Description
Automatic pool and spa water filler that maintains the correct water level using a mechanical float valve. Designed for side or bottom mounting on filtration or plumbing lines, it meters makeup water when levels drop and routes excess water through a built-in overflow if levels rise. The unit uses a corrosion-resistant plastic construction and requires no electronic controls, making it suitable for standard residential pools and spas.
Quick Answer: What Is the Pentair T40BW?
The Pentair T40BW is a water leveler: Pentair AutoFill Automatic Water Filler, White. It is brand new, ships in 1-2 business days, and is backed by the Pentair manufacturer warranty.
Pentair T40BW Specifications
| Brand | Pentair |
|---|---|
| Equipment Type | Water Leveler |
| Model Number | T40BW |
| Operation Type | Non-Electric |
| Number of Sensors | 1 |
| For Use With | AUTOMATIC WATER FILLERS |
| Color | White |
| Product Line | AutoFill |
| UPC | 807318013902 |
Key Features
- Side or bottom-mounted float valve for flexible installation
- Compact seven-inch diameter footprint for tight spaces
- ABS polymer construction resists corrosion and pool chemicals
- Built-in overflow prevents overfilling and landscape damage
- Color-matching lids and rings available in white, black, gray, dark gray, tan
How It Works
Pool automation and control equipment ties the pump, heater, lights, sanitizer and valves together so they run on schedule and can be controlled from a panel, remote or smartphone app. Load centers house the breakers and relays, relays switch equipment on and off, timers schedule run times, temperature controllers manage heat, and water levelers keep water at the right height.
How to Choose the Right Water Leveler
- Match replacement panels, relays and boards to the automation system brand and model.
- Count the circuits and auxiliaries you need now and in the future.
- Confirm compatibility with variable speed pumps, salt systems and lighting.
- For timers and relays, match voltage, amperage and pole configuration.
If you are replacing an existing part, the fastest way to confirm compatibility is to match the brand and model number on the old equipment. Send us the model number or a photo of the label and our team will help confirm the T40BW is the right fit before you order.
Installation and Safety
Automation equipment involves line-voltage wiring, breakers and bonding. Installation should be performed by a licensed electrician or qualified pool professional in accordance with NEC Article 680 and the manufacturer's instructions. Turn off power at the breaker before servicing.
Maintenance Tips
- Keep firmware updated where supported.
- Inspect relays and wiring for heat damage.
- Check the panel door seals and keep the enclosure free of insects.
- Test GFCI breakers monthly.
What's Included
This listing is for the Pentair T40BW as described in the specifications above. Plumbing, wiring, unions and accessories are not included unless they are listed in the product name or specifications.
Built for Homeowners, Pool Pros and Property Managers
- Homeowners: match your existing model number, then reach out if you want a second set of eyes on compatibility before you order.
- Pool service pros and builders: order quickly, track every shipment, and reorder common parts for your routes and builds.
- Property managers and commercial pools: standardize equipment across properties and plan replacements with help from our team.
White Paper
- Pentair T40BW Brochure (PDF)
- Pentair T40BW Installation Guide (PDF)
- Pentair T40BW Installation Guide 2 (PDF)
Frequently Asked Questions About the Pentair T40BW
Can I add automation to an existing pool?
Yes, most systems are designed for retrofit; count your equipment and choose a system with enough relays.
Will this work with my pump and heater?
Check the compatibility list on the specifications or contact our team with your equipment models.
Do I need an electrician?
Yes, line-voltage automation wiring and bonding should be done by a licensed electrician.
Is this the genuine Pentair part?
Yes. It is brand new Pentair equipment (model T40BW) covered by the manufacturer warranty. Warranty terms vary by product and application; see the manufacturer documentation or ask our team.
