We are happy to have several different materials for our valves. We offer stainless steel motorized ball valves and also stainless steel solenoid valves. Similarly, both the solenoid valves and the motorized ball valves come in a reliable brass. Finally, plastic (nylon) is available, but only in the solenoid valves at the present time. Each of these materials offers a different benefit, so be sure to find the valve you like, in the material you need.