Danfoss EV210BW Direct-Operated Drinking Water Solenoid Valve

EV210BW direct-operated drinking water solenoid valve, DN 1.5 to 6

The Danfoss EV210BW is a small direct-operated 2/2-way solenoid valve with an Eco brass body and EPDM seals for drinking-water and neutral-liquid service. It opens at zero differential pressure, has connections from G1/8 to G3/8 and orifices from 1.5 to 6 mm, and works at differential pressures up to 10 bar depending on orifice and coil. Seven Star LLC supplies the EV210BW in Oman and the GCC as an independent supplier in Muscat; the sections below set out the ranges, pressure limits and checks needed before ordering.

EV210BW technical specifications

Pressure limits by orifice and coil

The datasheet gives the permitted differential pressure by orifice and coil type. NC valves with 1.5, 2 and 3 mm orifices run 0 to 10 bar on all listed AC and DC coils. The NC 4.5 mm orifice runs 0 to 10 bar on AC coils and 0 to 4.5 bar on BB/BE DC coils (0 to 9 bar on BG DC). The NC 6 mm orifice is limited to 0 to 4 bar on BB/BE AC and 0 to 2 bar on BB/BE DC, rising to 6 and 4.5 bar with BG coils. For NO valves, 1.5 and 2 mm remain at 10 bar, 3 mm drops to 5 bar and 4.5 mm to 2 bar. Always check the combination of orifice, function and coil.

How direct operation works

In the NC version a spring presses the valve plate on the orifice when the coil is off. Energising the coil lifts the armature and plate off the orifice and the valve opens regardless of pressure, so it operates at zero or even very low differential pressure; the datasheet gives an example of about 0.08 l/min through the 1.5 mm valve at only 10 mbar. The NO version is open when the coil is de-energised. Because the full force to move the plate comes from the coil, orifices are small and larger orifices are limited in pressure, as the table above shows.

Choosing between the EV210BW and larger valves

The EV210BW suits flows of a few litres per minute, coffee and beverage machines, dosing and water-treatment sampling. For higher flows in the same drinking-water family use the EV250BW with assisted lift (DN 10 to 22) or the servo-operated EV220BW (DN 15 to 50). For aggressive or dirty fluids, the EV212B with isolating diaphragm and stainless body is the appropriate step.

Coil options and power consumption

The valve body is ordered without a coil. The clip-on coils named in the datasheet include BB024AS (24 V, 50 Hz, 11 W, 19 VA, code 018F7358), BB230AS (220–230 V, 50 Hz, 11 W, 19 VA, code 018F7351), the DC coils BB012DS (12 V DC, 13 W, code 018F7396) and BB024DS (24 V DC, 16 W, code 018F7397), and the BE240CS coil (018F6783) with a −25 to 55 °C ambient range. The AC coils are rated for −40 to 80 °C ambient and the DC coils for −40 to 50 °C, so a hot enclosure favours AC coils.

Switching times

As a small direct-operated valve, the EV210BW opens in about 10 to 20 ms in the datasheet figures (indicative for water), which makes it suitable for short dosing pulses and fast filling cycles. Because the armature moves the plate directly, the valve also tolerates the frequent switching typical of dispensing equipment, provided the coil temperature stays inside its rating.

Selection and ordering checklist

• Orifice size from the required flow and Kv value.
• NC or NO function; NO is limited to 4.5 mm.
• Differential pressure and coil type, checked against the table.
• Connection thread G1/8, G1/4 or G3/8.
• Coil voltage; clip-on BB, BE or BG coils.
• Water quality and temperature up to 90 °C.

Installation, commissioning and maintenance

Fit a filter of around 50 mesh in front of the valve, mount at the permitted angle shown in the datasheet and follow the flow arrow. Exercise the valve at least every 24 hours in water service, keep water hardness at 6 to 18 °dH and conductivity at 50 to 800 µS/cm, and avoid stagnant warm water above 25 °C in the valve, as these measures limit scaling and dezincification. Treat the coil as hot during continuous operation.

Typical applications in Oman and the GCC

In the Gulf the valve appears in water dispensers, ice machines, small treatment skids, laboratory and sampling lines, humidifiers and cooling-water control on compact machines. Hard desalinated or mixed supply water makes the filter and exercise routine important, and ambient temperature near hot equipment should be kept under 50 °C.

Information to send with an RFQ

• Orifice, connection and NC or NO function.
• Coil voltage, frequency and AC or DC.
• Pressure, flow and temperature.
• Quantity and delivery location in Oman or the GCC.

Site conditions in Oman for the EV210BW

Valves and their accessories in Oman work in demanding conditions: high ambient temperatures, direct sun on outdoor pipe racks, dust, and corrosive coastal air at many oil, gas and water sites. When you specify the EV210BW, confirm the pressure and temperature ratings, body and trim materials and any sour-service or hazardous-area requirements against the actual line data, and check that seals and soft parts suit the process medium and the full temperature range.

For reliable operation, plan access for maintenance, define which spare parts are kept on site, and record the configuration of each installed EV210BW. Sending the complete process data sheet with your RFQ allows the selection to be checked before the order is placed.

Documents and quotation

A Danfoss datasheet for the EV210BW solenoid valve is attached on this page.

Send the orifice, function and coil data and we will confirm the matching valve.