Blower Check Valve prevents spa water back-flow from destroying blower motor. Inside the cabinet as an added precaution, tie the hose above the water line, as shown.
Water back-flow prevention
¼ lb. rating
1½" (inside) or 2" (outside) hose
Product notes: Observe flow-direction arrow. Don't cement blower hose connections - use set screws or clamps. Tip - Adapt a 1½" blower to 2" plumbing by attaching a short section of 1½" hose to the blower, and using the Check Valve to join to 2" hose.
This check valve was used to keep water from backing up into my spa blower. There should have been one in the original design. I was worried that the check valve would introduce to much pressure drop in the air flow but this was not the case. It worked great!!
C
Craig
Air check valve.
Works great and built very well.
R
Ryan L.
Let the water right through
Installed check valve with my brand new air blower from Spa Depot. Used hot tub once and new air blower was flooded with water due to check valve not stopping the water.
