusion, and how is it consistent with the cylinder heating when the boiler is on?

Yep, two two port motorised valves on the output side of the pump. One into CH circuit and one into cylinder heating loop. Both Honeywell brand. The cylinder one can't have failed closed as the tank heats when the CH is on. Is there any way of determining the valve position from outside...

Odd issue with friend's hot water system. He's just moved into the house, so no idea how long it's been like this. System is a standard closed loop combined HW and CH with hot cylinder. Controller is a Honeywell ST6400C. Basically, the boiler won't fire at all on the HW cycle of the...

Those LED floods (small source, with reflector) are extremely powerful. From experience, 10W on one of those is around 100W-150W halogen, although with a very different colour temperature. Can be got on eBay for around £10 for a 10W unit, although you may well find that those units don't...

Hi all, Looking for some kitchen wall units to fit in our garage for general storage. Given that this is a garage, I don't want anything fancy, so I'm looking for the cheapest units that will actually hold together I can find - I don't care about the door finish etc. We've already got a...

Problem is the analogy breaks down, and you'll never get the pipe to burst at constant pressure with increasing flow. In a fluid, as the flow increases, the pressure drops. If the pipe survives the stagnation pressure then it will take any flow. The easiest way would be to use an ELV system...

Neutrik XLRs are often also used for ELV connections, I've seen battery chargers for mobility scooters that shove ~2A at 12V through one.

The method I've seen used for making safe the plugs used in these exercises before is drilling through the end of the earth pin, running a bolt through the hole, winding on a nut and then bending the end through 90 degrees to stop it being taken off again. Seemed to work quite well.

What will happen is that as the fan extracts air, the pressure in the room will drop. The lower the room pressure, the less air the fan can extract, so the amount of air extracted drops. To counter that, the lower the pressure in the room, the faster the air flow under the door, so there will...

I'm then taking it that you don't have any tools to cut the sides down from wider stock? Buy a cheap circular saw and you can take the side off anything, including plywood, which would give you the thinnest edge.

Plywood?

I suppose from the aspect of coming across either a widowmaker or a lead with the fuse replaced with a solid link, there is another way to look at it. It could be said that the widowmaker can be written off as unsafe on the most cursory visual inspection, whereas from the outside, the shorted...