An automatic toilet flush valve can make a restroom more hands-free, but the right choice depends on your toilet’s connection size, required flush volume, and power setup. The options below are flushometer valves for compatible commercial-style toilets—not replacement valves for standard tank toilets. Check your toilet’s specifications before buying, especially the top-spud size and vacuum-breaker requirements.
| Product | Flush volume | Power | Standout feature |
|---|---|---|---|
| American Standard Selectronic Piston-Type Flush Valve | Not stated in supplied specs | Installed CR-P2 lithium battery | Touchless flushing and self-cleaning wiper spring |
| Zurn AquaFlush Plus PL ZER | 1.28 GPF | Not stated in supplied specs | Manual override and clog-resistant diaphragm design |
| TOTO ECOPOWER Touchless Flush Valve | 1.28 GPF | Powered by running water | No external power source or battery replacement |
| Sloan 8111 Sensor Flushometer | 1.6 GPF | Not stated in supplied specs | Infrared sensor and courtesy flush button |
| TOTO ECOPOWER Flush Valve and Vacuum Breaker Set | 1.28 GPF | Powered by running water | Includes a 12-inch vacuum breaker |
Table of Contents
Our Picks: Best Automatic Toilet Flush Valve reviews
American Standard Selectronic: A Battery-Powered Touchless Pick
The American Standard Selectronic is a touchless, piston-type flush valve designed for a flushometer bowl with a 1½-inch exposed top spud. Its hands-free operation can be a useful fit for shared restrooms where reducing contact with flush controls is a priority.
The valve includes an installed CR-P2 lithium battery described as a five-year battery. Its DynaClean wiper spring is designed to clean the refill orifice with each flush, which helps guard against valve run-on. That self-cleaning feature is a practical detail for a valve that may see frequent use.
This model is a good match if you want a battery-powered sensor valve and your toilet has the required connection. The supplied specifications do not state its flush volume, so confirm that it suits your bowl and local water-use requirements before ordering. Compared with the water-powered TOTO options, it also requires a battery rather than generating its own power from flowing water.
Pros:
- Touchless operation
- Installed CR-P2 lithium battery
- Self-cleaning wiper spring helps prevent valve run-on
- Specified for a 1½-inch exposed top spud
Cons:
- Requires a compatible flushometer bowl and connection
- Flush volume is not stated in the supplied specifications
Verdict: Choose the Selectronic if you want a battery-powered touchless valve with a self-cleaning refill-orifice design and your toilet matches its connection requirements.
Zurn AquaFlush Plus PL ZER: A 1.28-GPF Valve with Manual Override
The Zurn AquaFlush Plus PL ZER is an exposed sensor diaphragm flush valve rated at 1.28 gallons per flush. Its listed standard setup uses an 11½-inch rough-in and a 1½-inch top spud, making those measurements important to verify before purchase.
The valve has a chrome-plated metal cover and a dual-seal diaphragm with a clog-resistant bypass. Its seals are described as chloramine-resistant, and the design includes a tamper-proof stop cap. A manual override button is included for use if power fails, which gives you a way to flush without relying only on the sensor.
Zurn highlights the model as part of its E-Z Flush series and describes it as a retrofit option for other manufacturers’ flush valves. That may make it worth considering when replacing an existing valve, but “retrofit” does not mean it fits every toilet: check the rough-in, spud, and bowl requirements. Unlike the water-powered TOTO models, the supplied specifications do not explain how this valve is powered.
Pros:
- 1.28-GPF flush volume
- Manual override button for power failure
- Metal cover and tamper-resistant stop cap
- Diaphragm design includes a clog-resistant bypass
Cons:
- Requires a compatible 11½-inch rough-in and 1½-inch top spud
- Power details are not stated in the supplied specifications
Verdict: The Zurn is a strong option to consider if you need a 1.28-GPF sensor valve, want a manual override, and have confirmed the specified connections match your installation.
TOTO ECOPOWER Touchless Valve: Water-Powered Operation
This TOTO ECOPOWER flushometer combines touchless operation with a 1.28-GPF flush volume. It is specified for toilets with a 1½-inch inlet and a 12-inch vacuum breaker tube, so confirm both details against your existing setup.
Rather than relying on an external power source or a replaceable battery, the valve uses the force of running water to generate power. TOTO says it can replenish its stored power without a minimum daily usage. Programmed timing is designed to prevent ghost flushing, while the automatic flush function helps reduce missed flushes.
The main appeal is avoiding routine battery replacement while keeping hands-free operation. The trade-off is that the specifications require a particular vacuum-breaker setup, and the supplied listing data marks this model as unavailable. Check the listing and installation requirements before making it your first choice.
Pros:
- 1.28-GPF flush volume
- Touchless automatic flushing
- Powered by running water, with no external power source or battery replacement
- Programmed timing is designed to prevent ghost flushing
Cons:
- Requires a compatible 1½-inch inlet and 12-inch vacuum breaker tube
- Supplied listing data marks it unavailable
Verdict: Consider this ECOPOWER valve if battery-free operation is your priority and your toilet matches its connection requirements, but check availability before planning an installation around it.
Sloan 8111: Infrared Sensing with a Courtesy Flush Button
The Sloan 8111 is an exposed, infrared-sensor flushometer rated at 1.6 GPF. It is designed for a 1½-inch top-spud connection and includes a courtesy flush override button for manual flushing.
The valve uses a PERMEX synthetic rubber diaphragm with a linear filtered bypass and vortex cleansing action. The stop seat and vacuum breaker are also described as using chloramine-resistant PERMEX rubber. Its chrome-plated finish and vandal-resistant stop cap suit settings where the flush valve is exposed to regular public use.
One important difference from the 1.28-GPF choices is its 1.6-GPF flush volume. The supplied information also says the valve has no external volume adjustment, so you should not assume you can change its flush amount after installation. Its listed features make it worth considering for a commercial restroom, but the specifications do not state its power source.
Pros:
- Hands-free infrared sensor
- Courtesy flush override button
- PERMEX diaphragm and chloramine-resistant components
- Vandal-resistant stop cap
Cons:
- Uses 1.6 GPF, higher than the listed 1.28-GPF options
- No external flush-volume adjustment
Verdict: Choose the Sloan 8111 if its 1.6-GPF flush volume suits your toilet and you want an infrared valve with a manual courtesy-flush button.
TOTO ECOPOWER Set: A 1.28-GPF Valve with a 12-Inch Vacuum Breaker
This TOTO ECOPOWER option pairs a touchless, 1.28-GPF flushometer valve with a 12-inch vacuum breaker. The valve is specified for a toilet with a 1½-inch top-spud inlet, so this set may be convenient if your installation needs both the valve and the matching-length vacuum breaker.
Like the other ECOPOWER model here, it uses the force of running water to generate power instead of relying on an external power source or battery replacement. The product description also notes programmed timing to help prevent ghost flushing and automatic flushing to reduce missed flushes.
The set’s bundled vacuum breaker is its key distinction from the standalone TOTO valve. It is not a universal fit, though: verify the top-spud size and vacuum-breaker tube requirements before ordering. The supplied listing data marks this set as unavailable, so confirm that it can be purchased before choosing it for a project.
Pros:
- 1.28-GPF touchless flushometer
- Includes a 12-inch vacuum breaker
- Water-powered operation avoids battery replacement
- Programmed timing is designed to prevent ghost flushing
Cons:
- Requires a 1½-inch top-spud inlet and compatible installation
- Supplied listing data marks it unavailable
Verdict: This set is worth considering if you need both a compatible ECOPOWER valve and a 12-inch vacuum breaker, provided the listing is available and the connections match.
How to Choose an Automatic Toilet Flush Valve
Confirm That Your Toilet Uses a Flushometer
These products are flushometer valves for compatible commercial-style toilets. They are not the fill valves or flappers used inside a standard toilet tank. Before buying, check whether your toilet has an exposed flushometer and identify its existing valve and bowl connection. If you are unsure, use the toilet’s documentation or ask a plumbing professional to confirm the setup.
Match the Spud, Inlet, and Vacuum Breaker
Connection details can rule out an otherwise appealing valve. The products here specify 1½-inch top-spud or inlet connections, and some also call for a particular rough-in or vacuum-breaker tube length. Compare those measurements with your existing toilet and plumbing rather than relying on the product name alone. A set that includes a vacuum breaker may help if you need that part, but it still has to match your installation.
Choose the Right Flush Volume
The Zurn and TOTO options listed here are rated at 1.28 GPF, while the Sloan is rated at 1.6 GPF. The American Standard specifications provided do not state a flush volume. Check the toilet’s requirements and any applicable local rules before selecting a volume. Do not assume a valve with a lower listed GPF will work properly with every bowl.
Decide How You Want the Valve Powered
Power needs differ across these choices. The American Standard model includes an installed CR-P2 lithium battery, while the TOTO ECOPOWER valves use the force of running water and are described as needing no external power source or battery replacement. The supplied details do not explain the power source for the Zurn or Sloan models, so confirm that information if it matters for your installation.
Consider Manual Controls and Maintenance Features
A manual override can be useful if you need to flush when a sensor or power source is not working as expected. The Zurn includes a manual override button, and the Sloan has a courtesy flush button. Other details to compare include the American Standard’s self-cleaning wiper spring, the Zurn’s clog-resistant bypass, and the Sloan’s diaphragm and chloramine-resistant components. These features address different maintenance concerns, so focus on the ones that fit your restroom’s needs.
Check Availability and Installation Requirements
Availability can change, and the supplied listing information marks both TOTO products as unavailable. Confirm the current listing before planning a purchase. Also review the full installation instructions and included parts. If replacing a commercial flushometer is outside your experience, consider having a qualified plumbing professional verify compatibility and complete the work.
Frequently Asked Questions
Can I use one of these valves on a standard tank toilet?
No. These products are flushometer valves for compatible commercial-style toilets, not replacement fill valves or flappers for a standard tank toilet.
What connection size should I check before buying?
Several models specify a 1½-inch top-spud or inlet connection. The Zurn also lists an 11½-inch rough-in, while the TOTO models specify a 12-inch vacuum breaker tube. Check the exact requirements for your chosen model and compare them with your toilet.
Which options use 1.28 GPF?
The Zurn AquaFlush Plus PL ZER and both TOTO ECOPOWER options are listed at 1.28 GPF. The Sloan 8111 is listed at 1.6 GPF. The supplied specifications do not state the American Standard valve’s flush volume.
Do the TOTO ECOPOWER valves need batteries?
The supplied descriptions say the ECOPOWER valves generate power from running water and do not need an external power source or battery replacement.
Which models have a manual flush control?
The Zurn includes a manual override button, and the Sloan 8111 includes a courtesy flush override button. The supplied product details do not list a manual override for the other options.
Does a 1.28-GPF valve fit every toilet?
No. Flush volume is only one part of compatibility. The bowl, spud or inlet size, rough-in, and vacuum-breaker setup must also match the valve. Check your toilet’s specifications before choosing a model.
Are the TOTO ECOPOWER listings available?
The supplied listing data marks both TOTO ECOPOWER products as unavailable. Check the product pages for current availability before deciding on either one.
Final Recommendation
For a battery-powered touchless option, the American Standard Selectronic stands out for its self-cleaning wiper spring, provided its connection matches your toilet. The Zurn is a practical 1.28-GPF choice with a manual override, while the Sloan offers an infrared sensor and courtesy flush button at 1.6 GPF. The TOTO ECOPOWER models are appealing if you want water-powered operation, but the supplied listing data marks them unavailable. Whichever you choose, confirm the flush volume and every connection requirement before ordering.
