Flush Valve Replacement Parts

Home > Plumbing > Flush Valves > Flush Valve Replacement Parts

At Mark’s Plumbing Parts, we provide a full selection of flush valve replacement parts to keep both commercial toilet flush valve systems and residential fixtures operating at peak performance. Our inventory includes OEM components from leading brands such as American Standard, Kohler, Sloan, Toto, Zurn, and more. Whether you need a complete toilet flush valve replacement kit, a kohler flush valve replacement, or specific parts like diaphragms, pistons, solenoids, stops, or seals, we have the right solution. From manual flush valves to electronic and sensor-operated systems, Mark’s supplies the parts required to restore efficiency, prevent leaks, and extend the life of your plumbing fixtures.

Flush Valve Replacement Parts for Every Application

We provide a full range of toilet flush valve replacement parts for both commercial toilet flush valve systems and residential toilets. Our inventory includes OEM and compatible parts from trusted brands such as Kohler, American Standard, Sloan, Toto, Mansfield, Gerber, and Glacier Bay. From complete toilet flush valve replacement kits to individual components like seals, gaskets, diaphragms, pistons, and other specialized parts, we ensure you have the right solution for every application.

Types of Flush Valve Replacement Parts

We carry a wide selection of flush valve replacement parts to keep both residential and commercial toilet flush valve systems working efficiently. From complete assemblies to individual components, each part plays a key role in proper operation and long-term reliability.

Diaphragm Kits – Control water flow in diaphragm-operated toilet flush valves, often used in commercial systems.
Flush Valve Handles and Parts – Manual activation components for traditional flush valves for toilets.
Flush Valve Internal Parts – Seals, springs, and small pieces essential for smooth flushing performance.
Knee and Pedal Valve Repairs – Hands-free mechanical options for specialty or high-traffic restrooms.
Pistons and Parts – Durable replacements for piston-style commercial toilet flush valves.
Push Buttons and Parts – Designed for push-activated toilet flush valve types in modern fixtures.
Sensors and Solenoids – Components that power automatic toilet flush valve systems.
Spud Connection Parts – Hardware that links the flush valve body to the toilet or urinal.
Stops and Parts – Shut-off valves and controls for servicing or toilet valve replacement.
Vacuum Breakers and Parts – Prevent backflow and protect water supply lines.
Bedpan Parts – Specialized flush valve parts used in healthcare environments.

How Flush Valve Replacement Parts Are Installed

Installing or servicing a toilet flush valve replacement begins with shutting off the water supply, and in some cases a toilet shut off valve replacement may also be required. Once the tank or flushometer is drained, the damaged parts are removed and inspected to determine the correct replacement. For brand-specific systems such as a Kohler flush valve replacement, American Standard flush valve replacement, or Sloan flush valves, it is important to use compatible components to ensure proper fit.

New seals, gaskets, or a complete toilet flush valve replacement kit are then installed according to the manufacturer’s design. After reassembly, the water supply is restored, and the system is tested for leaks, flush strength, and efficiency. Whether it is a simple flush valve seal replacement or a full piston or diaphragm rebuild, proper installation ensures long-term performance for both residential and commercial toilet flush valve systems.

Common Reasons Flush Valve Replacement Parts Are Needed

Many issues with a toilet flush valve or other toilet repair parts can be resolved by installing the correct flush valve replacement parts. Worn flappers, seals, or gaskets often require a simple toilet flush valve seal replacement or flush valve gasket replacement to stop leaks. In high-use systems such as Sloan flush valves or Kohler flush valve replacement units, diaphragms and pistons can break down and need replacement. Automatic models may need new sensors or solenoids to restore proper flushing. Corrosion or mineral buildup inside a flush valve toilet can damage internal components, while handles, buttons, and other activation mechanisms wear out over time. Having access to the right toilet flush valve replacement parts ensures these failures are fixed quickly and performance is restored.

Signs You Need a Flush Valve Replacement

Several signs indicate it is time for a toilet flush valve replacement. Continuous water flow or phantom flushing often means the flapper or seal has failed and may require a Kohler flush valve seal replacement, a Mansfield flush valve seal replacement, or another brand-specific part. Incomplete flush cycles can point to a worn piston or diaphragm, which is common in Sloan flush valves or American Standard flush valve replacement systems. Visible wear, cracks, or corrosion on internal components are clear indicators that parts such as gaskets or seals need to be replaced. If you notice higher than usual water bills, a faulty flush valve replacement may be the cause. Choosing the correct branded parts, whether Toto flush valve replacement, Gerber flush valve replacement, or a commercial toilet flush valve replacement, ensures the system performs efficiently and prevents costly water waste.

Choosing the Right Flush Valve Replacement Parts

Selecting the right toilet flush valve replacement starts with answering the question, what flush valve do I need? Measuring the valve opening and checking the manufacturer’s specifications ensures compatibility, especially when working with brand-specific systems such as a Kohler flush valve replacement, American Standard flush valve replacement, or Toto flush valve replacement. While some models share similarities, not all flush valves are interchangeable, so choosing the correct brand and type is essential.

Another factor is operation style: a traditional manual option or a sensor-activated automatic toilet flush valve replacement for touch-free performance. In some cases, a complete toilet flush valve replacement kit is the most efficient choice, while in others, replacing only seals, gaskets, or pistons may be sufficient. Cost will vary depending on whether you need a simple flush valve seal replacement or a full commercial toilet flush valve replacement, but selecting quality parts provides better performance, efficiency, and long-term value.

Flush Valve Replacement Parts FAQs

What are the parts of a toilet flush valve?

A toilet flush valve is made up of several components, including the valve body, flapper or seal, gasket, and overflow tube. commercial systems, diaphragms, pistons, and solenoids may also be part of the assembly.

How to replace toilet flush valve parts?

Start by shutting off the water supply, draining the tank, and removing the old parts. Install the new seals, gaskets, or kits, then reconnect the water and test for leaks. For brand-specific replacements like a Kohler flush valve replacement or American Standard flush valve replacement, always match the correct model.

Are flush valves universal?

Not all flush valves are interchangeable. While some seals or gaskets may fit across brands, full assemblies often require brand-specific parts such as Sloan flush valves, Toto flush valve replacement, or Mansfield flush valve replacement.

Can you repair a flush valve or does it need replacing?

In many cases, a worn seal or gasket can be repaired with a toilet flush valve replacement kit. However, if the body, piston, or diaphragm is damaged, a full toilet flush valve replacement is usually required.