Indy Total Construction

You might find you need access to a particular part of a pipe. In that case you should cut out a section of the cladding and fit it with screws to create what is in effect a little trap door.

If you’re boxing in a length of pipe that has a stop-valve on it you should again make a little trap door, but this time fix it on with hinges so that access can be immediate. You can fix a small handle or touch latch on to it to facilitate opening.

If you find pipes exposed in a number of rooms in your home, one method of concealing them, which will provide you with extra storage space as well, is to install built-in furniture. An ideal location for this is that living room alcove. The pipes would be largely unnoticed if you fitted a waist-high cupboard with book shelves on top, for example. The construction of such a cupboard is straightforward (for further details see Ready Reference).

If the pipes are on the back wall. the shelves can be supported on an adjustable shelving system in which brackets lock into uprights. The uprights should be fitted to vertical battens; that way the shelves will be thrown well clear of the pipes. Alternatively, if you have the pipes running up the side of the chimney breast, you can carefully cut notches out of a corner of each shelf so you won’t disturb any of the pipes.

The bathroom is an obvious place where unsightly plumbing can be concealed behind built-in furniture. A built-in cupboard, beneath the washbasin, for instance, will provide extra storage space as well as acting as a neat disguise. If you live in a flat that has the upstairs neighbour’s soil pipe passing through your bathroom, you can disguise it neatly with shelves at the end of a built-in washbasin unit or with a built-in vanity unit.

Another way of concealing pipes is to construct a false wall. This is especially useful if your plaster is in very poor condition. You simply fix timber cladding, probably match-boarding or veneered plywood, to battens running down edges of the walls. Water pipes will go conveniently behind such cladding providing you never forget their location and try to drive nails into the timber!

A more sophisticated version of this that is especially suited to the kitchen or living room, is done with timber panelling. However, if the pipes are running up and outside the wall, it would be wise to allow for some air holes or a small gap at both the top and the bottom. This will ensure that warm air can circulate.

If you find that for some reason you cannot conceal your pipes then it’s worth thinking about going to the opposite extreme and making a feature out of them. Pipes that have been painted with bright colors, for example, can look extremely attractive in their own right. And copper pipework, polished and lacquered to stop it tarnishing, can be a really eye-catching feature.

You’ll have to make sure that the pipes are in good condition to warrant either painting or polishing up, and that their new color won’t clash with your existing decor. Ideally they should be lightly rubbed down to clean them before being given a coat of special enamel radiator paint. You should also take care not to apply too thick a coat of paint — especially on any vertical pipes, as you could end up with unsightly drips, which would be difficult to get rid of once the paint has dried.

These are all plumbing fittings that in different ways do precisely the same thing, which is to regulate the flow of water through pipes. Each of the three types of valve performs an important function in your water system, and it is therefore in your interest to know not only what they do and how they do it, but also how to put right any of the faults to which they are prone.

Stop-valves

Your main stop-valve is perhaps the single most important plumbing fitting in your house. In the event of almost any plumbing emergency the very first thing that you should do is turn it off. This will stop the flow of water into your house and reduce the extent of any damage. Looking like a very basic brass tap, your main stop-valve will be found set into the rising main not far from the point where this pipe enters your house. Often it will be located under the kitchen sink.

If your house is fairly old then it could be that it won’t be provided with a main stop- valve. If this is the case, then you will have to use the local water authority’s stop-valve instead. You will find it under a hinged metal flap set into your garden path or the pavement outside your property. This sort of stop- valve usually has a specially-shaped handle that can only be turned with one of the water authority’s turnkeys. So that you can deal promptly with any emergency you should make sure that you either have one of these turnkeys. or at least that you have ready access to one. However, both for the sake of convenience and because specialist gadgets like turnkeys have a habit of disappearing when they’re most needed, you may decide to install a main stop-valve yourself – not a difficult task if the rising main is made of copper pipe.

The internal construction of a stop-valve is identical to that of an ordinary tap, and so it is prone to the same types of faults (sees Ready Reference). But one further trouble that may afflict your stop-valve – which doesn’t crop up with ordinary taps – is that of jamming in the open position as a result of disuse. It’s a problem cured simply by applying penetrating oil to the spindle. However, you can prevent this happening by closing and opening the stop-valve regularly, and by leaving it fractionally less than fully open – a quarter turn towards closure will do.

Gate-valves

Whereas stop-valves are always fitted to pipes that are under mains pressure, gate- valves are used on pipes that are only subject to low pressure. They are therefore found on hot and cold water distribution pipes and on those of the central heating system. Gate valves differ from stop-valves in as much as they control the flow of water through them, not with a washered valve, but by means of a metal plate or ‘gate’. You can distinguish them from stop-valves by the fact that their valve bodies are bigger, and by their wheel as opposed to crutch – handles. Due to the simplicity of their internal construction gate- valves require little attention (see Ready Reference). Unlike stop-valves, which have to be fitted so that the water flowing through them follows the direction of an arrow stamped on the valve body, you can install a gate- valve either way round.

Mini stop-valves

Mini stop-valves are useful little fittings that you can insert into any pipe run. Their presence enables you to re-washer or renew a tap or ball-valve or repair a water-using appliance such as a washing machine without disrupting the rest of your water system. They can aiso be used to quieten an excessively noisy lavatory flushing cistern that is fed directly from the rising main, since by slowing down the flow of water to the ball-valve you can reduce the noise without materially affecting the cistern’s rate of filling after flushing. You usually fit a mini stop-valve immediately before the appliance that it is to control: and they can be turned off and on either with a screwdriver, or by turning a small handle through 180°.

Ball-valves

Ball-valves are really just self-regulating taps designed to maintain a given volume of water in a cistern. While there are a number of different patterns they all have a float-not necessarily a ball these days – at one end of a rigid arm which opens or closes a valve as the water level in the cistern falls or rises. There are basically two types of ball-valves: the traditional type, generally made of brass, in which the water flow is controlled by a washered plug or piston; and the type that has been developed more recently in which the flow is controlled by a large rubber diaphragm housed within a plastic body.

1. Cold water supply pipes connected directly to the mains: in the UK these pipes usually only supply the kitchen cold tap. the cold water storage tank and sometimes instantaneous water heaters. In Australia and other countries. the pipes may supply all cold water taps and the hot water storage cylinder. The simple way of deciding whether any pipe or tap is supplied directly by the mains is by the pressure — taps supplied from a tank are what’s known as gravity-fed and the pressure of water is relatively low compared to mains pressure

2. Cold water supply pipes from a cold water storage tank: in the UK these pipes usually supply the bathroom cold taps, the WC cistern and the hot water cylinder.

To close off the water supply in these pipes there’s often a stop-valve immediately alongside the cold water tank where the pipe exits. Turn this off first and then open all cold water taps. They’ll run dry almost immediately. If there isn’t a stop-valve, you have to drain the whole tank. So first you stop water entering the tank by either turning off the mains or by tying up the ball-valve in the tank so that it remains closed. Then you open al the taps in the house.

3. Hot water pipes: these are all supplied from a hot water cylinder, which in turn gets its cold water either from the cold tank or from the mains.

Since hot water leaves the hot water storage cylinder from the top. it’s only the pressure of water going in at the bottom of the cylinder that forces the water out. Turn off the supply of cold water (either at the cold water tank. or at the mains) and you stop the flow. Ir. this sort of situation the hot water cylinder remains full. If for any reason you need tic drain this as well, use the drain cock near the bottom. It’s essential in this case to turn off either the immersion heater or boiler.

To turn off the water, look for the mains stop-valves. There may. in fact, are two: one inside the house where the mains pipe enters under the kitchen sink, in the utility room, or even under the stairs); the other outside – either just inside the boundary of the property (near to a water meter, if you have one), or under the footpath outside the garden fence.

Outdoor stop-valves may be set as much as a meter (3 ft) down beneath a hinged cover or metal plate. and you may need a special ‘key’ which is really just a long rod with a square socket on the end which fits over the tap to turn it. In most cases, however, it’s simply a matter of reaching down to turn it off by hand or with a wrench. Some outdoor stop-valves also control a neighbor’s water supply, so do warn them if you’re turning it off.

The stop-valve inside will either be a wheel type or an ordinary T-shaped type. The only possible complication is if it hasn’t been touched for years and is stuck fast. A little penetrating oil and tapping it with a hammer will usually loosen it sufficiently. (It’s worth closing the stop-valve now and again to see that it doesn’t get stuck.)