Key Features
✓ 1/2" BSP 316 Stainless Body
✓ 2/2 Way Normally Closed
✓ Zero-Rated Assisted Lift
✓ Zero Positive Pressure Start
✓ Suitable for Vacuum Service
✓ High Pressure to 12 Bar
✓ 12 Bar AC & DC Operation
✓ Large 13mm Flow Orifice
✓ 35 L/min Water Flow
✓ High-Power 18.5W Operator
✓ Stainless Steel Internals
✓ FKM Seal as Standard
✓ NBR, EPDM or HNBR Options
✓ Media Range -40°C to +180°C
✓ Suitable for RO Pure Water
✓ 100% Continuous Duty Coil
✓ Class H Solenoid Operator
✓ IP65 DIN Electrical Connection
✓ Silver Shading Ring Option
✓ Optional Degreased Version
✓ BSP, NPT or Rc Threads
✓ 316 Stainless Construction
Description
1/2" 12 Bar Stainless Solenoid Valve – SHAKO SPU220A-04H
The SHAKO SPU220A-04H is a high-pressure 1/2" 2/2 way normally closed zero-rated assisted-lift solenoid valve manufactured from corrosion-resistant 316 stainless steel.
Designed for compressed air, water, vacuum, light oils and compatible aggressive or high-purity process fluids, the SPU220A-04H combines zero-rated operation with increased pressure capability up to 12 Bar.
The higher-power 18.5W Class H solenoid operator provides increased magnetic force, allowing operation from zero positive pressure through to 12 Bar with either AC or DC power.
A 13mm orifice provides approximately 35 L/min water flow at 1 Bar pressure differential. FKM (Viton) seals are fitted as standard, with NBR, EPDM and HNBR alternatives available. For AdBlue / DEF applications, select the EPDM seal configuration.
Valve Function & Operation
Function: 2/2 way normally closed
Operation: Zero-rated assisted lift
Construction: Diaphragm
Port size: 1/2" BSP
Optional threads: NPT or Rc
Orifice: 13mm
The SPU220A-04H is normally closed when electrically de-energised. Applying electrical power energises the solenoid operator and opens the valve.
Its assisted-lift construction combines direct mechanical lifting with diaphragm assistance, allowing the valve to operate from zero positive pressure without requiring the minimum differential pressure associated with conventional pilot-operated diaphragm valves.
The higher-power 18.5W operator increases magnetic force and extends the maximum positive operating pressure to 12 Bar with either AC or DC power.
Pressure & Performance
Pressure range AC: 0 to 12 Bar
Pressure range DC: 0 to 12 Bar
Vacuum service: Suitable
Orifice size: 13mm
Flow rate: 35 L/min water @ 1 Bar ΔP
Opening / closing time: ≤50ms
Coil power: 18.5W
Construction & Materials
Body: 316 stainless steel
Tube: Stainless steel
Internal components: Stainless steel
Construction: Assisted-lift diaphragm
Orifice: 13mm
Standard seal: FKM (Viton)
Optional seals:
✓ NBR
✓ EPDM
✓ HNBR
Standard shading ring: Copper
Optional shading ring: Silver
Optional: No shading ring
Installation: Coil upright
Net weight: Approximately 0.715kg
Seal & Media Selection
Correct seal selection is essential when using the SPU220A-04H with different fluids and temperatures.
FKM (Viton) – Standard:
✓ -10°C to +180°C
✓ Oils and fuels
✓ Many process fluids
✓ Higher temperatures
NBR:
✓ -15°C to +80°C
✓ Air
✓ Water
✓ Neutral gases
✓ Mineral oils
HNBR:
✓ -40°C to +150°C
✓ Air
✓ Water
✓ Oils
✓ Low-temperature service
EPDM:
✓ -5°C to +130°C
✓ Water
✓ Hot water
✓ AdBlue / DEF / AUS 32
✓ Suitable aqueous fluids
For AdBlue / DEF applications, select the EPDM seal configuration rather than the standard FKM version.
Always confirm chemical compatibility before using the valve with aggressive chemicals, fuels, oxygen or unusual process fluids.
Media Temperature
The maximum media temperature is determined by the selected seal material and suitable solenoid operator.
FKM (Viton): -10°C to +180°C
NBR: -15°C to +80°C
EPDM: -5°C to +130°C
HNBR: -40°C to +150°C
Overall available range: -40°C to +180°C
Flow Performance
Orifice size: 13mm
Flow rate: 35 L/min water @ 1 Bar ΔP
The 13mm assisted-lift diaphragm provides high flow capacity while maintaining zero-rated operation.
Unlike conventional pilot-operated diaphragm valves, the SPU220A-04H does not require a positive inlet-to-outlet differential pressure to initiate operation.
This allows the valve to combine high flow, zero-pressure operation and increased positive pressure capability within a compact 1/2" stainless steel valve.
Coil & Electrical
Coil power: 18.5W
Insulation: Class H 180°C
Duty cycle: 100% continuous
Electrical connection: DIN43650A
Protection: IP65 with connector fitted
Coil construction: Thermoset resin
The higher-power 18.5W Class H operator provides the increased magnetic force required for operation up to 12 Bar with either AC or DC power.
Voltage Options
18.5W DC options:
✓ 12V DC
✓ 24V DC
✓ 48V DC
✓ 110V DC
✓ 220V DC
18.5W AC options:
✓ 24V AC
✓ 48V AC
✓ 110V AC
✓ 230V AC 50/60Hz
RO & Pure Water Options
The 316 stainless steel construction makes the SPU220A-04H particularly suitable for RO water, demineralised water and high-purity water applications.
Alternative operator configurations include:
✓ Silver shading ring option
✓ No shading ring for DC
✓ Rectified AC/DC configuration
The standard operator incorporates a copper shading ring. Where copper contact is undesirable, SHAKO offers a silver shading-ring operator specifically for RO and pure-water applications or an operator without a shading ring for DC/rectified operation.
Special Options
✓ NPT or Rc thread options
✓ NBR seal option
✓ EPDM seal option
✓ HNBR seal option
✓ Silver shading ring
✓ No shading ring option
✓ RO / pure water configuration
✓ AdBlue EPDM configuration
✓ Alternative coil voltages
✓ High-temperature configuration
✓ Degreased configuration
✓ Oxygen-cleaned configuration
Typical Applications
✓ High-pressure fluid control
✓ RO water systems
✓ Demineralised water systems
✓ Pure water systems
✓ AdBlue / DEF with EPDM seals
✓ Vacuum systems
✓ Chemical process systems
✓ Corrosive fluid control
✓ Industrial water systems
✓ Water treatment equipment
✓ Air and gas control
✓ Light oil systems
✓ OEM machinery
✓ Industrial automation
High Flow 12 Bar Zero-Rated Design
The SHAKO SPU220A-04H combines corrosion-resistant 316 stainless steel construction with a 13mm zero-rated assisted-lift diaphragm and higher-power 18.5W solenoid operator.
Its 13mm orifice provides approximately 35 L/min water flow at 1 Bar pressure differential while retaining operation from zero positive pressure.
The principal difference between the SPU220A-04H and standard SPU220A-04 is the higher-power operator. The 18.5W version increases maximum positive operating pressure from 7 Bar AC / 5 Bar DC to 12 Bar with either AC or DC power.
This makes the SPU220A-04H particularly useful where zero-rated operation, stainless steel construction and higher pressure capability are required within the same 1/2" valve.
For AdBlue / DEF service, specify EPDM seals. For RO and demineralised water, alternative shading-ring configurations are available where copper contact with the process media is undesirable.
Ordering Information
Select the required seal material, thread and voltage before adding the valve to your basket.
Available options include:
✓ 1/2" BSP thread
✓ Optional NPT or Rc threads
✓ FKM seals as standard
✓ NBR, EPDM or HNBR options
✓ EPDM configuration for AdBlue
✓ 18.5W high-power operator
✓ 12 Bar AC/DC configuration
✓ RO / pure water configuration
✓ High-temperature configuration
✓ Degreased configuration
✓ AC and DC voltage options
For AdBlue / DEF / AUS 32, select the EPDM seal configuration.
For RO or demineralised water, consider the silver shading-ring or no-shading-ring operator configuration.
For oxygen service, specify the appropriate degreased configuration and confirm application requirements before ordering.
Where only 7 Bar AC / 5 Bar DC is required, the standard 15W SPU220A-04 provides the lower-power alternative.
Related Products & Categories
Technical Specification
Brand: Shako Co Ltd
Model: SPU22004H
Width: 48.00 mm
Height: 101.00 mm
Depth: 66.50 mm
Weight: 1.00 kg
Valve / Product Type: Solenoid Valve
Body Material: Stainless Steel
Voltage: 110vAC, 110vDC, 12vDC, 200vDC, 230VAC, 24vAC, 24vDC, 36vAC, 48vAC, 48vDC
Port Size: 1/2 thread
Function: 2/2 Failsafe Closed
Operation: Assisted Lift
Pressure: 7.5 Bar, 8 Bar, 8.5 Bar, 9 Bar, 10 Bar, 12 Bar
Seals: EPDM, HNBR, NBR, FKM (Viton)
Approvals:: ATEX Exm, IP65
Media: Air, Fluid (Non Aggressive), Fluid (Slight Acid/Alkali), Gases (Non Aggressive), Gases (Slight Acid/Alakli), Oils + Fuels 50cSt Max, Vacuum (Low), Vacuum (Medium), Water, Water (RO/Pure/Demin)
Options required: Degreased, Shading Ring - without, Shading Ring - Silver
Orifice: 13mm
Found in these Categories
- 1/2" Stainless solenoid valves
- Stainless Steel 2/2 Normally Closed - Direct Acting
- Air Solenoid Valves
- Water Solenoid Valves
- Light Oil Solenoid Valves
- Vacuum Solenoid Valves
- Acid & Alkali Solenoid Valves
- Fuel Solenoid Valves
- RO Water Solenoid Valves
- 1/2 Inch Solenoid Valves
- 10 Bar Solenoid Valves
- 2/2 Normally Closed Solenoid Valves
- 2/2 Normally Closed - Zero Rated
- General Purpose Solenoid Valves
- Stainless Steel Solenoid Valves
1/2 Stainless Steel Solenoid Valve 0-12 Bar 2/2 N/Closed
£135.07 incl. VAT £112.56 ex. VAT
-17% Was £161.77 incl. VAT