3/4" WRAS Normally Open Water Solenoid Valve – PU225DN-06
WRAS Approved SHAKO Normally Open Brass Water Solenoid Valve
The SHAKO PU225DN-06 is a 3/4" WRAS approved brass normally open solenoid valve designed for potable water, priority demand, sprinkler and general water control applications.
This 2/2 way pressure-assisted diaphragm valve remains open when de-energised and closes when electrical power is applied. Its normally open design is particularly useful where water flow is required to resume automatically following loss of electrical power.
Featuring a large 25mm orifice with a Kv flow factor of 165 L/min, the PU225DN-06 provides high flow capacity, while its anti-water-hammer design and approximately 2-second operating time help reduce hydraulic shock within larger water systems.
Typical Applications
Potable water systems
Priority demand valve systems
Fire sprinkler installations
Water treatment equipment
Commercial building water control
Industrial water management
Irrigation systems
OEM machinery
High-flow process water systems
Normally open water control systems
Technical Specification
Function: 2/2 way normally open
Fail Position: Open when de-energised
Energised Position: Closed
Operation: Pressure-assisted diaphragm
Design: Anti-water-hammer
Minimum Differential Pressure: 0.5 Bar
Operating Differential: 0.5 to 10 Bar
Maximum Working Pressure: 15 Bar
Opening / Closing Time: Approx. 2 seconds
Port Size: 3/4" BSPP female
Optional Thread: NPT
Orifice Size: 25mm
Kv Flow Factor: 165 L/min based on water with 1 Bar pressure drop
Body Material: Brass
Internal Components: Stainless steel
Seal Material: WRAS approved EPDM
Suitable Media: Potable water and compatible water-based fluids
Media Temperature: -5°C to +130°C
Coil & Electrical Specification
Coil: Nass Magnet system
Coil Power: 15 Watts
Insulation Class: Class H 180°C
Duty Rating: 100% continuous duty
Protection Rating: IP65 with connector
Electrical Connection: DIN 43650 Form A
Connector: Included
Voltage Options
DC: 12V, 24V, 48V, 110V or 220V
AC 50/60Hz: 12V, 24V, 36V, 48V, 110V, 230V or 380V
EPDM seals and gaskets are WRAS approved for potable water applications.
WRAS Approval: 2304324
Why Choose a Normally Open Solenoid Valve?
A normally open solenoid valve remains open without electrical power and closes when energised. If power is removed, the PU225DN-06 automatically returns to its open position.
This makes it useful for water systems where flow should be maintained or restored following loss of electrical power, including certain priority demand, sprinkler, cooling and process-water applications.
For safety-critical installations, the complete valve, controller and system configuration should be selected to meet the requirements of the application.
Pressure:
3 Bar, 3.5 Bar, 4 Bar, 4.5 Bar, 5 Bar, 5.5 Bar, 6 Bar, 6.5 Bar, 7 Bar, 7.5 Bar, 8 Bar, 8.5 Bar, 9 Bar, 10 Bar, 12 Bar, 13 Bar, 14 Bar, 15 Bar
