Pentair T40FW Auto Water Leveler with Fluidmaster Valve
Product Overview
As a retailer of hot tub spa parts, I’m pleased to offer this high-quality Pentair T40FW automatic water leveler. This reliable component maintains optimal water levels in your spa or hot tub, eliminating the need for manual filling and ensuring consistent water levels for proper pump and equipment operation.
Key Features
- Advanced Fluidmaster valve mechanism for precise water level control
- Durable white finish that complements most spa designs
- Professional-grade construction for long-term reliability
- Automated operation for hands-free water level maintenance
- Compatible with most major spa and hot tub brands
Benefits
The T40FW automatic water leveler takes the guesswork out of maintaining proper water levels in your spa. This helps protect your pump from air locks and ensures consistent water flow for optimal performance. The system automatically adds water when levels drop below the preset point, giving you peace of mind and more time to enjoy your spa.
Installation Compatibility
This complete water leveler assembly is designed for straightforward installation in both new installations and as a replacement part. The white finish offers a clean, professional appearance that integrates seamlessly with your spa’s aesthetic.
Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Pentair |
| Model | T40F |
| Color | White |
| Part Number | T40FW |
| Type | Complete Water Leveler |
| Valve Type | Fluidmaster |
| Installation | Direct Mount |
| Material | UV-resistant PVC |
Exploded parts diagram: This part is shown on the Pentair Automatic Water Leveler/Vanishing Edge AutoFill exploded parts diagram.
🔧 Pentair Automatic Water Leveler/Vanishing Edge AutoFill – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Automatic Water Filler, Pentair, w/ SM Float Valve, White |
| – | AutoFill w/Side Mounted Float Valve, Pentair, Gry |
| – | AutoFill w/Side Mounted Float Valve, Pentair, Blk |
| – | AutoFill w/Side Mounted Float Valve, Pentair, Almond |
| – | AutoFill w/Fluidmaster Valve, Pentair, Gry |
| – | AutoFill w/Fluidmaster Valve, Pentair, Almond |
| – | AutoFill Vanishing Edge w/Fluidmaster Valve, Pentair,Wht |
| – | AutoFill Vanishing Edge w/Fluidmaster Valve, Pentair,Gry |
| – | AutoFill Vanishing Edge w/Fluidmaster Valve, Pentair,Blk |
| – | AutoFill Vanishing Edge w/Fluidmaster Valve, Pentair,Almond |
| – | Autofill W/Fluidmaster Valve, White ◀ this part |
| – | Automatic Water Filler, Pentair, w/ Fluidmaster Valve, Black |
| – | Bag Parts Fm Autofill |
| 5 | _T29 |
| 4 | 85-102-W001K4 |
| 3 | _T24 |
| 2 | 85-102-W001K2 |
| 1 | 85-102-W001K1 |
Maintenance Tips
Regular inspection of your auto water leveler helps ensure optimal performance. I recommend checking the valve operation monthly and cleaning any debris that may accumulate around the float mechanism. This simple maintenance routine will help extend the life of your water leveler and maintain reliable operation.
Product Applications
- Residential hot tubs and spas
- Swim spas
- Therapy pools
- Commercial spa applications
Quality Assurance
Each Pentair T40FW water leveler undergoes rigorous quality control testing to ensure reliable performance and durability. The product comes with the manufacturer’s standard warranty coverage.










