The Siemens 599 Series zone valves work with any SFA/P Series or SSA/P Series electric actuator. The actuators provide two-position, three-position, or 0-10 VDC control. Typical applications include hot or chilled water for zones with radiators, floor heating via manifolds, fan coil units, cooling ceilings, wall-mounted boilers, and VAV applications. Features:Direct-coupled universal bonnetDirect-coupled installation without toolsManual override with 3mm hex wrenchVisual position indication Specifications: Manufacturer: Siemens Building TechnologyManufacturer Part Number: 599-00426Product Type: Positioning Relay and Mounting KitFrequency: 50/60 HertzLeakage Rating: ANSI Class IIIBody Rating: ANSI Class 125Stroke: 0.1", 2.5mmFlow Characteristic: 2-Way, 3-Way DivertingFor Usage: Mounting an 8" Pneumatic ActuatorAction: Two-way valves are stem-up-to-open; three-way valves are diverting; normal position is determined by choice of actuatorDimensions: 10.1" x 6.65" x 3.75"Weight: 2.04 LbTech Sheet