One of the air control valves unscrewed from the sleeve on my Sundance Chelsea spa. I put it back in and it just spins. Not sure how to correct – it doesn’t look like anything is broken on the part.

One of the air control valves unscrewed from the sleeve on my Sundance Chelsea spa. I put it back in and it just spins. Not sure how to correct – it doesn’t look like anything is broken on the part.