Key Features

✓ 3/2 Way Normally Closed
✓ Direct Acting Operation
✓ Zero Pressure Differential
✓ Pressure Range 0 to 8 Bar
✓ Vacuum Capable to 10⁻¹ Torr
✓ 1/8" & 1/4" BSP Ports
✓ Optional NPT & Rc Threads
✓ 1mm to 2.5mm Orifice Options
✓ Up to 2.57 L/min Water Flow
✓ AISI 303 Stainless Steel Body
✓ Stainless Steel Internals
✓ NBR, FKM & EPDM Seal Options
✓ FFKM High Temperature Option
✓ Air, Water, Gas & Vacuum
✓ Fluids up to 50 cSt
✓ Copper or Silver Shading Ring
✓ 6W or 6.8W Nass Magnet Coil
✓ Class F 155°C Insulation
✓ 100% Continuous Duty
✓ IP65 With DIN Connector
✓ AC & DC Voltage Options
✓ Optional ATEX / IECEx Coil

Description

1/8" & 1/4" Stainless Steel 3/2 Way Solenoid Valve 0–8 Bar Normally Closed


The ST03 and ST06 Series are compact direct acting 3/2 way normally closed stainless steel solenoid valves designed for precise control of air, water, vacuum, gases and low viscosity fluids. Manufactured from AISI 303 stainless steel with stainless steel internal components, these miniature valves are ideal for analytical equipment, medical systems, OEM machinery and industrial automation where corrosion resistance and reliability are essential.

Available with a wide range of orifice sizes, seal materials and Nass Magnet coils, the ST Series offers vacuum capability together with operating pressures up to 8 Bar. Optional ATEX Ex m coils are available for hazardous area applications.

Valve Function & Operation

Function: 3/2 Way Normally Closed
Operation: Direct Acting

Ports & Flow Performance

Port Sizes: 1/8" & 1/4" BSP
Optional NPT or Rc threads
Working Pressure: Vacuum (10⁻¹ Torr) to 8 Bar

Orifice Sizes
1.0mm
1.3mm
1.6mm
2.0mm
2.5mm
Kv Flow Factor: 0.42 to 2.57 L/min
(Based on water with 1 Bar pressure drop)

Construction & Materials

Body: AISI 303 Stainless Steel
Internal Components: Stainless Steel
Shading Ring: Copper (Standard)
Optional Silver

Seal Options
NBR
FKM
EPDM
FFKM (Kalrez)

Suitable Media

Air
Water
Vacuum
Light oils
Neutral gases
Low viscosity fluids (maximum 50 cSt)

Temperature Range

Ambient Temperature: -15°C to +50°C
Media Temperature: NBR: -5°C to +80°C
EPDM: -10°C to +145°C
FKM: -10°C to +145°C
FFKM: -20°C to +145°C

Coil & Electrical Specification

Coil Option 1
Nass Magnet System 8/22
6 Watt
Class F (155°C)
DIN 43650B
100% Continuous Duty

Coil Option 2
Nass Magnet System 8/30
6.8 Watt
Class F (155°C)
DIN 43650A
100% Continuous Duty
Protection: IP65 (Connector Included)

Available Voltages

12, 24 & 48V DC
24, 48, 110 & 230V AC (50/60Hz)

ATEX / IECEx Coil Option

Optional Nass Magnet System 8/22 explosion-protected solenoid operator available for hazardous area applications.
✓ Ex mb IIC T4 Gb
✓ Ex mb tb IIIC T130°C Db
✓ Suitable for Zone 1 gas and Zone 21 dust hazardous areas
✓ ATEX Category 2G / 2D
✓ Gas Group IIC / Dust Group IIIC
✓ Protection rating: IP65
✓ 100% continuous duty
✓ Ambient temperature: -20°C to +50°C single valve
✓ ATEX Certificate: PTB 00 ATEX 2001 X
✓ IECEx Certificate: IECEx PTB 05.0006X
✓ ATEX Directive: 2014/34/EU

Applications

✓ Industrial automation
✓ Analytical equipment
✓ Medical equipment
✓ Laboratory systems
✓ Pneumatic control
✓ Water treatment
✓ Vacuum systems
✓ Chemical process equipment
✓ Hazardous area installations (ATEX option)

Related Products


3/2 Way Solenoid Valves

Solenoid Coils

DIN43650 Connectors
View Technical Specification

Technical Specification

Brand: AAA Enterprise (Sunwell)

Model: ST03,ST06

Width: 25.00 mm

Height: 61.00 mm

Depth: 25.00 mm

Weight: 0.28 kg

Valve / Product Type: Solenoid Valve

Body Material: Stainless Steel

Voltage: 110vAC, 12vDC, 230VAC, 24vAC, 24vDC, 48vAC, 48vDC

Port Size: 1/4 thread, 1/8 thread

Function: 3/2 Normally Closed

Operation: Direct Acting

Pressure: 0.02 Bar (20 mBar), 0.1 Bar (100 mBar), 0.2 Bar (200 mBar), 0.3 Bar (300 mBar), 0.4 Bar (400 mBar), 0.5 Bar (500 mBar), 0.6 Bar (600 mbar), 0.7 Bar (700 mBar), 0.8 Bar (800 mBar), 1 Bar, 1.2 Bar, 1.3 Bar, 1.4 Bar, 1.5 Bar, 1.6 Bar, 2 Bar, 2.5 Bar, 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

Seals: EPDM, FFKM (Kalrez), 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), Water, Water (RO/Pure/Demin)

Options required: Mounting Bracket, Mounting Holes, Shading Ring - Silver

Orifice: 1.0mm

1/8→1/4 Stainless Solenoid Valve 0-8 Bar 3/2 Normally Closed

£49.18 incl. VAT £40.98 ex. VAT

-30% Was £70.25 incl. VAT

Brand: AAA Enterprise (Sunwell)

Model: ST03,ST06

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