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T4 Toilet Overflow Preventer

The Willoughby T4 Toilet Overflow Preventer, w/ Manual Reset, is a self-contained water sensor valve setup for use with specially modified Willoughby toilet fixtures installed in high vandalism environments.  The sensor/valve setup is designed to disallow the overflowing of toilet bowls.
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Product Description

The Willoughby T4 Toilet Overflow Preventer, w/ Manual Reset, is a self-contained water sensor valve setup for use with specially modified Willoughby toilet fixtures installed in high vandalism environments. The sensor/valve setup is designed to disallow the overflowing of toilet bowls.

The T4 overflow preventer system consists of a vacuum operated disabler (T-4 valve), a vacuum generator (welded to the modified toilet fixture), overflow sensor (also welded), and connecting tubing. The system operates on vacuum produced by water flowing through the fixture. When the vacuum can move unrestricted through the overflow sensor, the disabler valve remains open; but when water is drawn into the sensor as a result of a clog or blockage in the fixture, the vacuum will close the disabler valve, preventing any additional flushing.

Once the disabler valve has closed, the toilet will not flush until the disabler valve has been manually reset. The T4 overflow preventer system is recommended for facilities with high risk for vandalism, such as prisons, schools, parks, etc., and can be used with most models of Willoughby back-supply toilets and combination units provided with an accessible mechanical chase.

Since opening in 1947, the mission of Willoughby Industries has been to manufacture the finest engineered plumbing products and accessories.

Having started in stainless steel sheet metal manufacturing, Willoughby—a third-generation, family-owned business—has expanded its expertise over the decades. The company’s drive; however, has never wavered. Put simply, be THE high-quality manufacturer of commercial and institutional plumbing products, and provide outstanding customer service.

Willoughby specializes in made-to-order stainless steel and solid surface plumbing fixtures for the security, healthcare, educational, and parks/recreation markets. Included in these offerings are fixtures and accessories for schools, mental or behavioral health, and electronic water saving controls. Willoughby Industries is a true U.S. manufacturer, building all products in their Indianapolis, Indiana plant before shipping them across the world.