Install the spray assembly remove the spray head and flange. Apply a ring of plumbers putty or other sealant to the bottom of the shank according to the putty manufacturer’s instructions. Premium Bath Co. Handheld Bidet & Cloth Diaper Sprayer Kit Turn on water turn the water feedback on using the ball valve or mains stopcock in step 1.Bidet spray installation. Attach spray nozzle attach the spray nozzle provided, to the end of the shower hose. This is known as a douche spray