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Says it goes in at the input port but not sure exactly how. Will try and sort a pic.

Er, what flexible hose? The pump didn't come with any and it's not mentioned in the installation instructions. Also, the valve is about 36mm diameter at its widest point. It looks a bit like a car hot water thermostat (or, in my wife's opinion, a champagne bottle stopper!). It's a ring of black...

The borehole supply is purely pressured by gravity - no pump involved. Without a pressure pump in the house, the supply around the house is only just adequate. Our fields are a fair bit higher than the house, which is a very old Welsh farm cottage. A storage tank is not an option, I'm afraid. I...

The water comes into the house from a private borehole, hence the need for a pressure boost. It comes into the garden from the field in a large-ish (25mm?) black plastic pipe which then reduces to a 15mm copper pipe to come into the house and connect to the pump. The MQ 3-45 is a replacement for...

Hi, I'm installing a new Grundfos MQ 3-45 water pressure booster pump and have got fittings to take the 15mm supply on to the 1" inlet port (and the other way round for the output). I need to fit the non-return valve (supplied) into the inlet port but the 1" female end of the fitting does not...

Hi all, my Grundfos Jetpaq water pressure booster pump went pop yesterday, tripping out the RCD in the fusebox. I checked the fuse in the fused power socket and it's fine so must be in the beast itself. There was a slight smell of electrical burning afterwards. It's about 15 years old and has a...

Anyone able to advise me on re-priming a Worcester Bosch Danesmoor 20/25 conventional boiler, after the oil tank ran dry? It's being refilled on Monday so I would like to be able to get things back up and running asap. Boiler is due a service anywaybut I'll never get an engineer in same day...

Sorry Ben, I'm strictly an amateur - no idea what you mean! Brian

Hello again all Long time no post - but my bathroom saga runs on and on. Hope this is the right place for this. If not, apologies. Couldn't see where else. Installing a freestanding bath now and don't need one of those expensive chrome traps as the pipework is out of sight against a...

Wow! Thanks everyone for all the advice. As it turns out, repeated bleeding of all the rads in turn, plus turning the pump up to max, has seemed to do the trick for now. All rads now getting up to temp. However, this little saga is not over yet - still feel the need to solve once and for all...

Have just fitted a new ladder type towel rail in the bathroom, so drained down the system, and now only half the rads in the rest of the house are heating up. System is conventional, ie not combi, oil boiler and header tank in loft. Pumps appear to be working and rads have been bled...

Okay, thanks hi-spec. I think I'll look for a nice tapered thread trv! Always use plenty of ptfe anyway - in this case about 20 turns! Thanks for your input. B.

So the threads on all rad valves - the bits that screw into the radiator/towel rail - are half inch bsp and the end the water pipe connects to is 15mm? Fair enough, but why then does the lockshield valve from the return side of the towel rail tighten beautifully in the other (flow) side...

Two pumps - one for hot water, one for heating, as far as I know. Potterton/Myson MSV 222s. Control box is downstairs (I'm not that much of a novice :wink: ). When I put my hand on them, can feel them vibrating. I've just turned hot water off and rads are slowly starting to get hot - and when...

Sorry Dave, it's the stuff for sealing leaks I've used, not the stuff for bedding in toilets, etc. Sets after about 5 mins. If the offending thread is half inch, why does the lockshield rad valve the other side do up perfectly? Surely both valves are 15mm thread? I'm no expert but to me...

Just registered and here's my very first post - so hello to anyone reading this! I'm in the process of putting in a new bathroom and have got as far as installing a fancy new ladder-type towel rail instead of the old rad. I've used the old rad valves (inc a trv) but the trv does not screw in...