The Siemens MVI421 series offers 2-Port and 3-Port Zone Valves & Actuators, PN16

Application

In ventilation and air conditioning systems for water-side terminal unit control in closed circuits, e.g. induction units, fan coil units, small re-heaters and small recoolers, for use in -2-pipe systems with 1 heat exchanger for heating and cooling -4-pipe systems with 2 separate heat exchangers for heating and cooling · In closed-circuit zone heating systems, For example:

-Separate floors in a building

-Apartments -Individual rooms

-Floor heating

Specification

• Operating voltage AC 230 V
• 2-position control signal ·
• Spring return · Positioning force 200 N
• Direct mounting with union nut, no tools required
• Ergonomically designed manual adjuster
• Auxiliary switch, type ASC2.1/18 (optional)
• Hot-pressed brass valve body · DN 15, DN 20 and DN 25
• kvs 2…5 m3 /h
• Internally threaded connections Rp.. to ISO 7-1