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Ships within 48 hours · Estimated delivery Jul 22 - Jul 27
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Diffuser/Airstone Backflow ValveBack Flow Valve for DiffusersAll diffusers regardless of whether they are ceramic, rubber membrane or other type of material should have a back flow valve to prevent water from entering your airline. If you do get water coming back up your airline it can cause compressor issues as every time your compressor has to restart, it has to first push the water out of the airline which requires extra pressure. Secondly water in your airline can freeze during
Back Flow Valve for DiffusersAll diffusers regardless of whether they are ceramic, rubber membrane or other type of material should have a back flow valve to prevent water from entering your airline. If you do get water coming back up your airline it can cause compressor issues as every time your compressor has to restart, it has to first push the water out of the airline which requires extra pressure. Secondly water in your airline can freeze during the winter months, which means no air comes out and you put undue pressure on your compressor, which can burn up motors and/or break crankshafts and pistons quickly.
This backflow valve comes with 1/2" female NPT threads on the lower end. Please let us know in the comment section if you need an adapter for 3/8" threads and we'll supply that at no extra charge. The hose barb end fits 3/8", 1/2" and 5/8" airline and attaches to both weighted and non-weighted airline with an included stainless steel hose clamp.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 3
Very hard to see the HANDS, but pretty
Very pretty and I didn't have to remove links. Hard to see the hands unless you angle it in the light. I'm not sure if I'll keep it. I'll give it some time ..lol and see how it goes before Amazon's 30 day policy.
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Reviewed in the United States on July 12, 2025
★★★★★ 3
just makes it around my large wrist - but very pretty
If you also have a large wrist like I do, well ... try it out. Bought it to look delicate and pretty at my son's wedding, to match color of gown. Which it does.
Side note: the hands are cobalt blue, for some reason! But you'd have to look up close to discover that. It doesn't take away from the overall look I wanted.
Edit: !@#$@! - it BROKE halfway through the wedding! During the dancing, I discovered it on the floor.
Downgrading this to one star, of course.
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Reviewed in the United States on July 8, 2023
★★★★★ 2
DIdn't Work
When I got the watch, it wasn't running, so I took it to a local jewelry store and had the battery replaced, which cost another $20+ and it still wouldn't run.
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Reviewed in the United States on September 18, 2023
★★★★★ 5
Stunning automatic watch — looks way more expensive than it is
Color: All Gold, Color: All Gold
I bought this OLEVS automatic as a gift for my husband and he was thrilled. The gold-tone finish is rich and consistent, the open-heart dial showing the movement is a beautiful touch, and the day/week sub-dials work smoothly. The caseback shows the automatic movement clearly — you can see the rotor spinning with every wrist movement. It feels comfortable and the bracelet is solid. For the price, this is an outstanding piece. He gets compliments every time he wears it.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Nice and elegant
Color: All Gold
I love it so much really nice and elegant!!! I'd definitely recommend it!!
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Reviewed in the United States on February 17, 2026