Enables you to deflate your Lay-Z-Spa via the heater pump Joint connects to pump via inflation hose supplied with spa Can only be attached to spas that have a massage seam Suitable for every Lay-Z-Spa except Palm Springs HydroJet This Deflation T-joint allows you to deflate your inflatable Lay-Z-Spa liner by connecting a pump. The deflation attachment allows you to connect a Lay-Z-Spa heater pump to the liner via an inflation hose. The Deflation T-Joint can only be attached to spas that have a massage seam and isn’t compatible with the Lay-Z-Spa Palm Springs HydroJet (BW54144).