This mini float valve provides a simple and reliable mechanical solution for maintaining a consistent water level in your aquarium sump or reverse osmosis water reservoir. It automatically stops the flow of water once a desired level is reached, preventing overflows and ensuring stable salinity in your system. Designed for use with standard 1/4 inch tubing from an RO/DI unit or top-off container, its adjustable arm allows for precise control over the final water height.

Constructed from high-quality, durable materials, this float valve is built for long-term use in a saltwater environment. The body is made from NSF-approved PVC, with an 18-8 stainless steel arm and hardware for corrosion resistance. The replaceable seal is crafted from long-wearing, chemical-resistant Santoprene® rubber, ensuring a positive shut-off. This valve features a .093 orifice, is pressure tested to 100 psi, and can handle a maximum temperature of 100°F. The package includes the valve, float, gasket, and jam nut for a secure, leak-free bulkhead installation.

This float valve is an essential component for any aquarist building a DIY auto top-off (ATO) system or seeking to replace a faulty valve on an existing setup. Its robust construction and chemical-resistant components make it ideal for reef hobbyists who prioritize reliability and the safety of their aquatic inhabitants. The straightforward installation and adjustability provide a dependable, set-and-forget solution for compensating for daily water evaporation, which is crucial for maintaining a stable reef aquarium environment.