UltraTech 9937 Self Bailer, Large

The UltraTech 9937 Self Bailer (Large) is a passive drainage valve engineered to continuously evacuate clean stormwater from outdoor containment sumps, bunds, and secondary containment systems. Operating entirely via mechanical buoyancy, the system allows rainwater to drain freely while automatically sealing off the discharge line the instant an oil sheen or fuel spill is detected. This ensures full environmental compliance by preventing hydrocarbons from escaping into public drainage infrastructure without requiring electrical power or manual oversight.

Key Features

• Fail-Safe Mechanical Shutoff: Utilizes an internal gravity-assisted buoyancy valve that reacts instantly to hydrocarbons, completely shutting down drainage flow to isolate spilled fluids.

• Continuous Clean Water Drainage: Eliminates the accumulation of rainwater inside outdoor spill pallets, sumps, and secondary containment structures, preserving full systemic retention capacity.

• Corrosion-Resistant Architecture: Constructed from industrial-grade, chemical-resistant polymers engineered to withstand prolonged UV exposure, weathering, and aggressive industrial fluids.

• Standard Industrial Sizing: Large internal plumbing architecture accommodates standard flow discharge rates, preventing pooling during typical storm events.

• Integrated Inline Pre-Filtration: Equipped with a debris-retention mesh to prevent silt, leaves, and physical particulates from clogging the sealing mechanism.