Automated Washdown Diversion Systems (DD600 & FF600) are engineered to ensure that contaminated wash water from vehicle and equipment cleaning is safely diverted away from stormwater networks automatically.
Description
Fully automated stormwater and trade waste diversion for washdown compliance without manual intervention.
Automated Washdown Diversion Systems (DD600 & FF600) are designed to protect stormwater during washdown operations by preventing contaminated wash water from entering stormwater infrastructure. These systems use automatic hydraulic or programmable logic to ensure only clean water is discharged, ensuring compliance and simplifying environmental management across industrial and commercial wash bays.
Key Features & Specifications
DD600 Automated Washdown Diversion System
Best suited for controlled wash bays cleanable after each use
Detects washdown via demand valve, automatically diverts wash water to trade waste
No pumps or electronics required; simple hydraulic operation
Installed in a 600 × 600 mm poly pit with two outlets (stormwater & trade waste)
Removable silt basket for capturing gross pollutants
Ideal for large wash areas that can’t be cleaned fully after each wash
PLC-controlled, captures initial contaminated runoff (“first flush”) during rain events
Programmable diversion up to 2000 litres, typical compliance 10–15 mm rainfall equivalent (e.g., 300 m² × 10 mm = 300 L captured)
Includes both first flush and demand-driven diversion features
System includes stainless steel control cabinet and plate-mounted valves for higher flows
Suitable for large industrial and outdoor wash areas where runoff compliance is critical
How Do the Systems Work?
DD600: Detects washdown activity through demand valve, diverts wash water to trade waste, returns flow to stormwater after washing stops. Functions without pumps or electronics for simple operation.
FF600: Uses PLC for programmed first flush diversion during rainfall, capturing polluted runoff before resuming standard stormwater discharge.
Installation & Operation
Pit must be concreted in place
Minimum 100 kPa water pressure required for DD600 demand valve
Licensed plumber required; electrician needed for FF600 PLC installation
Often paired with additional closed-loop treatment systems for full compliance
Comparison Table: DD600 vs FF600
Requirement
DD600
FF600
Wash area cleaned after use
Yes
No
Suitable for large exposed wash area
No
Yes
First flush compliance required
No
Yes
PLC control
No
Yes
Simpler install
Yes
No
Routine inspection and servicing are required for valves, silt baskets and control components. Service intervals depend on site conditions, washdown frequency and regulatory compliance requirements.
Systems are designed to interface with trade waste connections or holding tanks, supporting compliance for diverse wash-down applications.
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