The Bendix® E-10™ dual brake valve is similar to the E-6® dual brake valve except that a metal coil spring housed in an upper body assembly replaces the rubber spring used in the E-6® valve. The use of a metal coil spring (and the upper body assembly) provides greater treadle travel and, therefore, provides the driver with a less sensitive “feel” when making a brake application. The E-10™ dual brake valve is generally used on buses, where smooth brake applications contribute to passenger comfort.