Navigator Vac Lock Safety Wall Fitting - 1-1/2 Inch MPT - Black inlet-pipe-size_12" This cleaner features a Flowkeeper

This cleaner features a Flowkeeper Valve which automatically regulates water flow

Note: the disk must be kept flat between tests so water in the disk from the previous test doesn't migrate into the untested wells

Choose between durable plastic or elite stainless steel treads

Rinse off the residue with clear water immediately after scrubbing

Navigator Vac Lock Safety Wall Fitting - 1-1/2 Inch MPT - Black inlet-pipe-size_12" This cleaner features a FlowkeeperThis is a Hayward W400BBKP Vac Lock Safety Wall Fitting for Navigator Pool Cleaners. The color is Black and the fitting is 1 1 2 inch MPT. Recommended for all pools with a dedicated suction line, the vac lock is a safety device that closes the suction line when the cleaner is not in use. It also holds the hose in place when the cleaner is installed.