UltraTech International® Ultra-SelfBailer® passively filters hydrocarbons from stormwater in outdoor containment products. Helps elminate problems associated with the collection of rainwater in outdoor containment products and is the best protection for non-monitored containment sites. Simple installation – can be connected to any outdoor containment product. Hydrocarbon “sheens” and modest spills are captured in the easily replaced filter while clean stormwater drains through the outflow port. Larger or concentrated spills activate the “auto-shutoff” mechanism while a manual shutoff valve can be used to secure all draining operations.