4 RSD | 4 Inch Round Motorized Spring Return Damper | EWC Controls Size_3X3/4X3 This Powerstar Retroline Retrostat Pneumatic

This Powerstar Retroline Retrostat Pneumatic Thermostat Kit is a single setpoint

10-1/8 x 2-5/8 x 7-19/32 inches (257 x 67 x 193 mm)

2-1/2 PP BUTTERFLY VALVE SEAT REPAIR KIT EPDM

3/8 X 1/8 (POLYFLO X MIP BRANCH T)

4 X 9 GALV STEEL NIPPLE

4 RSD | 4 Inch Round Motorized Spring Return Damper | EWC Controls Size_3X3/4X3 This Powerstar Retroline Retrostat Pneumatic4 Inch Round Motorized Spring Return Damper Model RSD is a round single blade damper constructed from heavy (24) gauge galvanized steel. The 24 volt motor actuator is direct coupled to the drive shaft. It is a power closed spring open action. (standard). The damper can be field reversed to a power open spring closed action. The RSD has a double layered blade design with an integrated Poron foam gasket to provide a seal when the damper is in the closed