Description
2" WRAS N/Open Water Solenoid Valve – Danfoss EV220BNO
The Danfoss 132U5001 is a 2" WRAS approved normally open brass solenoid valve designed for high-flow potable water systems where the valve must remain open when electrical power is removed.
This 2/2 way normally open, pressure-assisted valve provides a large 50mm orifice, Kv 40 m³/h flow capacity and 0.3–16 Bar operating pressure, combined with controlled anti-water-hammer operation.
The 132U5001 replaces the previous Danfoss 032U7152, providing a useful cross-reference for replacement and existing installations.
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 pressure-assisted diaphragm requires a minimum 0.3 Bar differential pressure for reliable operation.
With no electrical power applied, the valve remains open. Energising the solenoid closes the valve, providing fail-safe open operation.
2" BSP Connection & High Flow
Port Size: 2" BSP
Orifice Size: 50mm
Kv Flow Factor: 40 m³/h
The large 50mm flow path provides excellent flow capacity through 2" pipework, making the valve suitable for demanding commercial, industrial and building-services water systems.
Anti-Water-Hammer Operation
Opening Time: 5 Seconds
Closing Time: 10 Seconds
The controlled 10 second closing time is particularly beneficial on larger pipework, helping reduce sudden changes in water velocity when the valve is energised closed.
This controlled operation helps minimise hydraulic shock, pressure surges and water hammer in high-flow 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 seals provide durable construction for potable-water installations.
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: 162mm
Body Width: 113mm
Coil Width: 46mm
Overall Height: 135mm
H1 Dimension: 37mm
Weight: Approximately 4.8kg
Typical Applications
✓ Potable Water Distribution
✓ Commercial Plumbing Systems
✓ Building Services
✓ Water Treatment Equipment
✓ Industrial Water Control
✓ Filtration Systems
✓ Cooling Water Systems
✓ Process Water Systems
✓ High-Flow Water Systems
✓ Fail-Safe Open Water Control
✓ Water Hammer Sensitive Systems
Why Choose the Danfoss EV220BNO?
The Danfoss 132U5001 combines WRAS-approved construction, normally open fail-safe operation and 16 Bar pressure capability with the highest flow capacity in this EV220BNO BSP range.
Its 50mm orifice and Kv 40 m³/h provide substantial flow through 2" pipework, while the controlled 10 second closing time helps minimise hydraulic shock and water hammer.
The normally open configuration ensures the valve remains open if electrical power is lost and closes when energised, making it particularly suitable where continued water flow is the required 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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