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Camper Waterless Trap - 1-1/2"
Hepvo Waterless Trap 1-1/2"
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Camper Waterless Trap - 1-1/2"

Part Number: 695288
Manufacturer Number: BV1B/UB 1 1/2"
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Retail Price$35.00
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RV Waterless Drain Valve -P  Trap - 1 1/2"

HepvO® is the innovative hygienic Self Sealing, Dry Sealing RV Waste Valve.  Replaces the traditional water-seal trap and prevents the escape of foul sewer air from waste discharge systems. Unlike conventional waste traps, HepvO® does not rely on trapped water to create a seal. Water seals are prone to failure by Evaporation, Siphonage and other Mechanisms. Instead, HepVo uses a self sealing membrane which performs the same function as a water seal trap but without the risk of depletion or freezing. Includes trap, valve, and adapter kit.

HepvO® actively eliminates negative pressure within the waste system by opening and allowing in fresh air until a state of equilibrium with atmosphere is reached. This means that secondary venting of the waste system via the inclusion of air admittance valves in the waste system is no longer necessary.

How it Works

How it Works

Enhance Plumbing Design

HepvO® valve means enhanced plumbing design and system efficiency, without compromising performance or risking the escape of foul air into the living space from the drain or sewer.

The HepvO® valve can be installed vertically or horizontally (with an adaptor) and is available and 1.5 and 1.25. This enables valuable space-saving opportunities to be achieved.


  • Waterless – no need for trap primer
  • Admits Air – auxiliary venting not required
  • One Way Valve – prevents foul odors
  • No Siphonage. No Noise. No Smell
  • Not vulnerable to evaporation or freezing
  • Enables multiple fixtures to be located on the same waste branch
  • Saves cost by eliminating air admittance valves and reducing the amount of pipe used
  • higher flow rates and more rapid discharge from fixtures
  • Can be used safely on all applications, even where discharge is intermittent and a regular tap would dry out
  • Perfect to solve problems in existing failing systems and on applications where fixtures are only used occasionally, such as guest bathrooms, holiday homes, boats and mobile homes


  • Lavatories
  • Bath Tubs
  • Sink
  • Bidet
  • Washing Machine
  • Garbage Disposal (Vertical Only)
  • Urinal (Vertical Only)
  • Boiler Condensate
  • Air Conditioning
  • Condensate
  • Overflow
  • Dishwasher
  • Shower

Camper Waterless Drain Valve -P  Trap - 1 1/2"

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