032U7120 Danfoss EV220B Solenoid Valve EVSI 20 NC 20B G3/4 NC

032U7120 Danfoss EV220B Solenoid Valve EVSI 20 NC 20B G3/4 NC

1.Overview of the 032U7120 Danfoss

The Danfoss 032U7120 is a DN20 normally closed solenoid valve from the EV220B series, designed for industrial fluid control and suitable for neutral media such as water, oil, and gas. Its brass body and FKM seals offer excellent corrosion and high-temperature resistance, ensuring long-term stable operation under complex operating conditions.

This solenoid valve has a rated voltage of 48VDC and offers high drive power, making it suitable for applications requiring fast response and frequent opening and closing. With a maximum operating pressure of 16 bar, it offers fast response and excellent sealing, effectively preventing fluid leakage and improving system efficiency and safety.

The Danfoss 032U7120 is widely used in HVAC, refrigeration systems, water treatment, and industrial automation, particularly in medium- to large-scale systems requiring high flow control and sealing performance. Its coil has an IP65 protection rating, providing excellent dust and water resistance, making it suitable for a variety of industrial environments.

2.Core Features:

The Danfoss 032U7120 is a EV220B series servo-type, diaphragm-type, two-way, solenoid valve. Its valve body and connector are made of dezincification-resistant brass, with a G3/4 (ISO 228-1) threaded connection. It has a flow rate of 20 mm, a Kv value of 8 m³/h, and a Cv value of 9.25 gal/min. It operates reliably within a pressure differential range of 0.3–16 bar, with a maximum pressure resistance of 24 bar and a maximum media viscosity of 50 cSt. It is suitable for neutral liquids or gases with temperatures between -30°C and 120°C, including water, brine, and steam (≤4 bar).

The valve is a normally closed (NC) type with a servo-operated diaphragm structure, opening in just 40 ms. A built-in one-way arrow embossing indicates flow direction, preventing reverse installation. The seal is made of EPDM, and an optional balancing hole design reduces the shock of the opening and closing pressure differential, extending service life. The coil uses a Class B 13.5 mm universal armature system, has an upper ambient temperature limit of 80°C, an IP65 protection rating, and supports multiple voltages, including 24 VDC and 230 VAC. It can be quickly replaced on-site without special tools; maintenance only requires replacing the diaphragm assembly or coil.

This product has passed international classification society and health certifications such as DNVGL-CG-0339, GL, and PZH, is exempt from China RoHS, and complies with WEEE recycling standards. The net weight of each unit is 0.86 kg, and the whole box is packed with 24 units. Its high flow rate, low pressure drop, corrosion resistance, and marine-grade reliability make it widely used in HVAC hot water systems, industrial cooling loops, seawater desalination, food-grade water treatment, and building automation, where long periods of unattended operation are required. It is Danfoss's main model for medium- and high-pressure, large-caliber fluid control.

3.Product details pictures

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