Key Features

3/2 Way Normally Open
Fail-Open on Power Loss
Direct Acting Operation
Zero Pressure Differential
Pressure Range 0 to 12 Bar
Vacuum Capable to 10⁻² Torr
1/4" & 3/8" BSP Ports
Optional NPT or Rc Threads
1.3mm to 3mm Orifice Options
Up to 2.5 L/min Water Flow
Fast 20–50ms Opening Time
Compact Brass Valve Body
Stainless Steel Internals
NBR Seals as Standard
FKM, EPDM & FFKM Options
Air, Water, Gas & Vacuum
Fluids up to 50 cSt
Media Temperatures to +160°C
15W Nass Magnet Coil
Class H 180°C Insulation
100% Continuous Duty
Optional ATEX Ex m Coil

Datasheets

Description

1/4"–3/8" Brass 3/2 Normally Open Solenoid Valve – Sunwell RT

The Sunwell RT06 and RT10 Series are compact 3/2 way normally open brass solenoid valves designed for reliable control of air, water, gases, vacuum, light oils and compatible low-viscosity fluids.

Using a direct acting plunger design, the RT Series operates from zero pressure differential and provides normally open, fail-open operation. When the coil is energised the valve switches flow between its three ports, returning automatically to its normal position when electrical power is removed.

Available with 1/4" or 3/8" BSP connections, five orifice configurations and working pressures up to 12 Bar, the RT Series combines compact dimensions with fast switching and flexible seal selection for pneumatic, process control and OEM applications.

Valve Function & Operation

Function: 3/2 Way Normally Open

Operation: Direct Acting

Fail Position: Normally Open when de-energised

The direct acting design allows the RT06 and RT10 to operate reliably from 0 Bar without requiring a minimum pressure differential.

This makes the valve particularly suitable for pneumatic circuits, vacuum applications, low-pressure systems and other duties where a conventional pressure-assisted valve may not operate reliably.

Ports & Connections

Port Sizes:

✓ RT06 – 1/4" BSP

✓ RT10 – 3/8" BSP

Optional Threads:

✓ NPT

✓ Rc / PT

The RT Series provides three ports for switching between the inlet, outlet and exhaust or alternative flow connection.

Pressure & Flow Performance

Working Pressure: 0–12 Bar

Maximum working pressure depends on the selected orifice:

✓ 1.3mm – Up to 12 Bar

✓ 1.6mm – Up to 10 Bar

✓ 2.0mm – Up to 8 Bar

✓ 2.5mm – Up to 6 Bar

✓ 3.0mm – Up to 4 Bar

This allows smaller orifices to be selected for higher-pressure duties, while larger configurations provide increased flow where maximum pressure is lower.

Orifice & Flow

Available Orifice Sizes:

✓ 1.3mm

✓ 1.6mm

✓ 2.0mm

✓ 2.5mm

✓ 3.0mm

Water Flow: 1.33 to 2.5 L/min

Flow figures are based on water with a 1 Bar pressure differential.

Vacuum Performance

Vacuum Capability: Down to 10⁻² Torr

The zero-rated direct acting mechanism makes the RT Series particularly useful for vacuum and low-pressure switching applications.

Response Time

Opening Time: 20–50ms

Closing Time: 40–100ms

Mounting Position: Any position

Maximum Media Viscosity: 50 cSt

Construction & Materials

Body: Brass

Tube: Stainless Steel

Internal Components: Stainless Steel

Coil: Moulded resin

The combination of brass body and stainless steel operating components provides a robust compact valve suitable for industrial and OEM installations.

Seal & Media Compatibility

NBR – Standard

FKM / Viton (V) – Optional

EPDM (J) – Optional

FFKM / Kalrez (Z) – Optional

Suitable media include:

✓ Compressed air

✓ Water

✓ Vacuum

✓ Light oils

✓ Compatible gases

✓ Compatible low-viscosity fluids

Maximum Media Viscosity: 50 cSt

Final media compatibility depends on the selected seal material, temperature and compatibility with the brass and stainless steel construction.

Temperature Range

Ambient Temperature: -10°C to +50°C

NBR: -5°C to +80°C

EPDM: -10°C to +145°C

FKM / Viton: -10°C to +145°C

FFKM / Kalrez: -20°C to +160°C

Coil & Electrical Specification

The RT Series uses the Nass Magnet System 13/30 solenoid operator.

Coil: Nass Magnet 22003

Power DC: 15 Watt

Power AC: 23VA Inrush / 17VA Holding

Insulation: Class H 180°C

Duty Cycle: 100% Continuous Duty

Connection: DIN 43650A

Protection: IP65 with connector included

Voltage Options

DC:

✓ 12V DC

✓ 24V DC

✓ 48V DC

✓ 110V DC

✓ 220V DC

AC 50/60Hz:

✓ 12V AC

✓ 24V AC

✓ 36V AC

✓ 48V AC

✓ 110V AC

✓ 230V AC

✓ 380V AC

ATEX Hazardous Area Option

An optional Nass Magnet encapsulated ATEX solenoid operator is available for hazardous-area applications.

Power: 10.1 Watt

Certification:

Ex mb IIC T4 Gb

Ex mb tb IIIC T130°C Db

Temperature Class: T4 / T130°C

Suitable for hazardous gas and dust applications when correctly specified and installed as part of a compatible valve assembly.

Typical Applications

✓ Pneumatic control systems

✓ Compressed air automation

✓ Vacuum systems

✓ Water control equipment

✓ Gas control systems

✓ Light oil applications

✓ Pilot control circuits

✓ Process automation

✓ OEM machinery

✓ Packaging equipment

✓ Laboratory equipment

✓ Hazardous area applications

Compact 3/2 Direct Acting Design

The Sunwell RT Series combines three-way switching with true zero-pressure direct acting operation in a compact brass valve.

Unlike pressure-assisted designs, the RT does not rely on system pressure to switch. This provides reliable operation at zero and low pressure and makes it particularly useful for vacuum, pneumatic pilot control and specialist OEM applications.

The choice of five orifice sizes allows the valve to be configured according to the required balance between operating pressure and flow.

Ordering Information

Select the required port size:

✓ RT06 – 1/4"

✓ RT10 – 3/8"

Then select:

✓ Orifice size

✓ NBR, EPDM, FKM or FFKM seals

✓ BSP, NPT or Rc thread

✓ Required AC or DC voltage

✓ Standard or ATEX operator

Related Products & Categories

Brass 3/2 Way Solenoid Valves

Stainless 3/2 Way Solenoid Valves

2, 3 & 5 Way Air Control Valves

View Technical Specification

Technical Specification

Brand: AAA Enterprise (Sunwell)

Model: RT

Width: 31.00 mm

Height: 111.50 mm

Depth: 49.00 mm

Weight: 0.75 kg

Valve / Product Type: Solenoid Valve

Body Material: Brass

Voltage: 110vAC, 110vDC, 12vDC, 200vDC, 230VAC, 24vAC, 24vDC, 36vAC, 380vAC, 48vAC, 48vDC

Port Size: 1/4 thread, 3/8 thread

Function: 3/2 Normally Open

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, 8.5 Bar, 9 Bar, 10 Bar, 12 Bar

Seals: EPDM, FFKM (Kalrez), NBR, FKM (Viton)

Approvals:: ATEX Exm, IP65

Media: Air, Fluid (Non Aggressive), Gases (Non Aggressive), Oils + Fuels 50cSt Max, Steam, Vacuum (Low), Water

Options required: Mounting Holes

Orifice: 1.3mm, 1.6mm, 2.0mm, 2.5mm, 3.0mm

Found in these Categories

1/4-3/8 Brass solenoid valve 0-12 Bar 3/2 way Normally Open

£72.00 incl. VAT £60.00 ex. VAT

-35% Was ~~£110.78~~ incl. VAT

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Brand: AAA Enterprise (Sunwell)

Model: RT

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Read Full Description

Key Features

Datasheets

Description

1/4"–3/8" Brass 3/2 Normally Open Solenoid Valve – Sunwell RT

Valve Function & Operation

Ports & Connections

Pressure & Flow Performance

Orifice & Flow

Vacuum Performance

Response Time

Construction & Materials

Seal & Media Compatibility

Temperature Range

Coil & Electrical Specification

Voltage Options

ATEX Hazardous Area Option

Typical Applications

Compact 3/2 Direct Acting Design

Ordering Information

Related Products & Categories

Technical Specification

Found in these Categories

1/4-3/8 Brass solenoid valve 0-12 Bar 3/2 way Normally Open

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