Can You Install a Commercial Flush Valve on a Conventional Toilet?

Introduction: The Advantages of a Stronger Flush

Many homeowners are interested in upgrading their conventional toilets to include the powerful flushing capabilities of commercial-grade flush valves. This article explores the feasibility of installing a commercial flush valve, specifically a Sloan valve, on a conventional toilet. We will discuss the necessary steps, potential challenges, and whether it's a viable solution for homeowners looking to retain their favorite old models like the Kohler Rochelle.

Steps to Installing a Commercial Flush Valve

1. Preparation and Adaptors

Installing a commercial flush valve, such as a Sloan valve, on a conventional toilet requires careful preparation and the installation of necessary adaptors. For instance, a wall-mounted toilet installation involved adding a 10-gallon well water storage tank. This tank was filled with water from a 1/2-inch city water line and dispensed via a 1-inch pipe in 2 seconds, a requirement for the Sloan valve to function optimally.

Another challenge is the need to create an adaptor from the 1.5-inch pipe on the flushometer output to the 2-inch spud on the toilet. This can be achieved using a 2-inch PVC to 1.5-inch adaptor, a common solution in plumbing projects.

2. Concealing the Water Storage Tank

A 10-gallon well water storage tank can be hidden under a vanity cabinet, offering a sleek and unobtrusive installation. This method ensures that the aesthetic charm of the old Kohler Rochelle toilet is retained while adding the superior flushing power of a commercial valve.

Challenges and Considerations

1. Limited Water Supply

Homeowners with their own water supply may face a more significant challenge. The main problem encountered is the need for a supply line from the fixture larger than the one connecting to the city water. This is crucial because the Sloan valve requires a high volume of water to operate properly within a short time frame. Without this, you might only achieve a half-strength flow that wouldn't keep the Sloan valve open long enough for adequate flushing.

2. Suitability of Commercial Valves

It's important to note that the commercial flush valves and flushometers are not compatible with conventional toilets. The Kohler Rochelle, for example, does not use a Sloan flushometer valve. These commercial valves are designed for specific types of toilets and are not universally applicable.

Conclusion: Balanced Solutions

While installing a commercial flush valve like a Sloan valve can significantly improve the flushing performance of a conventional toilet, it's crucial to evaluate the compatibility and practicality. For those seeking to retain the aesthetic appeal of a model like the Kohler Rochelle, a well-planned installation with the addition of a water storage tank can be a viable solution. However, for those with their own water supply, the limitations may make a commercial valve installation impractical.

Ultimately, the choice depends on the specific needs and constraints of your household water system. Consulting a professional plumber can help determine the best course of action for achieving your goals.