Description
3/4" 316 Stainless Steel Solenoid Valve – SPU225A-06
The SHAKO SPU225A-06 is a high-flow 3/4" 316 stainless steel 2/2 way normally closed solenoid valve designed for industrial fluid, water, air and compatible gas control applications.
Its pressure-assisted diaphragm design provides a large 25mm orifice and Kv flow factor of 165 L/min, making it ideal for higher-flow applications where a minimum 0.5 Bar pressure differential is available.
Manufactured from corrosion-resistant 316 stainless steel with stainless steel internals, the SPU225A-06 is particularly suitable for RO water, demineralised water, pure water, AdBlue, chemicals and other compatible fluids. Options include alternative seal materials, oxygen-service degreasing and ATEX-certified coils.
Key Features
✓ 3/4" BSPP female port
✓ 316 stainless steel valve body
✓ 2/2 way normally closed operation
✓ Pressure-assisted diaphragm design
✓ Large 25mm high-flow orifice
✓ High flow Kv 165 L/min
✓ 0.5 to 10 Bar operating pressure differential
✓ 15 Bar maximum working pressure
✓ Stainless steel internal components
✓ FKM (Viton®) seals as standard
✓ Optional EPDM, NBR or HNBR seals
✓ Suitable for RO, demineralised and pure water
✓ Suitable for AdBlue with appropriate configuration
✓ Optional silver or no shading ring configurations
✓ Optional oxygen-cleaned / degreased version
✓ Optional ATEX hazardous area coil
✓ IP65 DIN43650A coil system included
✓ Class H, 100% continuous duty coil
✓ Multiple AC and DC voltage options
✓ Free UK delivery available
Valve Function & Operation
Function: 2/2 way normally closed
Operation: Pressure-assisted diaphragm
Minimum Operating Differential: 0.5 Bar
Operating Pressure: 0.5 to 10 Bar differential
Maximum Working Pressure: 15 Bar
The valve is closed when de-energised and opens when electrical power is applied to the solenoid coil.
Ports & Flow
Port Size: 3/4" BSPP female
Optional Threads: NPT or Rc
Orifice Size: 25.0mm
Kv Flow Factor: 165 L/min based on water with 1 Bar pressure drop
Construction & Materials
Body Material: 316 stainless steel
Internal Components: Stainless steel
Standard Seal: FKM (Viton®)
Optional Seals:
EPDM
NBR
HNBR
Shading Ring Options
Standard Shading Ring: Copper
Optional Silver Shading Ring: Suitable for AC or DC configurations
Optional No Shading Ring: DC operation, or AC supply using a suitable rectified AC-to-DC DIN connector
These alternative configurations are useful for high-purity and chemically sensitive applications where copper contact with the controlled media is undesirable.
Media Compatibility
Air
Water
RO water
Demineralised water
Pure water
AdBlue
Light oils
Compatible chemicals
Compatible gases
Fluids up to 50 cSt viscosity
Material and seal compatibility should be confirmed for the specific fluid, concentration and operating temperature.
Seal Options & Temperature Range
NBR: -15°C to +80°C
FKM (Viton®): -10°C to +180°C
EPDM: -5°C to +130°C
HNBR: -40°C to +150°C
Maximum actual operating temperature may also be limited by the coil, pressure, media and application conditions.
Coil & Electrical Specification
Coil Power: 15 Watts
Insulation: Class H
Electrical Connection: DIN 43650 Form A
Protection: IP65 with connector fitted
Duty Rating: 100% continuous duty
Connector: Included
Voltage Options
DC:
6V DC
12V DC
24V DC
48V DC
110V DC
220V DC
AC 50/60Hz:
12V AC
24V AC
36V AC
48V AC
110V AC
230V AC
380V AC
Optional ATEX Coil
An optional ATEX-certified coil is available for hazardous area installations.
Protection: Ex mb IIC T4 Gb / Ex mb tb IIIC T130°C Db
Temperature Class: T4 / T130°C
Suitable for: Zone 21 and Zone 22 applications
Maximum Media Temperature with ATEX Coil: +80°C
ATEX Certificate: Sira 09ATEX6180X
Oxygen-Cleaned / Degreased Option
An oxygen-cleaned/degreased version is available with oil and grease contamination removed for applications requiring enhanced cleanliness.
For oxygen applications, valve configuration, seal materials, pressure, temperature and cleanliness requirements must be confirmed as suitable for the intended service before use.
Typical Applications
Industrial process control
RO and reverse osmosis systems
Demineralised water systems
Pure water installations
Water treatment equipment
AdBlue dispensing and control
Chemical and fluid handling
Industrial air systems
Compatible gas control
OEM machinery
Clean fluid systems
Hazardous area installations with ATEX option
Oxygen and clean-gas applications with appropriate degreased configuration
Technical Information
Function: 2/2 way normally closed
Body: 316 stainless steel
Maximum Working Pressure: 15 Bar
Protection: IP65
HS Code: 84818030
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