This 3-way diverter valve meets European standard ,suitable for Europe,can be used on toilet bidet The diverter changes the direction of water flow,water can not only flow in one direction but also in two directions at the same time The bidet sprayer can be locked and will not be accidentally opened, making it ideal for families with children. The connection size of this toilet diverter is 15.5 mm (3/8") female outlet, 16.6 mm / (3/8") male inlet and 20 male outlet. mm (1/2 “) The diverter is made of high quality brass and chrome, which makes it very resistant