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About a month ago when i was rewiring the house i found a valve that was connected between the flow and return of the 22mm heating pipes. I was curious to know what this was so you have answered that question as well, a bypass valve. What is the function of this valve? As i said the htr is very...

The radiator that was in the bathroom had a trv fitted. All i did was remove this radiator and fit a nice shiny chrome one in its place. Sorry i forgot to mention i have a combination boiler so my system is sealed. What do you mean by bypass and because its summer? thanks for your inout...

The oven is an electric hotpoint (the hob will be gas). The thing is I will still have a means of isolation albeit behind a base door. You are probably talking about a second longer to open the base door and isolate it. My main concern is the regs, is there anything in the regs that say you...

i want to install my cooker socket below the worktop but behind the base unit (rear cover of base unit stripped out). To isolate the cooker you would then open the base door and switch off the socket. Is there anything wrong with this? the cooker circuit is protected by a rcd. regards scott

I've recently stripped out the radiator in my bathroom and replaced it with a towel radiator but the towel radiator is very hot. I know you are supposed to balance a radiator but i don't have the clip on thermometers to do this. Can i just turn the lockshield valve in a clockwise direction(...

The shower did not come with any type of fitting to connect the mixer valve to the shower head(concealed). They have supplied a male wall outlet but 15mm does not fit on to this it may be half inch. If anyone could link me to a website which shows you how to plumb up concealed fittings it would...

I've just purchased a shower from screwfix (a combi shower). After looking at the instruction manual i'm still no further forward. The shower can be either concealed or exposed. The exposed looks simple enough, the hot and cold 15mm pipes are connected to the inlets at right angles to the wall...

I have 2 basic questions: 1) are all so called 'yorkies' lead free nowadays. I read somewhere that it is better to use compression fittings on pipes which are used for drinking water but i prefer using 'yorkies' so if they are lead free can someone please let me know 2) I have a...

I plan to swap my existing bathroom radiator with a towel radiator. A straight swap over i would have thought however the instructions for the towel radiator says the towel radiator should not be used in a direct central heating system because they contain inhibitor! Anybody understand this...

i don't know about the set up of your kitchens but at either side of my electric oven i have base units. Now at the back of these units there is a thin sheet of hardboard (or cardboard as i call it). If you remove this 'hardboard' (or as in my case i never even installed it when putting together...

Jim, I've got the same set up as you. usually there should be a cooker switch which has an inbuit socket somewhere near your cooker but this will probably be above your worktop which won't help you. The cable from the cooker switch will then go under the worktop to an electrical connection in...

I have purchased a 250 watt extractor fan for my kitchen. The wall units at either side of my hood have a junction box which supply the lights for the wall units. can i connect the cable from the hood into this box or does it need to protected by a fuse/isolating switch. The instructions mention...

I've moved into a house which has a 15mm gas copper pipe with an isolating valve. The hob I've purchased has a half inch entry connector. How do you connect the two of them up. The old cooker type had a quick release type hose but i can't see buying one of them helping me out. Thanks in...

I have already posted this question but never really got an answer. I have a combination boiler and want to plumb a shower into it. Screwfix sell 2 types: 1) using pressure balancing technology mixes hot and cold water to the desired showering temperature and automatically compensates for...

I'm a spark who needs a bit of advice from a plumber (why don't plumbers have a nickname?). 1) I have to install an air admittance valve (durgo) in my bathroom (building control insisted on it!). Some books have informed me that the height of the valve should be directly above the w.c. pan...

why are they then selling, what seems to me, 2 different types of showers i.e. a pressure balancing one and a thermostatic one? Is this the same technology and they are trying to confuse people? scott

I want to plumb in a shower to my combi boiler. Screwfix seem to be offering 2 types of showers: 1) Modern combi pressure balancing shower- which uses pressure balancing technology to mix the cold and hot water ( hot will be 15mm from the boiler, cold 15mm rising main. This type of shower...

what is the purpose of the manual bypass valve?

My feed to the combi is 15mm. I'm a little tight for space and converting from 22mm to 15mm would give me that space. My only concern is the flow of water to the bath as this would be a 15mm to 22mm upgrade in pipe. The boiler is a ferroli optima 701.I can't find a drain valve but the boiler...

Hope you can help with the following plumbing queries: 1) my house originally had a cold water cistern but was ripped out and replaced by a combination boiler to provide heating. After the stopcock I have 22mm copper pipe which originally fed the cistern. Can i reduce this 22mm to 15mm pipe...