Emerald Spa Air Injector

Emerald Spa air injector. Complete, dark grey only, for 3/8" clear vinyl tubing. This is the one and only -Jan '09 version...replaces ALL older styles -white round one, grey scalloped 'flower' style, and '08 shalt-shaker type. TIP: Clean spa shell thoroughly,silicone everywhere, don't over-tighten (21 in.-lbs. max),Use pvc glue to affix tubing (no primer), no "hose hang" from backside.