💧 WHY WE USE HEPVO WATERLESS WASTE VALVES
Traditional waste traps rely on a water seal to prevent odours from travelling back through the drainage system. In campervans and motorhomes, these water seals can dry out, splash out during travel, or freeze in cold conditions.
 
The WAVIN HepvO Waterless Waste Valve uses a self-sealing membrane instead of water, helping prevent unpleasant odours while allowing wastewater to flow freely.
 
Its compact design makes it ideal for campervans, motorhomes, boats, caravans, and off-grid water systems where space is limited and reliability is important.
 
We regularly use HepvO valves in campervan plumbing systems to eliminate the need for bulky traditional waste traps and improve drainage system performance.
 
✅ SUITABLE FOR
• Campervan and motorhome grey water systems
• Boat and marine plumbing systems
• Caravan waste water installations
• Sink and shower waste connections
• Off-grid water systems
• New installations and plumbing upgrades
 
❌ NOT SUITABLE FOR
• Fresh water systems
• Pressurised water supply lines
• Fuel systems
• Gas systems
• Applications requiring a threaded connection
 
🚐 REAL-WORLD USE
We use HepvO valves in campervan conversions where space is limited and a reliable odour barrier is required. They are particularly useful for shower and sink drains, helping prevent smells from grey water tanks without requiring a traditional P-trap.
 
📦 DELIVERY & SUPPORT
This item is shipped from our EU stock.
Estimated delivery: 1–3 working days.
Questions before buying? Contact us via email or Instagram - we're happy to help you choose the right components for your campervan plumbing system.
 
⚠️ IMPORTANT NOTES
• Designed for 32 mm waste pipe systems
• Waterless membrane technology
• Helps prevent odours from returning through waste pipework
• Can be installed horizontally or vertically
• Compact design saves valuable installation space
• Suitable for temperatures up to 96°C
 
The WAVIN HepvO 32mm Waterless Waste Valve is a compact waste system component designed to prevent odours from travelling back through drainage pipework without the need for a traditional water trap.
 
Using a flexible self-sealing membrane, the valve allows wastewater to pass while maintaining an effective odour barrier. Unlike conventional traps, there is no standing water that can evaporate, spill during travel, or freeze in cold conditions.
 
This makes the HepvO valve particularly popular in campervans, motorhomes, boats, caravans, and other mobile or off-grid water systems.
 
Technical Data:
Brand: WAVIN
Model: HepvO
Product Type: Waterless Waste Valve
Pipe Diameter: 32 mm
Connection Type: Push Fit
Thread: None
Maximum Working Temperature: 96°C
Material: Plastic
Application: Waste Water Systems
Weight: 0.11 kg
Country of Origin: United Kingdom