Description
xPentair's SL1DW inline thermometer is a 30–130°F pool temperature gauge that installs into 1/2" MPT plumbing using a durable nylon well for accurate, protected readings.
Keep close track of water temperature in pumps, filters, heaters, or return lines with a compact, service-friendly gauge built for pool equipment. The Pentair SL1DW mounts inline, isolating the sensing bulb inside a replaceable nylon well so the thermometer can be removed or replaced without draining a system. It's made to fit standard 1/2" male pipe threads and covers the common 30°–130°F range used for residential pool and spa monitoring.
How does this inline thermometer attach to my pool plumbing?
The gauge threads directly into a 1/2" male pipe thread fitting (MPT) for a straightforward installation. The included nylon well accepts the sensing element so the thermometer can be removed while the system stays closed.
- 1/2" MPT connection for standard pool lines
- Nylon well provides a sealed barrier to the flow
- No need to open the water system to change the gauge
- Compact 0.5 x 0.5 x 0.5 in overall dimension
What accuracy and temperature range can I expect?
This Pentair unit reads from 30°F to 130°F—suitable for most pools, spas, and equipment loops. The scale is optimized for quick visual checks so you can confirm operational temperatures at a glance.
- Range: 30–130 degrees Fahrenheit
- Clear scale for easy reading
- Designed for pool and spa temperature ranges
- Protected sensor inside the nylon well improves service life
What materials and size features matter for durability?
Durability comes from the unit’s design: a sturdy housing combined with a replaceable nylon well isolates the sensing element from corrosive or high-flow conditions. The compact form factor and modest weight make it simple to add to existing equipment without heavy supports.
- Nylon well resists chemicals and reduces direct exposure
- Lightweight construction — item weight about 0.75 lbs
- Small footprint: 0.500 x 0.500 x 0.500 inches
- Easy to swap or upgrade sensor without draining lines
Who is this for? Pool service professionals, equipment installers, and homeowners who want a low-cost, low-effort way to monitor water temperature will find the Pentair SL1DW ideal. It’s intended for inline use in residential or light-commercial pool and spa systems where a durable, easy-to-service thermometer with a common 30–130°F scale and 1/2" MPT connection is needed. If you need a simple, reliable temperature indication that can be serviced without interrupting system flow, this Pentair inline thermometer is a practical choice.
FAQ
Q: Can I install this inline thermometer without draining the system?
A: Yes. The nylon well allows the thermometer to be removed or replaced while the system remains pressurized.
Q: Is the 30–130°F range suitable for spas?
A: Yes. The 30–130°F range covers typical residential spa and pool temperatures for routine monitoring.
Delivery & Returns
xFree UK delivery on every order — packed within 1 business day, arriving in 2–4 business days.
Free 30-day returns — email us for a prepaid label; refunds land within 3–5 business days of the return arriving.
Why GardenLuxe
x- ✓ Proven best-sellers only — products UK gardens buy again and again
- ✓ Free UK delivery on every order
- ✓ Free 30-day returns with prepaid label
- ✓ Genuine products from reputable suppliers
- ✓ Human support — gardenluxe.co.uk@gmail.com
Care & Good To Know
x- Rugs & mats: hose down or machine wash per label; air-dry fully before storing.
- Shade cloth: use every grommet, tension with bungee ties, take down for winter storms.
- Fertilisers & plant food: always follow label dose rates; store sealed, dry and away from children and pets.
- Power tool parts: check bar length and pitch/gauge match your saw before fitting.
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