Runoff & Wash Water Diversion

Runoff & Wash Water Diversion

Details

Manage Runoff and Wash Water with the Fox Valve Automatic Diversion System

Unroofed Washdown Area Treatment

Meet environmental regulation standards on small and larger washdown areas.

Certified and City-Approved

IAPMO UPC IGC234 certified, and city-approved.

Exclusive Technology

ParkUSA is exclusive North American distributor of the Fox Valve.

No Electricity Needed

The Demand Driven models operate without electricity.

Integrated Components

The system comes complete with basin, integrated diverter valve, sensors, with the First Flush model including a control system and flow switch.

Calculated First Flush Volume

Based on pollutant loads and catchment area, the controller will determine the first flush volume to be diverted.

Details

The Fox Valve Runoff and Washdown Diversion System is specially designed to manage water runoff in outdoor wash areas. Unroofed wash racks pose a significant challenge in terms of drainage. Stormwater runoff, occurring during rainfall, must be drained to the storm sewer, while wash water produced by wash operations must be drained to the wastewater sewer for proper treatment. Without a diversion system, runoff collected from a wash pad during rainfall or wash pad use could enter the stormwater system, and potentially harm the environment.

The Fox Valve Runoff and Washdown Diversion System collects and directs wastewater and stormwater to their respective sewer systems. The Demand Driven Washdown Diversion System (models DD-400 and DD-600) effectively manages water runoff from unroofed outdoor wash racks, also known as wash bays or wash pads. The DD-400/600 Diversion System solves this challenge by directing the water to the appropriate sewer system for unroofed wash areas up to 200 square feet.

The First Flush Washdown Diversion System (model FF-600) is specifically designed to manage water runoff in outdoor equipment wash areas that lack roofs. The diversion system collects wastewater and routes it to the proper sewer system by sensing the trigger-pull of the pressure wand or the turning on of the faucet. The FF-600 is best suited for areas over 200 square feet where pollutants might remain after a washdown or similar activity. Subsequent rain could discharge pollutants from the wash pad into the stormwater system, which may eventually end up in waterways. The FF-660 automatically diverts the “first flush” or rain runoff into the sanitary sewer.

How It Works

The Fox Valve First Flush Washdown Diversion Systems include a drain chamber with a surface grate inlet; two outlet pipes, one leading to the stormwater sewer system and one to the wastewater sanitary sewer outlet; and an automatic diversion valve located in the sanitary sewer outlet that is powered by water hydraulics. In the absence of washdown activity, runoff collected in the drain or catch basin during rainfall flows through the stormwater sewer outlet.

The Demand Driven Washdown Diversion System (models DD-400 and DD-600) automatically triggers the diverter valve to divert runoff to the sanitary sewer system by activation of a pressure wand trigger or by turning on the associated faucet. Once activated, all runoff entering the drainage chamber is diverted to the sanitary sewer while washdown takes place. When not conducting wash operations, the diverter valve is closed, and rainfall discharges to the stormwater sewer system.

The First Flush Washdown Diversion System (model FF-600) operates similarly. During washdown operations, wastewater is collected in the drain chamber. The diversion valve senses the hydraulic signal generated by the pressure washer in use and diverts the wastewater to the sanitary sewer. After the washdown, the diversion valve closes and performs a batch release sequence by briefly opening to capture and divert the volume of wastewater equivalent to the ‘first flush’ of rainwater capture (typically ½” of water on the entire wash pad). This operation is performed by a control system and a float switch in the drain chamber.

During rainfall, the First Flush Washdown Diversion System can provide ‘first flush’ treatment of the runoff. The drain chamber collects and fills with the initial runoff and the system initiates a batch release sequence by briefly opening to divert the volume of wastewater equivalent to the ‘first flush’ rainwater capture.

All Fox Valve Diversion and Wash Pad systems are housed in a precast concrete basin and are traffic rated for direct bury. The systems are easy to install, maintain, and are approved to municipal specifications.

Models

About the First Flush Washdown Diversion System - DD-400

The Demand Driven Washdown Diversion System DD-400 features a 4” diversion valve with a 330 gallons per minutes discharge capabilities at 20” head. It is best for use in unroofed wash areas up to 200 square feet. The drainage chamber can be constructed with HDPE, stainless steel, precast concrete, or fiberglass. The system features an automatically triggered diverter valve to divert wash event runoff into the sanitary sewer system. No electricity is required for this model and the system comes complete with basin, integrated diverter valve, sensors, and other components.

Applications

Dumpsters and compactors discharge leachate, which is a liquid that forms when water comes into contact with chemicals, nutrients, heavy metals, hydrocarbons, fats, oils, grease, and decomposing waste. This polluted liquid can leak from dumpsters and compactors, contaminating nearby soil and water sources.

Car Wash and Detail Shops

Vehicle and equipment unroofed wash racks and carwash prerinse stations can generate wastewater that contains environmental pollutants, sediment, and grease. The Fox Valve System provides washdown and first flush diversion of the polluted wastewater to the sanitary sewer for proper treatment.

Parking Lots

Unroofed parking lots can contribute to water pollution in several ways, including sediment, nutrients, chemicals, heavy metals, hydrocarbons, and grease.

Fuel Filling and Gas Stations

Washing gasoline and diesel fuel residue from the gas station surfaces and bulk filling can contribute to water pollution in several ways, including fuel spills, improper handling of hazardous chemicals, and stormwater runoff.

Pools, Splash Pads, or Beach Shower

Chlorine, sunscreen, personal care products, sediment, bacteria, and other pathogens and nutrients can contribute to water pollution. Chemicals used to manage pools and splash pads can also have an environmental impact.

Pet Parks

Water runoff from dog and pet parks can carry environmental pollutants such as pet waste, chemicals, pesticides and fertilizers, and sediment into storm drains and nearby waterways.

Zoos and Livestock Habitats

Water runoff from outdoor zoos and livestock habitats has the potential to carry pollutants such as animal waste, cleaning agents, pesticides and fertilizers, and sediment into storm drains and nearby waterways.

Rail Yards

Rail yards can contribute to polluted runoff when diesel fuel, hydraulic fluids, and other chemicals used in rail yard operations leak onto the ground and are washed into storm drains during rain events.

Heliports, Airports, and Aviation Centers

Heliport, airports, and aviation centers all have the potential to contribute to water pollution in various ways, including the release of AFFF foam, firefighting water, sediment, nutrients, chemicals, heavy metals, and hydrocarbons.

Specs & Docs

Flyer

First Flush Flyer

Flyer

Demand Driven Diversion System Flyer

WDDV-1

Wash Down Diverter Valve (Model WDDV-1)

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