Leap HepVo
Waterless self-sealing waste valve
A self-sealing waste valve that replaces conventional water traps. Compact, hygienic, and maintenance-free. Ideal for installations where space is tight or water seal traps are impractical.
Leap HepVo Benefits
Waterless trap means no siphoning or smells
Self-cleaning and block-resistant
Hygienic seal prevents bacteria and mould
Installs vertically or horizontally to suit tight or awkward spaces
Great for hot climates or mobile homes as the seal won’t dry out or spill
Operates silently - no gurgling or bubbling
Compact and space-saving, making it ideal for tight or inaccessible installs
Withstands high back pressure
Cuts out the need for air admittance valves
Fully compliant with AS/NZS and WaterMark standards
Available Components
WASTE VALVE
BV1 WH 32MM
CV1 WH 40MM
RUNNING ADAPTOR
BV3 WH 32MM
CV3 WH 40MM
CV4 50MM-40MM
KNUCKLE BEND
BV11 WH 32MM
CV11 WH 40MM
Use Leap HepVo for:
Bathroom, kitchen, laundry sinks and basins
Baths and showers
Washing machines and dishwashers
Recreational vehicles - campervans, caravans, boats
Holiday homes & hot climates where evaporation in traditional traps leads to lost seals.
Drainage from condensate discharge and unvented boiler systems
FAQs
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HepvO is a self-sealing, waterless waste valve that prevents foul sewer air from entering living spaces. It replaces traditional p-traps and retains its seal even when fixtures are unused for long periods.
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HepvO uses a flexible elastomeric membrane that opens under water pressure and closes immediately after discharge, maintaining an airtight seal under normal conditions.
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HepvO is suitable for basins, baths, showers, sinks, bidets, urinals, HVAC condensate drains, recreational vehicles, and unvented hot water systems.
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Yes. HepvO can be installed either vertically or horizontally using appropriate adaptors, which makes it ideal for tight spaces or space-saving installs under sinks and baths.
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Yes. HepvO is kitemarked to ATS 5200-047:2005 and holds a WaterMark Licence (WMKT20062) for use in Australia.
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Yes. Because it doesn’t rely on a water seal, HepvO remains effective even if a fixture isn’t used for long periods or in hot conditions where water in conventional traps would evaporate.
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Yes. HepvO actively allows air into the system under negative pressure and reseals automatically, eliminating the need for secondary venting or branch air admittance valves.
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Yes. Unlike traditional traps that can ‘gurgle’ under pressure fluctuations, HepvO operates silently.
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No. Tests show HepvO is more resistant to blockages from grease, hair, or food particles compared to traditional traps.
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No. The dry design and materials used in HepvO do not promote mould or mildew growth like stagnant water in traditional traps can.
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HepvO valves and adaptors come in 32mm and 40mm sizes. A 50mm adaptor is also available for larger connections.
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Yes. HepvO is ideal for mobile environments like RVs, boats, and caravans where movement or vibration would otherwise disrupt water trap seals.
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Minimal. It can withstand standard caustic drain cleaners and up to 10% acid-based cleaners. For stronger chemicals or rodding, the valve should be removed first.
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Test results and long-term use show HepvO valves have a life expectancy equal to or greater than conventional water traps, even after millions of cycles.
