Key Features
✓ 2/2 way normally open operation
✓ Failsafe open
✓ Fits Shako 220 Series valves
✓ Converts compatible 220 Series NC valves to NO
✓ System 13 armature design
✓ M20 × 1mm mounting thread
✓ 14.5mm armature tube diameter
✓ 430F stainless steel armature
✓ 304 stainless steel tube
✓ 302 stainless steel spring
✓ Copper shading ring as standard
✓ No shading ring option for aggressive media
✓ NBR, FKM, EPDM or HNBR seals
✓ Suitable for System 13/30 and 13/36 coils
✓ Coil power levels 3, 4 and 5
✓ Spring-balanced normally open design
Description
Shako 220 Normally Open Solenoid Valve Armature Assembly – System 13
Shako 2/2 way normally open stainless steel armature assembly designed for 220 Series brass and stainless steel solenoid valves using the System 13, M20 × 1mm mounting.
This second-generation, spring-balanced armature assembly provides failsafe open operation and can also be used to convert compatible Shako 220 Series normally closed solenoid valves to normally open operation.
Available with a standard copper shading ring for AC or DC operation, or without a shading ring for DC-only applications involving aggressive media where copper is unsuitable.
Seal options include NBR, FKM (Viton), EPDM and HNBR.
Normally Open Operation
This armature assembly provides 2/2 way normally open (failsafe open) operation.
With the solenoid coil de-energised, the valve remains open. Energising the coil operates the armature to close the valve.
The assembly can also be used to convert compatible Shako 220 Series brass or stainless steel normally closed solenoid valves into normally open valves.
Construction
Armature: 430F stainless steel
Armature Tube: 304 stainless steel
Spring: 302 stainless steel
Tube Diameter: 14.5mm
Mounting Thread: M20 × 1.0mm
The stainless steel construction provides good corrosion resistance for industrial fluid, air and process applications.
Shading Ring Options
Copper Shading Ring – Standard
Suitable for AC and DC applications where the controlled media is compatible with copper.
The shading ring helps maintain the magnetic field during AC operation, reducing armature vibration and the characteristic buzzing associated with alternating current solenoids.
Without Shading Ring
Available for aggressive or corrosive media where copper is unsuitable.
This configuration is for DC coil operation only.
Seal Options & Temperature
NBR – Blank identification
Temperature: -15°C to +80°C
FKM / Viton – Green identification
Temperature: -10°C to +180°C
EPDM – White identification
Temperature: -5°C to +130°C
HNBR
Temperature: -40°C to +150°C
Actual operating temperature must also remain within the limits of the complete valve, coil and controlled media.
System 13 Coil Compatibility
Designed for System 13/30 and System 13/36 solenoid coils.
Suitable Coil Power Levels: 3, 4 and 5
Mounting Thread: M20 × 1mm
Armature Tube Diameter: 14.5mm
This makes the assembly suitable for Shako 220 Series valves and other compatible solenoid valves using the same System 13 M20 × 1mm armature interface.
Second Generation Spring-Balanced Design
The second-generation Shako normally open armature uses a lighter, spring-balanced three-piece design.
According to Shako, this design reduces solenoid coil operating temperature by more than 20°C when energised, helping reduce thermal stress on the coil and potentially extending service life.
Valve Compatibility
Suitable for genuine Shako brass and stainless steel 220 Series solenoid valves using the System 13 M20 × 1mm armature mounting.
Designed for Shako normally open, zero-rated assisted-close valves, and suitable for converting compatible 220 Series normally closed valves to normally open operation.
Also suitable for other compatible solenoid valves using the System 13, M20 × 1mm mounting, subject to valve design and dimensional compatibility.
Typical Applications
✓ Shako 220 Series valve repair
✓ Normally open solenoid valve servicing
✓ NC to NO valve conversion
✓ Water control
✓ Compressed air systems
✓ Industrial fluids
✓ Process control
✓ Aggressive media with no-copper DC option
✓ Replacement System 13 armature assemblies
Technical Specification
Manufacturer: Shako
Product Type: Solenoid valve armature assembly
Function: 2/2 way normally open
Failsafe Position: Open
Armature: 430F stainless steel
Tube: 304 stainless steel
Spring: 302 stainless steel
Tube Diameter: 14.5mm
Mounting Thread: M20 × 1.0mm
Shading Ring: Copper standard
Alternative: Without shading ring for DC/aggressive media
Seal Options: NBR, FKM (Viton), EPDM, HNBR
NBR Temperature: -15°C to +80°C
FKM Temperature: -10°C to +180°C
EPDM Temperature: -5°C to +130°C
HNBR Temperature: -40°C to +150°C
Coil System: System 13/30 & 13/36
Coil Power Levels: 3, 4 & 5
Valve Series: Shako 220 brass & stainless steel
Conversion: Compatible 220 Series normally closed to normally open
Helpful Hint
For aggressive or corrosive media that are incompatible with copper, choose the armature without a copper shading ring and use a suitable DC coil.
Where only an AC electrical supply is available, a suitable rectified connector may provide a DC output to a compatible DC coil.
Related Products & Categories.
Technical Specification
Brand: Connexion
Model: 220308NO
Width: 14.60 mm
Height: 22.00 mm
Depth: 58.00 mm
Weight: 0.10 kg
Valve / Product Type: Solenoid Valve
Body Material: Stainless Steel
Function: 2/2 Failsafe Open
Operation: Assisted Lift from 0 Pressure
Seals: EPDM, FKM (Viton), NBR
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
Spares (Coils, Connectors, Seals): Armature Assembly
Found in these Categories
Shako 220 Normally Open System 13 Armature Assembly
£34.14 incl. VAT £28.45 ex. VAT
-32% Was £50.16 incl. VAT