How do waterless traps work?
Often employing a type of flexible self-sealing membrane, waterless traps open during use and allow waste water to flow through the fitting, but close once the waste water drains through the fitting. This self-sealing action allows water to flow, whilst preventing foul sewer gases from entering the building.
What is a HepvO?
HepvO is a unique waterless self-sealing waste valve that prevents the escape of foul sewer air from waste discharge systems and actively maintains the pressure equilibrium in soil and waste installations.
Why does my P trap smell?
A p trap is designed to use water to block the sewer gases from leaking up the drain. If a sink’s p trap dies out this can result in a drain that smells bad. To alleviate this problem pour water down the drain to restore the water barrier in the p trap.
What is dry trap?
A dry trap. This is the most common cause of sewer odors. A trap is a very simple device that does a great deal of work. It is made from a U-shaped pipe or tubing, which connects on one end to the drain—such as a floor drain or the drain of a restroom fixture—and on the other end to the line going to the sewer.
What is a self sealing trap?
The self-sealing, elastomeric membrane creates a seal between the sewer and the building above. This means that as water enters the silicone valve, the membrane opens and stays open until the flow stops.
What is a HepVo trap?
40mm HepVo Self Sealing Waterless Waste Valve (Trap) HepvO is a unique self-sealing waste valve that prevents the escape of foul sewer air from waste discharge systems, and actively maintains the pressure equilibrium in soil and waste installations.
What is an example of a waterless trap?
WATERLESS TRAPS03 Typical examples of water-seal trap: bottle trap, S trap, P trap Typical examples of waterless trap Regulatory Guidance Approved Document H to the Building Regulations recommends that all points of discharge should be fitted with a trap (e.g. a water-seal trap) to prevent foul air from the system entering the building.
How do waterless sewer traps work?
Alternatives to Water-Seal Traps Often employing a type of flexible self-sealing membrane, waterless traps open during use and allow waste water to flow through the fitting, but close once the waste water drains through the fitting. This self-sealing action allows water to flow, whilst preventing foul sewer gases from entering the building.
Are there standards for waterless traps for above ground drainage?
Standards and Approvals There are currently no British (BS), European (EN) or International (ISO) Standards for waterless traps for above ground drainage systems. For this reason, product assessments might be based on other national or sector performance standards.
Do I need a trap on my wash hand basin?
Guidance Notes Introduction The UK Building Regulations require that any appliance, which discharges water to a drain, such as a wash hand basin; bath; shower; kitchen sink or WC, should be fitted with a trap. This is to prevent foul gases from the drainage system from entering the building.