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Pentair Manual Air Relief Assembly for FNS, Nautilus Plus, SM & SMBW 4000 Filters — Part 273550

Marsoni M251S
Sale price$84.99
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Pentair Manual Air Relief Assembly for FNS, Nautilus Plus, SM & SMBW 4000 Filters — Part 273550The genuine Pentair 273550 Manual Air Relief Assembly is purpose built to safely release trapped air from your pool or spa filter tank, protecting against excessive pressure buildup and promoting steady filtration output. This assembly incorporates a manual air release valve along with a pressure gauge and is specifically compatible with Pentair FNS, Nautilus Plus, SM, and SMBW 4000 series filters. Manufactured from tough, chemical resistant materials
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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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4.5 ★★★★★
Based on 53 reviews
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Verified Purchase
Marj
Belleville, US
★★★★★ 4
Printers are okay refurbished.
For refurbished it was good had since 2022 just started not being able to connect. Hp quite not compatible any more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 26, 2025
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Verified Purchase
Lillian
Massapequa, US
★★★★★ 5
Refunded my purchase price
I purchased the "TESmart" 2 computer KVM Switch. I always get the added warranty these day for electronics and I am glad I did. It has now been 3 years and the unit has stopped working correctly. It would switch between computers but the mouse and keyboard stopped working for one of the computers. I'm not sure exactly which component stopped working because the keyboard and mouse worked fine for the other computer. I did plugged the mouse and keyboard directly to the computer in question and they worked fine. I believe the "push threw" stopped for my W11 computer, meanwhile, the W7 computer keeps trucking on. I say all that to say this, it's worth paying a few dollars more to get that little bit of extra security on the electronics these days. Unfortunately the prices have gone up on the KVM switches, at least the ones worth buying so I am in search of a new one now. ASURION was easy to work with. It wasn't that much of a hassle. The slight glitch I experienced was their automatic system didn't register my claim correctly. Only mistake I made was making the claim over a weekend. I would say if you make a claim do it during the normal business hours. I was able to chat with an agent during working hours and they were able to remedy the issue quickly. I did have to ship the KVM switch and its components to Asurion but they paid for shipping and once I was able to package and ship the unit back, Asurion refunded my purchase price completely with an Amazon Gift Card. So, all in all, it's all good!
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Reviewed in the United States on June 8, 2024
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Verified Purchase
John Byrd
Pawtucket, US
★★★★★ 5
Asurion Rocks!
Fantastic response. They did a great job of processing the claim. Money well spent! Great service and great protection plan.
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Reviewed in the United States on July 30, 2025
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Verified Purchase
PAUL MARIA
Belleville, US
★★★★★ 5
Something good you should have
Something you should consider to have they were with you and give you your money back if there’s a problem
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Reviewed in the United States on February 15, 2026
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Verified Purchase
Aury
Natrona Heights, US
★★★★★ 5
Easy and convenient to use
Love my product is easy to use, I truly recommend 100% price and quality.
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Reviewed in the United States on May 26, 2026

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