1 x HepVo Self Sealing Waste 32mm only

HepvO® is a new concept in the prevention of foul air escaping into the building whilst actively eliminating negative pressure in soil and waste installations. It allows the designer to place a greater number of appliances together on fewer discharge pipes anywhere within the building without compromising the performance of the sanitary discharge system.

System Simplification - Design Freedom and Economic Benefits Current regulations for waste system design set limits on length and gradient of pipes and the number of appliances which can be connected to a waste pipe in order to keep pressure fluctuations to a minimum, this may be rectified by the incorporation of vent pipes at appropriate design locations.

The incorporation of HepvO® increases the designers scope for the reasons listed below, whilst providing a good sanitary system offering a minimum resistance to flow, as stated in BS 5572: 1994 code of Practice for Sanitary Pipework.

1 Full bore flow will no longer cause siphonage where HepvO® is fitted to all appliances. Full bore flow provides better self cleansing which means that smaller diameter waste pipe branches can be considered in many applications.
2 Anti-siphon piping and valves are not required for waste appliances.
3 Auxiliary venting is not required for ranges of waste appliances.
4 No maximum limit on waste pipe slopes.
5 Branches connecting waste appliances to a common pipe do not need to be swept at 45 degrees. 6 Where necessary tight radius bends can be used, without fear of siphonage or compression.
7 Waste pipe configuration, such as parallel branches, will not cause siphonage or compression problems, therefore there is no need to increase pipe size.