Motorized Zone Valves with Spring Return

About Motorized Zone Valves with Spring Return

MOTORIZED ZONE VALVES WITH SPRING RETURN FOR COPLANAR HEADERS.SERIES SF415.

MAIN CHARACTERISTICS : SF 415 valves are 4-way valves for hydraulic circuits. They are outstanding For compactness and can be used in heating systems or as control components in head exchange coils in the terminal units of air conditioning systems. They are charged by an electric motor and can assume two operating positions depending on whether the motor is activated. Alternatively, not. An auxiliary switch can be installed on request and activated when the valve is switched. The valves are furnished with an external lever for manual positioning of the shut off ball in a central position. They also have a built-in- by-pass to balance the hydraulic when the valve is closed. The load loss generated by the by- Pass can be regulated using a graduated knob placed on the side of the valve.

OPERATION: The valve when it is de-energized and flow form outlet a returns through the by - pass into path D which is the heating system return. The by-pass diameter is reduced and generates a load loss p that can be regulated by the compared to the losses generated by the header in addition, the radiators. Fig. 3B shows the valve when it is energized. Outlet A-B is open and the fluid returns through path C-D the return path of the heating system. Note:Do not install the valve upside down, with the cover facing down, as it is a possible of water.

USING THE MANUAL LEVER: A lever is located on the side of the servomotor and permits manual positioning of the shut-off ball in an intermediate position (fig.4). It is only used in emergencies. Release the lever after it is used and before starting with electrical operating again. The lever rest, form manual to automatic, takes place automatically whenever the valve is activated by electricity.

AUXILIARY SWITCHES: Versions can be equipped with a single-pole micro switch (M1 version with C-NO connection) or two-pole micro switch (M1S versions). There is a special kit for installing single -pole auxiliary switch even in versions that do not come factory - equipped with this switch (M1kit.). The M1S kit cannot be installed in versions, which do not mount them originally.

FUNCTIONAL CHARACTERISTICS : Rated supply voltage 230 Vac. (available: 24, 110 Vac.; 50HZ) Absorbed power 5/6 W Degree of protection IP22 IES 529 Standards European Standards Ref. CEI EN 60529 Auxiliary contact capacity 3 A, 250 Vac. Maximum differential pressure -1.54 Kg/cm Flow rate coefficient 3.9 m/h Rated pressure PN 10 Flow temperature. Limits: +5 / 110°C Maximum room temperature; 60°C Nominal opening time 20 sec. Nominal closing time 6 Sec. Cable length 1000 mm.

MATERIALS : Valve body: Brass Valve cover: Brass Ball - bearing pin Brass Motor covers self-extinguishing ABS Return Springs Stainless steel Bypass

Reliable Operation and Safety

This motorized valve provides secure flow control with an automatic spring return mechanism, ensuring it safely returns to its default position during power loss. The brass construction and IP40-rated protection enhance durability in varied environmental conditions, valuable for HVAC and industrial heating system integration.


Versatile Applications

Compatible with a wide range of media, including water, air, and oil, the valve operates efficiently in temperatures from 0C to 95C. Its threaded 1 (25mm) port size suits standard plumbing systems, making it an excellent choice for both residential and commercial zoning installations.


Flexible Installation and Maintenance

The valves compact design supports both horizontal and vertical mounting. The manual override feature allows for intervention during emergencies or maintenance, guaranteeing reliability in critical zoning applications. With a cycle life exceeding 100,000 operations, longevity is assured even in heavy-use environments.