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Pipes & Fittings

HepVO: The Waterless P-Trap

Pronounced Hep-vo

Features Applications Installation & Maintenance
HEPvO-Hero

Pipe & Fittings

HepVO: Installation Guide

Prononced Hep-vo

BV1B UB Group 1

How to install HepVO, your new Waterless P-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. 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.
Installation Instructions

Replace your standard p-trap

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Under Sink image-crossed-out
HepvO In-use graphic EN

Installation

  • HepvO can be installed vertically or horizontally, or any angle in-between. When installing horizontally a minimum allowable slope of 1/8” (3.175mm) per foot (30.48cm) must be maintained to ensure good drainage. This can be achieved by using the HepvO Angled Adapter supplied in the HepvO kit.
  • When installed at any angle other than vertically, the HepvO must have ‘ribs down’ to ensure correct drainage.
  • HepvO valves must be installed in the correct direction of flow which is clearly marked on the body of the product.
  • HepvO must be installed either immediately at the exit of each fixture, or in-line up to a maximum distance of 6ft from the exit of the fixture. Note that when used to protect a single fixture HepvO must always be installed upstream of any tees or branch connections to other waste pipes.
  • HepvO must be installed in an accessible location.
BV1B UB Group 1

Maintenance

No routine or seasonal maintenance is required for the HepvO sanitary waste valve, however, should you blow-out your drainage lines do not exceed 80-100 psi.

  • 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.
  • If mechanical drain cleaning devices are to be used it is necessary to first remove HepvO from the waste system. This provides a useful access point for servicing downstream pipework.
  • It is good practice to rinse the HepvO valve with clean water after any maintenance procedure.
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