The White Rodgers 764-501 Nat/LP Gas Safety Valve is designed to regulate and control gas flow in systems using either natural gas or propane. It works by opening to allow gas flow when the pilot flame is proven and automatically closing if the flame is lost, preventing unburned gas from entering the system. This safety mechanism helps protect both equipment and operators during operation. Its durable construction supports consistent performance, while the dual-fuel compatibility adds installation flexibility, helping ensure safe, efficient, and dependable operation in commercial kitchen and heating applications.