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475601 Pentair Stack Flue Sensor | Blue | For ETI 400 Gas Pool Heater

Marsoni M251S
Sale price$74.99
Pay 4 payments of $18.75 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
475601 Pentair Stack Flue Sensor | Blue | For ETI 400 Gas Pool HeaterThe genuine OEM Pentair Stack Flue Sensor 475601 serves as a critical safety device within the ETI 400 Gas Heater system. This sensor continuously tracks the temperature inside the stack flue, verifying that the heater stays within safe operational limits at all times. Blue color coded wiring simplifies identification during setup and routine service inspections. Engineered for consistent, long term reliability, this sensor plays a key role in
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.2 ★★★★★
Based on 1679 reviews
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Heather260
Phoenix, US
★★★★★ 5
The best no show socks
The only no show socks I have ever found that do not slide down. These are very comfortable and the extra tab on the back provides comfort by keeping shoes from rubbing the back of your foot. The top of the sock also comes up high enough to cushion the top of your foot all while still remaining hidden while wearing tennis shoes or even with my hey dudes.
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Reviewed in the United States on November 30, 2025
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Nick
Birmingham, US
★★★★★ 5
Great quality and fast shipping
Size: Medium, Color: (001) Black / Black / Castlerock
These socks are tight but after the first wash and dry , they fit perfect and NEVER slide off , ordered a second pack
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Reviewed in the United States on March 24, 2026
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Verified Purchase
Bargain Rig
Natrona Heights, US
★★★★★ 5
Comfortable, Durable, and Stylish
Perfect gift choice! Excellent quality socks with a variety of colors to match any wardrobe.
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Reviewed in the United States on November 30, 2025
M
Verified Purchase
Maranda
Fort Morgan, US
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
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Reviewed in the United States on March 16, 2026
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Verified Purchase
Jessica Burdett
Omaha, US
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
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Reviewed in the United States on October 21, 2025

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