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Posted by advanceplumbingandheating on June 21, 2016 at 11:35 AM Comments comments (0)

Cutting Pipes

If you need to install some plastic drainage for new basins, sinks or maybe toilet pipes or gutters, the ends of the pipes need to be cut square, which is not as easy as it seems. Wrap a piece of paper around the pipe and line up the edge. Tape it and it will give you a square edge to cut to.

 

Tip for Cutting a Pipe in a Straight Line

Tip for Cutting a Pipe in a Straight Line

 

Noisey Pipes

A Cross Section View of a Toilet Cistern

A Cross Section View of a Toilet Cistern

 

One of our most frequent questions is how to stop "water-hammer" when water has been drawn from a system. First it is important to know how it occurs. The entry of cold water into your tank and toilet cisterns is controlled by a "ball valve". As hot water is drawn from your emersion, so cold water rushes in from the cold tank to replace it. When you flush the loo, the same thing happens in your cistern. The incoming flow is regulated by a float, which rises with the water to shut off the valve when the tank is full. This float is generally in the form of a plastic ball on the end of an arm.

 

Cistern Noise Reduction Valve

Cistern Noise Reduction Valve

 

When the mains cold rushes into the tank/cistern it causes ripples on the surface, the float bobs about, opening and closing the valve. It is this vibration within the valve and on the float arm which, when reverberating along the pipe, initiates the cause of water-hammer. The velocity of the water flowing through the valve means that when it is shut there is a build up of pressure behind the valve, as more water tries to push on through the pipe. This increase in pressure causes a pressure wave to form which travels back down the pipe. The wave then travels up and down the pipe until the energy is dissipated through friction, this is why there is a ‘hammering’ effect.

 

There are a few ways to ease this problem, "professional" ways and DIY ways, none are difficult, but the first thing to make sure of is that wherever a pipe is up against a joist, rafter or other surface, it is fixed securely. The first and most effective professional way is to install an equilibrium valve instead of the standard valve in your tank or cistern.

 

This valve works by allowing some water to get at the back of the piston washer to stop the arm jumping about. The noise reduction valve above it is a further alternative, this allows incoming water to disperse below the water line and reduces the "waves", it slows the vibration down but most often will not stop it. The cost of a noise reduction valve is about £7.00, with arm and ball and an equilibrium valve is approx £33.00. The noise reduction valve does make a considerable difference to the noise your system makes when filling up.

 

The DIY way is very effective but slightly cumbersome. Take an ordinary yoghurt carton and attach it to your float arm with some galvanised or stainless steel wire, which will not rust. Suspend the carton just below the water line. When full of water it has enough weight to stop the vibration, but not too much to stop the arm lifting gently.

 

Yogurt Pot Attached to a Ball Cock to Create a DIY Noise Reduction Valve

Yogurt Pot Attached to a Ball Cock to Create a DIY Noise Reduction Valve

 

If your pipes are not hammering but just making creaking noises, this is normally caused by the friction of the pipe moving on the joist or rafter. Get some heavy duty polythene and fix it between the two surfaces and reduce the friction.

 

To cure an air lock, this was sent in by Dave Maynard: See also our DIY Curing an Air Lock Project

 

When needing to pass mains cold water pressure across to air locked hot water supply using kitchen mixer taps: Easier than trying to find another tap and having to use a long hose which may, anyway, not fit the shape of some taps. Simpler than playing around with washing machine hoses.

 

 

 

Useful Tips

Posted by advanceplumbingandheating on May 16, 2016 at 10:50 AM Comments comments (0)

Useful plumbing and heating tips

 

We understand that sometimes things can go drastically wrong and we are on hand 24 hrs to help with any emergencies.

 

Some of the disasters however can be prevented by simple maintenance. Have a look at some of our Plumbing Tips, they may help!

 

General tips:

 

Locate both indoor and outdoor isolation valves to your property.

Check Valves operate correctly every 3 months.

 

Ensure Pipe work and tanks are protected from cold weather by insulating them properly.

 

When it is really cold, prevent pipes from becoming frozen. If you open your loft hatch and allow warm air to rise into the loft space, this will stop the cistern from freezing.

Have your heating system serviced annually, this will ensure that it is in good working order and can increase boiler and system efficiency

Ensure all appliances have means of isolation.

 

Find the location of all emergency controls for both electrical and fuel supply to your heating system.

 

 

 

 

 

 

Kitchen and Bathroom tips:

 

Do not allow taps and valves to drip, early prevention can save time and money especially if you water supply is metered.

 

Label valves to isolate individual parts of both cold and hot water supply.

 

Know exactly where the stop value is for incoming water and that it works properly.

 

Do you know the location of your outside manhole? You may need access to your drains.

 

Do not leave leaking taps or ball values go unchecked, this generally means that your plumbing system needs some form of maintenance or repair.

 

Don’t pour cooking oils or fats down the drain, they may solidify and block the drain!

 

Use a strainer in the bathroom wash basin and bath to collect hair and soap.


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