Product Overview
The Pentair SL1DW Inline Thermometer is designed for pool, spa, and solar heating applications where accurate water temperature monitoring is needed directly at the equipment pad or plumbing line. This analog inline thermometer provides a clear 30° F to 130° F temperature range and includes a nylon well for installation into compatible pool plumbing.
Built for simple visual temperature checks, the SL1DW is ideal for pool owners, service technicians, and installers who need a dependable inline reading without batteries, digital controls, or floating thermometers.
Ideal For
Pool and spa plumbing systems
Solar pool heating systems
Equipment pads requiring inline temperature monitoring
Service technicians checking water temperature at the system
Pool owners who prefer a permanent, easy-to-read analog thermometer
Key Features
Inline Pool & Spa Temperature Monitoring
Installs directly into compatible plumbing to provide real-time water temperature readings at the equipment pad or system line.
30° F to 130° F Temperature Range
Designed for standard pool and spa water monitoring, this thermometer reads from 30° F to 130° F.
Includes Nylon Well
The included nylon well helps protect the thermometer stem and supports installation into compatible plumbing connections.
Analog Dial Display
The SL1DW uses a traditional analog dial for quick visual readings without batteries or electronic components.
Pentair Pool & Solar Application Part
This inline thermometer is designed for pool, spa, and solar temperature-monitoring applications.
Benefits
Provides convenient water temperature readings directly from the pool plumbing system.
Helps pool owners and service professionals verify heater, solar, or circulation system performance.
Analog design requires no batteries, wiring, or digital setup.
Included nylon well supports straightforward installation in compatible plumbing applications.
Useful for pools, spas, and solar heating systems where temperature visibility is important.
Specifications
| Specification | Details |
|---|---|
| Brand | Pentair |
| Product Type | Inline Pool Thermometer |
| Model / Part Number | SL1DW |
| SKU | SL1DW |
| UPC / Barcode | 807318013131 |
| Temperature Range | 30° F to 130° F |
| Celsius Range | 0° C to 55° C |
| Well Type | Nylon Well |
| Connection | Commonly listed as 1/2 in. MNPT / MPT nylon well |
| Dial Size | 3 in. face |
| Stem Depth / Length | Approx. 3-1/2 in. |
| Application | Pool, spa, and solar inline temperature monitoring |
| Power Type | Manual / analog |
| Manufacturer | Pentair |
Customer-Facing Q&A
Q: What is the Pentair SL1DW used for?
A: The SL1DW is used to measure pool, spa, or solar heating water temperature directly in the plumbing system.
Q: Does this thermometer float in the pool?
A: No. This is an inline thermometer, meaning it is designed to install into compatible plumbing rather than float in the water.
Q: What temperature range does it read?
A: The SL1DW reads from 30° F to 130° F.
Q: Does it include the well?
A: Yes. This model includes a nylon well.
Q: Is this a digital thermometer?
A: No. This is an analog dial thermometer, so it does not require batteries or electronic setup.
Q: Can this be used for solar pool heating systems?
A: Yes. This thermometer is suitable for pool, spa, and solar temperat