![What is this knob at the top of my inflatable hot tub? It is not under the water when no one is in the tub. The hot tub is a Bestway SaluSpa What is this knob at the top of my inflatable hot tub? It is not under the water when no one is in the tub. The hot tub is a Bestway SaluSpa](https://preview.redd.it/what-is-this-knob-at-the-top-of-my-inflatable-hot-tub-it-is-v0-69rprzhd80g91.jpg?auto=webp&s=3f17297a35e1a098d93721596b529641f91e9515)
What is this knob at the top of my inflatable hot tub? It is not under the water when no one is in the tub. The hot tub is a Bestway SaluSpa
![Plug and play hot tubs - helpful setup tips with must-get accessories - Part 3 - Funky Junk Interiors Plug and play hot tubs - helpful setup tips with must-get accessories - Part 3 - Funky Junk Interiors](https://www.funkyjunkinteriors.net/wp-content/uploads/2023/08/plug-and-play-hot-tubs-006.jpg)
Plug and play hot tubs - helpful setup tips with must-get accessories - Part 3 - Funky Junk Interiors
![Lay-Z-Spa® AirJet Hollywood 6 Person Inflatable Hot Tub | Fast & Free Delivery with Premier Service – Outdoor Living Lay-Z-Spa® AirJet Hollywood 6 Person Inflatable Hot Tub | Fast & Free Delivery with Premier Service – Outdoor Living](https://www.outdoorlivinghottubs.co.uk/cdn/shop/files/Lay-Z-SpaHollywoodHotTub_300x.jpg?v=1697811073)
Lay-Z-Spa® AirJet Hollywood 6 Person Inflatable Hot Tub | Fast & Free Delivery with Premier Service – Outdoor Living
![Amazon.com : Coleman SaluSpa Inflatable Hot Tub Spa | Portable Hot Tub with Heated Water System and 140 Bubble Jets | Fits Up to 4 People : Patio, Lawn & Garden Amazon.com : Coleman SaluSpa Inflatable Hot Tub Spa | Portable Hot Tub with Heated Water System and 140 Bubble Jets | Fits Up to 4 People : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/71D4G2EAb2L.jpg)
Amazon.com : Coleman SaluSpa Inflatable Hot Tub Spa | Portable Hot Tub with Heated Water System and 140 Bubble Jets | Fits Up to 4 People : Patio, Lawn & Garden
![Bestway SaluSpa Fiji 4 Person 120 Air Jet 177 gal. Inflatable Hot Tub, Gray, 104ºF Max Temperature - Walmart.com Bestway SaluSpa Fiji 4 Person 120 Air Jet 177 gal. Inflatable Hot Tub, Gray, 104ºF Max Temperature - Walmart.com](https://i5.walmartimages.com/asr/150450b7-1035-47cf-b9e2-b1749d480ca6.cd9ae49cce35002cfbc1bfd714ff2487.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Bestway SaluSpa Fiji 4 Person 120 Air Jet 177 gal. Inflatable Hot Tub, Gray, 104ºF Max Temperature - Walmart.com
![Amazon.com : Bestway SaluSpa Hawaii AirJet 2 to 6 Person Square Inflatable Hot Tub Portable Outdoor Spa with 140 Soothing AirJetsr, Blue : Patio, Lawn & Garden Amazon.com : Bestway SaluSpa Hawaii AirJet 2 to 6 Person Square Inflatable Hot Tub Portable Outdoor Spa with 140 Soothing AirJetsr, Blue : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/71u6tnUbpBL.jpg)
Amazon.com : Bestway SaluSpa Hawaii AirJet 2 to 6 Person Square Inflatable Hot Tub Portable Outdoor Spa with 140 Soothing AirJetsr, Blue : Patio, Lawn & Garden
![Lay-Z-Spa® AirJet Miami 4 Person Inflatable Hot Tub | Fast & Free Delivery with Premier Service – Outdoor Living Lay-Z-Spa® AirJet Miami 4 Person Inflatable Hot Tub | Fast & Free Delivery with Premier Service – Outdoor Living](https://www.outdoorlivinghottubs.co.uk/cdn/shop/products/01Hero_28ac561f-af33-481d-aa0a-aca7d70ff447_grande.jpg?v=1659542925)