Description
3/4" WRAS N/Open Water Solenoid Valve – Danfoss EV220BNO
The Danfoss 132U2001 is a 3/4" WRAS approved normally open brass solenoid valve designed for potable water systems where unrestricted flow is required when electrical power is removed.
This 2/2 way normally open, pressure-assisted valve provides a 20mm orifice, Kv 8.0 m³/h flow capacity and 0.3–16 Bar operating pressure, together with controlled anti-water-hammer operation.
The 132U2001 replaces the previous Danfoss 032U7122 model.
Valve Function & Operation
Function: 2/2 Way Normally Open
Operation: Pressure Assisted
Fail Position: Open
Energised Position: Closed
Minimum Pressure Differential: 0.3 Bar
Maximum Operating Pressure: 16 Bar
The normally open configuration allows water to flow when electrical power is removed. Applying power closes the valve, making it suitable for fail-safe open water-control applications.
3/4" BSP Connection & High Flow
Port Size: 3/4" BSP
Orifice Size: 20mm
Kv Flow Factor: 8.0 m³/h
The 20mm flow path provides substantial capacity through 3/4" pipework, with twice the nominal Kv of the 1/2" model.
Anti-Water-Hammer Operation
Opening Time: 0.04 Seconds
Closing Time: 1.0 Second
The controlled closing characteristic helps reduce sudden changes in water velocity when the valve is energised closed.
This helps minimise pressure surges and water hammer in mains-water, commercial plumbing and industrial water systems.
Brass & Stainless Construction
Body Material: Brass
Internal Components: Stainless Steel
Seal Material: EPDM
The robust brass valve body, stainless steel internal components and WRAS-approved EPDM sealing provide durable construction for potable-water applications.
WRAS Approved for Potable Water
The valve is configured with WRAS approved EPDM seals for potable-water applications.
Typical Media:
✓ Potable Water
✓ Mains Water
✓ Process Water
✓ Water Treatment Systems
✓ Compatible EPDM-Suitable Fluids
Maximum Fluid Viscosity: 50 cSt
Solenoid Coil
Coil Type: BB
DC Coil Power: 18 Watts
AC Coil Power: 10 Watts
Insulation Class: Class H 180°C
Duty Cycle: 100% Continuous
Protection: IP65 With Connector
Electrical Connection: DIN 43650A
Electrical Connector: Included
Voltage Options
✓ 12V DC
✓ 24V DC
✓ 24V AC
✓ 110V AC
✓ 230V AC
Voltage Tolerance: ±10%
Dimensions & Weight
Overall Length: 90mm
Body Width: 58mm
Coil Width: 46mm
Overall Height: 103mm
H1 Dimension: 18mm
Weight: Approximately 0.9kg
Typical Applications
✓ Potable Water Distribution
✓ Commercial Plumbing Systems
✓ Building Services
✓ Water Treatment Equipment
✓ Filtration Systems
✓ Industrial Water Control
✓ Cooling Water Systems
✓ Process Water Systems
✓ Fail-Safe Open Water Control
✓ Water Hammer Sensitive Systems
Why Choose the Danfoss EV220BNO?
The Danfoss 132U2001 combines WRAS-approved construction, normally open fail-safe operation and 16 Bar pressure capability in a high-flow 3/4" brass valve.
Its 20mm orifice and Kv 8.0 m³/h provide excellent flow capacity, while the pressure-assisted diaphragm and controlled closing characteristic help reduce hydraulic shock and water hammer.
The normally open configuration means the valve remains open without power and closes when energised, making it ideal where continued water flow is the required electrical fail-safe condition.
Available Normally Open Sizes
1/2" BSP – 15mm – Kv 4.0 m³/h
3/4" BSP – 20mm – Kv 8.0 m³/h
1" BSP – 25mm – Kv 11 m³/h
1¼" BSP – 32mm – Kv 18 m³/h
1½" BSP – 40mm – Kv 24 m³/h
2" BSP – 50mm – Kv 40 m³/h
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