Siemens 599-02073B VALVE, ANSI 250, MT SERIES, 3-WAY, MIX, LINEAR, 1/2", FXF, 0.63 CV, 3-8 PSISiemens 599 02073B Valve, ANSI 250, MT Series, 3 Way, Mix, Linear, 1 2", FxF, 0. 63 Cv, 3 8 psiThis Valve is a Powermite 599 MT Series, ANSI Class 250, 3 W, Mix, Linear, 0. 63 Cv, FxF, 1 2", Bronze Body, SS Trim, Designed to work with pneumatic or electronic actuators, Direct coupled universal bonnet. No tools required for installation This Valve is a Powermite 599 MT Series, ANSI Class 250, 3 W, Mix, Linear, 0. 63 Cv, FxF, 1 2", Brass Body, SS Trim,