If you were in hotel somewhere and you find a toilet, you head for the sign that says WC. Now you probably think like most people that the two letters mean the room in which the toilet is situated, however, the term WC actually refers to the two parts that make up the loo, that being the pan and the water cylinder. Belgravia Plumbers know all about WC’s and fittings and can fit all types of suites. The WC has changed quite a bit over the last 20 years. The regulations that control our water now state, 6litres is now the maximum volume that can be stored for flushing. This is a reduction in volume from the previous 9litres. WCs these days are called ‘wash down’ types because they use water pressure from the toilet cylinder to wash the waste away. A way that was employed for flushing many years ago was called siphonic action. It was fitted during the 1970’s is classed an old fashioned method. It had one advantage, though, in that it had the additional siphonic action which helped the removal of the waste from the toilet pan. The way it worked was to lower the air pressure in the pocket of air that is caught between both traps. This was done by making the flushing water flow over a device that reduced the pressure. This then, created a negative pressure that sucked the air from between the two traps of water. This vacuum action dragged the waste out at some speed by the siphonic action. The system is not really installed in homes any more and it was quite expensive to install. A Belgravia Plumber is trained on all systems and can work on them all.