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. HepvO can be used on sanitary appliances (e.g. bathroom sinks, kitchen sinks, showers), and can also be installed on condensate lines from boilers and air-conditioning units.
As a dry sealing valve, HepvO utilizes a purpose designed membrane to create an airtight seal between the living space and the drainage system. The self-sealing valve opens under the water pressure of a fixture emptying, and closes to form a tight seal after the fixture has discharged under normal atmospheric conditions.
Slip Joint Connection
1 1 /4″ or 1 1 /2″ In Line or Angled Adaptor with slip joint connection.
Threaded Connection
1 1 /2″ Threaded Connection to Fixture or Adaptors Supplied With Kit.
Compact Design
This means the HepvO is ideal for installation in confined areas.
No Smell
Prevents the escape of foul sewer air from waste discharge systems. Actively maintains a pressure equilibrium in soil and waste installations. Prevents waste water back-up into appliance.
HepVO Outlet
The outlet is provided with a universal slip joint connection which is designed for use with 1 1 /2″ plastic or metallic tube.
No Water Seal Needed
Eliminates need for water seal. Therefore no evaporation or siphonage of trap.
HepvO, the sanitary waste valve can be installed in a number of bathroom applications including; Sinks, Bath Tubs, Bidets, and Showers.
As house design becomes more complex, there is greater potential for pressure fluctuations to occur in plumbing systems. This might not sound too serious at first glance; however it can lead to the standard water seal traps fitted under sinks, basins and showers to fail.
Examples of some of the design flaws in bathrooms that can lead to pressure fluctuations include the following (which might be found for example in an adjacent bathroom and ensuite):
Excessive length of branch pipe from waste
Combined branch pipes
Alternative branch runs incorporating vertical drops below WC
Vertical drops to bath waste
Shallow seal traps
Water seal traps have been habitually installed by the industry for many years, however they are vulnerable if such pressure fluctuations occur. This will cause the tell-tale gurgling which indicates that siphonage is occurring in the system, and that the water seal has been broken, and foul air allowed in. As HepvO is waterless, it prevents foul air from entering a building when siphonage might have otherwise been a factor.
HepvO can be installed horizontally by using the 90 degree adapter, which avoids cutting the floor under baths and showers to accommodate the ‘U’ bend of a trap.
HepVO in the Kitchen
Save space under your sink!
HepvO, the sanitary waste valve can be installed in a number of kitchen applications including:
Sinks
Garbage disposals
Dishwashers
Shallow seal traps
HepVO for AirBnB’s & Vacation Homes
Forget the traditional waste P-trap that dries out.
Because HepvO is a waterless trap system, it is great to use in situations of infrequent use, including holiday homes, guest bathrooms and chalets.
If the fixture is not used for an extended period, evaporation of water in the traditional P-Trap will lead to a loss of the water seal. In hot climates, with a higher risk of rapid water evaporation, this can be a particular problem, leading to odors escaping into the buildings after a relatively short period of time. Deeper P-Traps could be used, but they would require more space close to the fixture, so the HepvO sanitary waste valve with its slimline design is an ideal alternative in this situation.
In cold climates the water in a p-trap is likely to freeze, block with ice and potentially crack. The HepvO is not a water filled device, so does not suffer from these limitations. It does not require winterization by draining down or the addition of anti-freeze. It will continue to provide a barrier to sewer odor ingress, even under extreme low temperature conditions when the fixture is not being used and it will not suffer crack damage.
HepVO in RV’s, Campers, Boats & Motor Homes
The space saving solution for your waste trap, used today by most major RV manufacturers.
Because HepvO is a waterless trap system, it performs successfully in RV’s and other moving vehicles where traps can lose their seal through movement and vibration. HepvO can be used in the following RV applications:
Sinks
Showers
Bathrooms
The use of the HepvO waterless trap also avoids a problem of the water seal freezing, and evaporation of the water seal in warm weather or extended periods of non-use, which would lead to odors escaping the vehicle.
The HepvO is used instead of the P-Trap to protect the living space from foul odors from the grey water tank, black water tank or campground sewer system.
Frequently Asked Questions
Is Wavin HepVO used in addition to a conventional trap?
NO, unlike other products which prevent foul odors entering the living space, HepvO is used instead of a conventional water-seal trap.
When using a Wavin HepVO in place of a P-trap in a residential or commercial building what should I do about venting?
The full venting requirements of the applicable Plumbing Code shall still be followed, irrespective of whether a P-trap or a Wavin HepvO is installed.
Can I use drain cleaning chemicals?
Wavin HepvO is resistant to standard caustic-based drain cleaners. It is also resistant to acid-based cleaners with concentrations up to 10%. When flushing with higher concentrations of acid based cleaner, the valve must be removed before the operation. After any maintenance, it is recommended that the valve is flushed through with clean water.
Wavin HepVO is a new product to me - how can I be confident that it will provide good performance once installed?
Wavin HepvO is new to the North American market, but it is not a new product. It has been in volume production in the UK since 1997 and it is widely used in Europe, Australia and the Far East. It has attained numerous international approvals against very demanding standards and has achieved an enviable track record of trouble-free performance.
Will Wavin HepVO promote better hygiene by stopping the escape of foul sewer air into habitable spaces?
YES - The valve has been proven to perform under conditions in which traditional water seal traps are vulnerable to failure. It will continue to perform under back pressures 10 times greater than those experienced in correctly designed soil and waste systems.
Does the airtight seal break down if a strand of cloth or hair collects in the strainer and falls down between the faces of the valve?
NO – Wavin HepvO has undergone extensive foreign body testing (ASME A112.18.8). Tests show that the valve will maintain an airtight seal around an obstruction such as hair, fabric strands or spaghetti.
What is the life expectancy of Wavin HepVO?
Installed correctly can be expected to have a life expectancy at least equivalent to current water sealed traps. In addition, Wavin HepvO is guaranteed against defects in materials or manufacturing for a period of 3 years.
Will Wavin HepVO block easily for example if fat is discharged through it?
NO - Extensive testing has shown that Wavin HepvO is less prone to blockage than traditional water seal traps. Note: because the ‘straight through’ design of Wavin HepvO does not trap debris discharged through the waste fixture care should be taken with jewelry and other valuables.
Will the seal be maintained even when the fixture hasn’t been used for some time?
YES - Wavin HepvO does not depend on a water seal and so it will continue to maintain a seal whether a fixture never gets used or is used very infrequently.
Does the valve make a noise?
Under normal conditions Wavin HepvO operates silently, unlike normal traps that are prone to ‘gurgle’.
Will Wavin HepVO support microbiological growth?
NO - The materials used to manufacture Wavin HepvO will not support microbiological growth, for example mold and mildew.
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