The Speakman Sentinel Mark II® Shower Valve line is designed to provide high quality anti-scald pressure balanced protection. Speakman Sentinel Mark II Valves feature an independent center sleeve which allows up to 1 of roughing in variation. Temperature can be adjusted through the temperature limit stops and the valves have a ceramic temperature regulating module. Sentinel Mark II SM-3400 valves feature polished chrome plated brass trim with a metal index plate and are vandal resistant. Each valve is equipped with integral stops. Sentinel Mark II valves provide superior protection down to 2.0 GPM. The SM-3400 features a lever handle for easy operation. The SM-3400 is certified to meet ASSE 1016 and ASME A112.18.1/CSA B125.1 standards.