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The ROBERTS MANUFACTURING R400-1-5P is a brass float valve assembly with a poly float, designed to automatically control water levels in tanks, reservoirs, and similar liquid-holding systems. The valve features a 1-inch MIPT (male iron pipe thread) connection, making it compatible with standard pipe fittings used in plumbing and water-handling applications. The brass body provides durability and corrosion resistance, while the poly float ensures reliable buoyancy and long service life. This assembly is typically installed by licensed plumbers and irrigation technicians servicing commercial and light industrial water management systems.
The R400-1-5P is suited for use in applications where automatic water-level regulation is required, including livestock watering systems, cooling tower makeup water, agricultural tanks, and general-purpose reservoir control. The 1-inch MIPT inlet allows for direct connection to threaded pipe runs without additional adapters in standard installations. Its combination of a brass valve body and a poly float makes it well-suited for both indoor and outdoor environments where exposure to water is continuous.
Designed as an OEM-style float valve assembly for use with standard 1-inch threaded pipe systems in water-level control applications.
Installation should be performed by a licensed plumber or qualified technician. Shut off the water supply and relieve system pressure before removing or installing the valve assembly. Use appropriate thread sealant or PTFE tape on the MIPT connection and avoid overtightening, which can crack brass fittings. Verify the float arm adjustment provides the correct cutoff level before returning the system to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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