1/4" & 3/8" Stainless Steel Solenoid Valve 0–20 Bar Normally Open
The RQ08 and RQ10 Series are compact direct acting 2/2 way normally open stainless steel solenoid valves designed for controlling air, water, vacuum, RO water, steam, gases and low viscosity fluids. Manufactured from AISI 303 stainless steel with stainless steel internal components, these valves provide excellent corrosion resistance together with operating pressures up to 20 Bar.
Available with multiple orifice sizes, seal materials and Nass Magnet Class H coils, the RQ Series is ideal for industrial automation, process control, water treatment, vacuum systems and OEM machinery. Optional ATEX Ex m certified coils are available for hazardous area applications.
Features
✓ Direct acting 2/2 way normally open valve
✓ No minimum operating pressure
✓ 1/4" & 3/8" BSP ports
✓ Optional NPT thread
✓ AISI 303 stainless steel body
✓ Stainless steel internal components
✓ Copper or optional silver shading ring
✓ Operating pressure up to 20 Bar
✓ Vacuum capability to 10⁻² Torr
✓ IP65 connector included
✓ Optional ATEX Ex m certified coil
Valve Function & Operation
Function: 2/2 Way Normally Open
Operation: Direct Acting
Ports & Flow Performance
Port Sizes: 1/4" & 3/8" BSP
Optional NPT thread
Working Pressure: 0–20 Bar
(According to orifice size and coil)
Vacuum 10⁻² Torr to 10 Torr
(According to orifice selection)
Orifice Sizes
2.0mm
2.5mm
3.0mm
4.0mm
5.0mm
5.5mm
Kv Flow Factor: 3.0 to 15.8 L/min
(Based on water with 1 Bar pressure drop)
Opening Time: 10–30ms
Closing Time: 20–60ms
Construction & Materials
Body: AISI 303 Stainless Steel
Internal Components: AISI 304 Stainless Steel
430FR Stainless Steel Armature
Shading Ring: Copper (Standard)
Optional Silver (recommended for RO & pure water)
Seal Options
NBR
EPDM (up to 5mm orifice)
FKM (up to 5mm orifice)
PTFE (up to 4mm orifice)
Optional FFKM (Kalrez®)
Suitable Media
Air
Water
RO water
Vacuum
Steam
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
FKM: -10°C to +160°C
EPDM: -10°C to +145°C
PTFE: -20°C to +185°C
FFKM (Kalrez®): -20°C to +185°C
Coil & Electrical Specification
Coil Option 1
Nass Magnet System 13/30 (22003)
15 Watt DC / 19.5VA AC
Class H (180°C)
DIN 43650A
100% Continuous Duty
Coil Option 2
Nass Magnet System 13/36 (22005)
18.5 Watt DC / 23VA AC
Class H (180°C)
DIN 43650A
100% Continuous Duty
Protection
IP65 (Connector Included)
Available Voltages
DC: 12, 24, 48, 110 & 220V
AC: 12, 24, 48, 110, 230 & 380V (50/60Hz)
ATEX Coil Option
Optional Nass Magnet 22003EX encapsulated coil.
Power 10 Watt
Certification
Ex mb IIC T4 Gb
Ex mb tb IIIC T130°C Db
Suitable for Zone 21 & 22 hazardous area applications.
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, 8.5 Bar, 9 Bar, 10 Bar, 12 Bar, 13 Bar, 14 Bar, 15 Bar, 16 Bar, 17 Bar, 18 Bar, 20 Bar
