Danfoss EV220B 40 | Pilot-Operated 2/2 Solenoid Valve, G1½", 24/110/230V AC/DC
Danfoss EV220B 40 (EV220B-40B0400) pilot-operated 2/2-way solenoid valve. DN40 (G1½"), 0.3-16 bar, brass body, NBR/EPDM/FKM seal options, for water, air, oil.
Product Overview
The Danfoss EV220B 40 (typically ordered as EV220B-40B0400 with coil specified separately) is a pilot-operated 2/2-way (normally closed) solenoid valve from the EV220B series, designed for automatic shut-off or flow control of neutral and slightly aggressive media. It features a DN40 (1½") BSP threaded connection, a brass body, and is available with NBR, EPDM, or FKM (Viton) seals depending on the medium. The valve requires a minimum pressure differential of 0.3 bar to shift open (pilot-assisted) and is suitable for water, compressed air, oils, and low-viscosity fluids in HVAC, irrigation, and industrial process lines.
Technical Specifications (Performance & Media)
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Parameter
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Specification
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Series / Model
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EV220B 40 (Type: EV220B-40B0400 base valve)
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Function
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2/2-way, Pilot-Operated, Normally Closed (NC)
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Port Size (DN)
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DN 40 — G 1½" BSP (Female Thread)
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Orifice / Kv Value
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Kv ≈ 30 m³/h (Check exact orifice ø — typically 40 mm)
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Min. Operating Pressure (Δp)
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0.3 bar (30 kPa) — must have pressure differential to open
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Max. Operating Pressure
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16 bar (PN 16) — some coil/seal combos may limit to 10 bar
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Media Temperature Range
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-20 … +90 °C (NBR seals) / -20 … +140 °C (EPDM) / -20 … +130 °C (FKM)
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Ambient Temperature (Coil)
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-10 … +50 °C (AC coils), -10 … +60 °C (DC coils)
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Suitable Media
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Water, Air, Inert Gases, Light Oils, Glycol ≤ 30% (viscosity < 40 cSt)
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Technical Specifications (Mechanical & Electrical)
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Parameter
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Specification
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Body Material
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Brass (Dezincification-resistant alloy on later versions)
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Seal Material Options
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NBR (Nitrile) / EPDM / FKM (Viton®) — ordered via suffix
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Internal Parts
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Stainless Steel (Moving Core, Spring, Pilot Orifice)
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Coil Requirement
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Ordered Separately — BF or BW series (e.g., 018F6758 for 230V AC, 018F6701 for 24V DC)
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Connection Type
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Female G 1½" BSP Thread (ISO 228/1)
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Mounting Position
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Recommended vertical (coil up); horizontal acceptable
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Protection (with Coil + Connector)
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IP65 (with molded coil + DIN 43650 connector)
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Approvals
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CE, UL, cUL, WRAS (NBR version for potable water), ACS
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Key Features
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Pilot-Operated — High Flow in Compact Body: Uses line pressure to assist opening, allowing large Kv (≈30 m³/h) with a small coil — energy-efficient vs. direct-lift equivalents.
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Interchangeable Seals: NBR standard for water/air; EPDM for hot water/steam traces; FKM for oils/solvents — select by application.
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Modular Coil System: Coil (voltage/wattage) ordered separately — one valve body serves multiple voltages (24V DC, 24V AC, 110V AC, 230V AC).
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WRAS Approval (NBR Version): Suitable for potable water systems in the UK/EU (check local certification requirements).
Applications
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HVAC & Building Services: Chilled/hot water zone control, boiler feed line shut-off, cooling tower bypass.
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Irrigation & Agriculture: Main line solenoid shut-off for large-area sprinkler systems.
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Industrial Process: Compressed air main isolation, coolant flow control, detergent dosing (with FKM seals).
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Washdown & CIP: With EPDM seals — temperature-rated for clean-in-place rinse cycles (≤90–140°C depending on seal).
Note: The EV220B is pilot-operated and requires minimum 0.3 bar pressure differential — it will NOT open on zero differential (tank gravity drain with no backpressure). For zero-minimum-differential (direct lift) at DN40, see Danfoss EV210B or EV310B series (typically smaller DN). Coil and seal material must be specified at time of order — example complete part: EV220B-40B0400 (body) + 018F6758 (230V AC 8W BF coil) + DIN connector.
