Key Features

DN10 Coaxial Solenoid Valve
2/2 Way Normally Closed
Normally Open Version Available
Direct Acting Operation
Zero Differential Pressure
0–64 Bar Operating Pressure
16 Bar Reverse Pressure
Kv 2.5 m³/h Flow Capacity
1/4", 3/8", 1/2" or 3/4" BSP
Brass or Stainless Steel Body
FKM & PTFE Seals
Fluids Up To 1000 cSt
-10°C to +100°C Media
24VDC or 230VAC
100% Continuous Duty
IP65 With Connector Fitted
TÜV & DVGW Approved
Vacuum Service Option
Oxygen Service Options
Oil & Grease-Free Option
Manual Override Option
Free UK Delivery Available

Datasheets

Description

DN10 Coaxial Solenoid Valve 0-64 Bar – RSG 27110

The RSG 27110 is a compact DN10 direct acting coaxial solenoid valve designed for reliable control of liquids, oils, gases, vacuum and compatible industrial process media from 0 to 64 Bar. Its pressure-balanced coaxial construction requires no minimum differential pressure, providing dependable switching from zero pressure through to demanding high-pressure applications.

Unlike conventional pilot-operated diaphragm valves, the RSG 271 Series uses a coaxial plunger arrangement with the actuator positioned around the fluid flow path. This design is particularly suited to high-pressure industrial systems, test equipment, gases, oils and process fluids with viscosities up to 500 cSt.

The DN10 version provides a Kv flow coefficient of 2.5 m³/h with standard 1/4", 3/8", 1/2" or 3/4" BSP connections. The manufacturer specifies 0–64 Bar operating pressure with back-pressure sealing up to 16 Bar in the reverse A→P direction.

Valve Function & Operation

The RSG 27110 is a 2/2 way direct acting coaxial valve available in either normally closed or normally open configurations.

271A10 – Normally Closed

The valve remains closed without electrical power and opens when the solenoid is energised.

271B10 – Normally Open

The valve remains open without electrical power and closes when energised.

Because the valve is direct acting, operation does not depend upon inlet pressure or a minimum pressure differential across the valve. This provides reliable switching from 0 Bar through to 64 Bar.

DN10 Ports & Connections

The standard DN10 RSG 27110 is available with:

✓ G1/4 BSP

✓ G3/8 BSP

✓ G1/2 BSP

Optional connection configurations include:

✓ G3/4 BSP

✓ NPT Threads

✓ Special Connections

Flanged configurations are available on larger sizes within the RSG 271/272 coaxial valve family.

Pressure & Performance

Operating Pressure: 0 to 64 Bar

Forward Flow P→A: Maximum 64 Bar

Reverse Flow A→P: Maximum 16 Bar

Nominal Diameter: DN10

Kv Flow Coefficient: 2.5 m³/h

Water Flow: Approx. 42 L/min @ 1 Bar ΔP

Weight – Brass Version: 1.7kg

The RSG 27110 therefore combines true zero-pressure operation with considerably greater pressure capability than the corresponding 20 Bar RSG 269 and 40 Bar RSG 270 models.

Flow Capacity

The DN10 valve has a Kv flow coefficient of 2.5 m³/h, equivalent to approximately 42 L/min water flow at a 1 Bar pressure differential.

The RSG 271 range provides:

DN10 – Kv 2.5 m³/h

DN15 – Kv 5.2 m³/h

DN20 – Kv 7.0 m³/h

DN25 – Kv 12.3 m³/h

DN32 – Kv 20.0 m³/h

Coaxial Valve Design

The RSG 271 Series uses a characteristic coaxial construction, with the solenoid surrounding the central plunger and fluid path.

The principal internal components comprise the adapter fittings, valve seat, plunger, solenoid, spring and twin PTFE rod seals. The actuator force acts directly along the same axis as the fluid flow, allowing operation independently of minimum differential pressure.

This design is particularly useful for:

✓ Zero-Pressure Applications

✓ High-Pressure Applications

✓ High-Pressure Gases

✓ Oils & Lubricants

✓ Compact Machinery Installations

✓ Bidirectional Pressure Duties

✓ Test & Process Equipment

Higher Viscosity Fluids

The RSG 27110 is suitable for compatible fluids with viscosities up to 1000 cSt.

This makes the coaxial design particularly useful for applications involving:

✓ Hydraulic Oils

✓ Lubricating Oils

✓ Process Oils

✓ Viscous Process Fluids

✓ Industrial Process Liquids

The direct acting coaxial construction avoids reliance on the small pilot passages used by conventional servo-operated diaphragm valves, making it particularly useful where higher-viscosity media can create operational problems for conventional valve designs.

Construction & Materials

Threaded body materials are available in:

✓ Brass

✓ AISI 303 Stainless Steel

✓ AISI 316 Stainless Steel

Flanged versions within the range can also be manufactured using galvanised steel, nickel-plated steel or AISI 316 stainless steel.

Standard Seal Construction

Static Seal: FKM

Dynamic Seals: PTFE

Valve Seat: FKM or PTFE

Optional seal configurations include:

✓ NBR

✓ EPDM

The appropriate body and sealing materials can be selected according to the fluid, gas, temperature and service requirements.

Water Service Seal Option

For demanding water applications, UHMW Polyethylene seals are available with a maximum service temperature of +80°C.

UHMW Polyethylene provides excellent wear resistance and low friction. The dynamic sealing arrangement helps strip limescale and debris from the sealing surface during operation.

This makes the configuration particularly useful where water quality or deposits could reduce the service life of conventional sealing arrangements.

Gas Service Seal Option

For demanding gaseous applications, Fluoroloy® A21 seals are available with a maximum service temperature of +80°C.

Fluoroloy A21 provides low friction, excellent wear characteristics and broad chemical compatibility, making it suitable for appropriately specified industrial gas applications.

Increased Leak-Tightness Version

An increased leak-tightness configuration to 10⁻⁵ mbar·L/sec is available for demanding gas and vacuum applications.

This specialist configuration includes:

✓ Oil & Grease-Free Cleaning

✓ Special Valve Seat Treatment

✓ Special Seal Components

✓ Helium Leak-Tightness Testing

Media Compatibility

Typical applications include:

✓ Water

✓ Hydraulic Oils

✓ Lubricating Oils

✓ Viscous Process Fluids

✓ Compressed Air

✓ Industrial Gases

✓ Process Liquids

✓ Cooling Fluids

✓ Compatible Chemicals

For aggressive chemicals or unusual process fluids, compatibility should be confirmed against all wetted materials before ordering.

Special Service Options

The RSG 271 Series can be configured for specialist media and process requirements in addition to standard industrial fluid applications.

Available configurations include:

✓ Water Service Seal Options

✓ Gas Service Seal Options

✓ Oxygen Service Options

✓ Vacuum Service Option

✓ High Leak-Tightness Version

✓ Oil & Grease-Free Construction

Different body materials, seat seals and valve configurations can be selected according to the application and required media compatibility.

For oxygen, vacuum, gas or applications requiring particularly low leakage rates, the required service should be specified when ordering to ensure the correct valve configuration is supplied.

Increased Leak-Tightness Version

An increased leak-tightness configuration to 10⁻⁵ mbar·L/sec is available for demanding gas and vacuum applications.

This specialist configuration includes:

✓ Oil & Grease-Free Cleaning

✓ Special Valve Seat Treatment

✓ Special Seal Components

✓ Helium Leak-Tightness Testing

This option is particularly useful where standard industrial valve leakage performance is insufficient for the application.

Vacuum Service

A dedicated vacuum version is available as mechanical option 12.

This allows the RSG 271 Series to be configured specifically for vacuum systems and equipment requiring reliable direct acting valve operation at very low absolute pressures.

Oxygen & Clean Service

Oil and grease-free construction is available as mechanical option 16.

Special configurations can therefore be supplied for applications where cleanliness of the valve and wetted components is critical.

For oxygen service, the correct materials, cleaning specification and application requirements should be confirmed when ordering.

Temperature

Media Temperature: -10°C to +100°C

Ambient Temperature: -10°C to +50°C

Water Service Seals: Up to +80°C

Gas Service Seals: Up to +80°C

Coil & Electrical Specification

Electrical Duty: 100% ED

Protection: IP65 with plug fitted

Connection: DIN EN 175301-803 Form A

Voltage Tolerance: ±10%

Mounting Position: Any Position

The valve may be installed in any mounting position, providing considerable flexibility when integrating the compact 27110 into machinery, test rigs and process equipment.

Voltage Options

Standard manufacturer voltage options are:

✓ 24VDC

✓ 230VAC 50Hz

✓ Special Voltages On Request

For AC operation, the electrical connector incorporates a rectifier.

DN10 power consumption:

24VDC – 44 Watts

230VAC 50Hz – 53 Watts

Energy Saving PWM Connector Option

The 24VDC version can be fitted with an optional DIN Form A PWM power-reduction connector.

This initially supplies the power required for reliable valve actuation before reducing the electrical holding power after the valve has switched.

Potential benefits include:

✓ Reduced Holding Power

✓ Lower Coil Temperature

✓ Reduced Energy Consumption

✓ Lower Enclosure Temperature

✓ Extended Solenoid Service Life

✓ Improved Thermal Stability

✓ Ideal For Continuous Duty

Other PWM voltages can be supplied according to application requirements.

Optional Features & Accessories

The RSG 271 Series can be configured with:

✓ Manual Override

✓ E1 Position Indication

✓ E2 Position Indication

✓ Inductive Position Switches

✓ LED Position Indication

✓ LED DIN Connector

✓ Mounting Brackets

✓ PWM Power Reduction Connector

✓ IP65 Terminal Box

✓ M12x1 Electrical Connector

✓ Vacuum Configuration

✓ Oil & Grease-Free Construction

✓ Special Connections

Position Indication

Optional position indication is available for applications requiring electrical confirmation of valve position.

E1 – Single Position Indication

E2 – Double Position Indication

Open and/or closed position monitoring can therefore be incorporated into automated machinery, process control systems and safety monitoring circuits.

Typical Applications

✓ High Pressure Liquids

✓ High Pressure Gases

✓ Pressure Testing Equipment

✓ Test Rigs & Process Skids

✓ Hydraulic Systems

✓ Lubrication Systems

✓ Compressed Air Systems

✓ Industrial Gas Systems

✓ Vacuum Systems

✓ Process Engineering

✓ Industrial Automation

✓ Water Treatment Equipment

✓ Chemical Processing Equipment

✓ Laboratory Equipment

✓ OEM Machinery

✓ Zero Pressure Applications

Why Choose a Coaxial Valve?

A conventional pilot-operated solenoid valve requires sufficient pressure differential to lift its diaphragm or piston. This can make it unsuitable for zero-pressure systems, closed-loop circuits and applications where pressure can equalise across the valve.

The RSG 27110 is direct acting from 0 Bar, so switching does not depend upon pressure differential.

Its compact DN10 coaxial construction combines zero-pressure operation with pressure capability up to 64 Bar, making it particularly suitable for high-pressure machinery, gas systems, process equipment and test applications where compact size and dependable switching are important.

Available Versions

271A10 – Normally Closed

271B10 – Normally Open

Standard DN10 connections:

✓ 1/4" BSP

✓ 3/8" BSP

✓ 1/2" BSP

Standard voltages:

✓ 24VDC

✓ 230VAC 50Hz Rectified

RSG Coaxial Valve Pressure Ranges

RSG 269 Series – up to 20 Bar

RSG 270 Series – up to 40 Bar

RSG 271 Series – up to 64 Bar

RSG 272 Series – up to 100 Bar

The RSG 271 Series bridges the gap between the 40 Bar RSG 270 and 100 Bar RSG 272 ranges, providing direct acting coaxial valve operation from zero pressure through to 64 Bar.

Related Products & Categories

RSG 269 Series Coaxial Valves (0-20 Bar)

RSG 270 Series Coaxial Valves (0-40 Bar)

RSG 271 Series Coaxial Valves (0-64 Bar)

RSG 272 Series Coaxial Valves (0-100 Bar)

Air Actuated Coaxial Valves

View Technical Specification

Technical Specification

Brand: RSG regel-und steuergeräte gmbh

Model: 27110

Width: 50.00 mm

Height: 93.50 mm

Depth: 159.50 mm

Weight: 2.00 kg

Valve / Product Type: Coaxial Valve, Solenoid Valve

Body Material: Brass, Stainless Steel

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

Port Size: 1/2 thread, 1/4 thread, 3/4 thread, 3/8 thread

Function: 2/2 Failsafe Closed, 2/2 Failsafe Open

Operation: Direct Acting from 0 Pressure

Pressure: 50 Bar, 60 Bar, 64 Bar

Seals: NBR, PTFE (Teflon), FKM (Viton)

Approvals:: IP65

Media: Air, Fluid (Non Aggressive), Fluid (Slight Acid/Alkali), Gases (Non Aggressive), Oils + Fuels 50cSt Max, Fluid Thick 51>1000cSt

Orifice: 10mm

Options required: Bi-Directional Flow, Manifold, Manual Override, Mounting Bracket, Mounting Holes, Position Feedback Closed, Position Feedback Open+Closed