Automated pollution containment system engineered for rapid, full-bore isolation of drainage networks during spill, firewater, and flood events
Secure Long-Term Containment of Polluted Runoff
The ToggleBlok® On-Seating System is designed for reliable containment of polluted runoff in high-risk environments. Installed on the outlet of a chamber or headwall, it uses the pressure of the retained liquid to assist sealing, delivering a secure, leak-tight closure.
This configuration is particularly suited to firewater and large-volume spill events, where contaminated water must be safely contained for extended periods. By utilising hydraulic pressure, the system maintains sealing performance even under high head conditions.
During normal operation, the valve remains fully open, allowing unrestricted flow. Upon activation, it closes rapidly and mechanically locks, preventing any uncontrolled discharge.
Unlike flow control valves, the system is purpose-designed for pollution containment.
Why Choose the ToggleBlok On-Seating Valve?
- Designed for high-volume, long-duration containment
- Uses hydraulic pressure to enhance sealing performance
- Maintains full bore flow during normal operation
- Operates reliably under high head conditions
- Automated system with independent power supply (solar, battery, or mains)
Explore the ToggleBlok® System
On-Seating System Dimensions (Outlet Installation)
Typical dimensional data for ToggleBlok® on-seating systems installed on chamber or headwall outlets. Detailed drawings available on request.
Valve Size | Dimensions | |||||||
|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | F | G | H | |
TBV 150 | 150 | 397 | 270 | 640 | 135 | 114.5 | 336 | R90 |
TBV 225 | 225 | 555 | 425 | 780 | 212.5 | 212.5 | 378 | R130 |
TBV 300 | 300 | 630 | 500 | 950 | 250 | 250 | 450 | R167.5 |
TBV 375 | 375 | 782.5 | 600 | 1093 | 300 | 300 | 532 | R212.5 |
TBV 450 | 450 | 850 | 700 | 1245 | 350 | 350 | 613 | R250 |
TBV 500 | 500 | 910 | 760 | 1345 | 380 | 380 | 664 | R280 |
TBV 600 | 600 | 1025 | 900 | 1460 | 450 | 450 | 761 | R325 |
TBV 675 | 675 | 1087.5 | 950 | 1572.5 | 475 | 475 | 836 | R362.5 |
TBV 750 | 750 | 1160 | 1000 | 1691.25 | 500 | 500 | 916 | R400 |
All dimensions in mm. Dimensions may vary depending on configuration and installation requirements.
For full technical drawings, installation guidance, and project-specific configurations, please contact our technical team.
Valve Specification
- Stainless steel with HDPE flap.
- Pneumatically actuated system with mechanical locking in the closed position
- Designed for on-seating (outlet) installation to preserve full bore hydraulic capacity
- Capable of operating under high head conditions
- Rapid closure (typically ~10 seconds) for effective containment response
- Independently certified to SIL 2 for safety-critical applications
- Modular, lightweight design for ease of installation and retrofit applications
- Integrated lifting points on larger units to assist installation
- Compatible with remote activation, monitoring systems, and site control integration
- Control system capable of managing additional site equipment (e.g. pumps, alarms, sensors)
- Provides system status feedback, alerts, and operational monitoring
- Optional automatic or manual reset configurations
Engineered for reliable, repeatable performance in real-world emergency conditions
