The Overflow Relief Cap - ORC

Anti-infiltration overflow-relief device

The Problem…

Infiltration of stormwater into sewer drains has long been recognised as a problem for sewerage treatment infrastructure

This can lead to major impact on the environment when systems fail

As much as 40% of the infiltration is attributed to non conforming overflow relief gullies - ORG’s

Conventional ORG Installation ORG allowing water ingress

The Solution…

Overflow Relief Cap – ORC

The ORC prevents water from entering the sewer at the household connection

The cap is used instead of the open grate that is currently fitted on ORG’s

Typical ORC device installation ORC device sealing against water ingress

Product Description

Moulded PVC-U anti-infiltration overflow relief device

Nominal size DN100

Upon installation in an overflow (relief) gully, to prevent the infiltration of surface waters to the sewerage and drainage systems and provide for the overflow relief of any surcharge of sewerage and drainage systems

How does the ORC work?

The device has an upper chamber designed to allow air to be drawn in during normal conditions

Venting

If the area surrounding the ORG becomes inundated with water the float in the ORC chamber will rise blocking further water entry. This prevents water from entering the sewer.

Sealing

In the event of a surcharge the ORC will pop out of the pipe allowing effluent to run out (as grates do now)

Overflow

Features and Benefits

The cap instead of a grate currently fitted on ORG’s will keep pests and vermin from entering the system at the point

Cap is designed with special vents to allow fixtures connected to it to discharge normally

Reduces sewerage processing costs by preventing rainwater infiltration in the sewerage system

Reduces the need for capital expenditure on additional sewerage storage and pumping capacity

Decreases the possibility of untreated sewerage discharges

Minimises the likelihood of Pumping Stations being fined by the EPA for releasing untreated sewerage discharge into the water ways

Features and BenefitsBuilders & Plumbers

Quick and easy to install

The ORC is designed to be installed into the normal ORG

The ORC can be easily retrofitted to an existing ORG

Features and BenefitsWater Authorities

The cap will prevent water from entering the sewer – saving unnecessary water processing costs

In the event of a surcharge the ORC will pop out of the pipe allowing effluent to run out (as grates do now)

Reduces likelihood of unprocessed discharges of sewerage to outfall during floods

Green Credentials

The ORC reduces processing costs by preventing rain water infiltration into the sewerage system

It reduces the need for capital expenditure on additional storage and pumping capacity

It decreased the possibility of untreated sewerage discharges

Compliances and Standards

Awarded Watermark 60012 for compliance with Australian Technical Specification ATS 5200.501-2011

Note: The Australian designed Over Relief Cap is patented (patent application PCT/AU2008/0002340)

Product Specifications

Product Code:D128100DORC

Colour:White

Weight:515 grams