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

Datasheets

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 from 0 Pressure

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

Found in these Categories

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

Name: 1/8→1/4 Stainless Solenoid Valve 0-8 Bar 3/2 Normally Closed
Brand: AAA (Sunwell)
SKU: ST03,ST06
Price: 49.18 GBP
Availability: OutOfStock