The Rohl AC27NBO is a 4-port, 3-way dedicated diverter rough valve. It is from Rohl's Spa Shower collection. It must be used with volume control(s) or pressure balance systems. This diverter has a ceramic disc control cartridge. It has a minimum depth of 2 1/8" and a maximum depth of 3 1/8". The flow rate is up to 5 gallons per minute. It has a 1/2"F inlet and 3 x 1/2"F outlets. The flow can be split between adjacent outlets. If only 2 outlets are being utilized, loop the dead outlet to a live outlet so that the diverter would not have an off function. Please see the specification sheet for more details. The Rohl AC27NBO 4-port, 3-way rough dedicated diverter is covered by a limited lifetime warranty. It is a representation of Rohl's commitment to making products that are easy for the customers to install and use. The House of Rohl has been in the business since 1983. They have reached success by providing distinctively different faucets and fixtures that define real luxury. To create superior products that will enhance your way of living is Rohl's goal. Here at PlumbersStock, we guarantee that you have access to the highest quality products and resources at very affordable prices. We pride ourselves in striving for excellence in every aspect of what we do.