Honeywell Rotary Actuator EM-0400 The BSBFW Actuated Wafer Type Butterfly Valves are suitable for heating and cooling applications. FEATURES OF EM-0400 Wide size range (DN 50…DN500) for PN16 type For On-Off Control Manual override non-clutch design. Manual operation can be operated without any lever, clutch or brake upon power voltage Download PDF Now