Key Features

✓ DN32 Coaxial Solenoid Valve

✓ 2/2 Way Normally Closed

✓ Normally Open Version Available

✓ Direct Acting Operation

✓ Zero Differential Pressure

✓ 0–100 Bar Operating Pressure

✓ 16 Bar Reverse Pressure

✓ Kv 20.0 m³/h Flow Capacity

✓ 1", 1¼" or 1½" BSP

✓ Brass or Stainless Steel Body

✓ FKM & PTFE Seals

✓ Fluids Up To 1000 cSt

✓ -10°C to +100°C Media

✓ 24VDC or 230VAC

✓ IP65 With Connector Fitted

✓ TÜV & DVGW Approved

✓ Vacuum Service Option

✓ High Leak-Tightness Option

✓ Oil & Grease-Free Option

✓ Manual Override Option

✓ Position Indication Option

✓ Free UK Delivery Available

Datasheets

Description

DN32 Coaxial Solenoid Valve 0-100 Bar – RSG 27232

The RSG 27232 is a high-pressure DN32 direct acting coaxial solenoid valve designed for reliable control of liquids, oils, gases, vacuum and compatible industrial process media from 0 to 100 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 272 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 thick or glutinous process fluids with viscosities up to 1000 cSt.

The DN32 version provides the highest flow capacity within the RSG 272 Series, with a Kv flow coefficient of 20.0 m³/h, equivalent to approximately 333 L/min water flow at a 1 Bar pressure differential. Standard connections are 1", 1¼" and 1½" BSP.

Valve Function & Operation

The RSG 27232 is a 2/2 way direct acting coaxial valve available in either normally closed or normally open configurations.

272A32 – Normally Closed

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

272B32 – 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 100 Bar.

DN32 Ports & Connections

The standard DN32 RSG 27232 is available with:

✓ G1 BSP

✓ G1¼ BSP

✓ G1½ BSP

Optional connections include:

✓ NPT Threads

✓ PN16 Flanges

✓ PN40 Flanges

✓ PN100 Flanges

This provides considerable installation flexibility for larger high-pressure industrial pipework, machinery and process systems.

Pressure & Performance

Operating Pressure: 0 to 100 Bar

Reverse Flow Pressure: Up to 16 Bar

Nominal Diameter: DN32

Kv Flow Coefficient: 20.0 m³/h

Water Flow: Approx. 333 L/min @ 1 Bar ΔP

Weight – Brass Version: 12.6kg

The RSG 27232 combines true zero-pressure direct acting operation with 100 Bar pressure capability and the highest flow capacity in the standard RSG 272 Series.

Flow Capacity

The DN32 valve has a Kv flow coefficient of 20.0 m³/h, equivalent to approximately 333 L/min water flow at a 1 Bar pressure differential.

The RSG 272 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

The DN32 therefore provides the maximum flow capacity within the standard RSG 272 Series while retaining operation from zero pressure through to 100 Bar.

Coaxial Valve Design

The RSG 272 Series uses a coaxial construction, with the solenoid surrounding the central plunger and fluid flow path.

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

✓ Thick & Glutinous Fluids

✓ Oils & Lubricants

✓ High-Flow Process Systems

✓ Pressure Testing Equipment

✓ Test & Process Systems

High Viscosity Fluids

The RSG 27232 is suitable for thick and glutinous fluids with viscosities up to 1000 cSt.

This makes the coaxial design particularly useful for applications involving:

✓ Thick Oils

✓ Hydraulic Oils

✓ Lubricating Oils

✓ Viscous Process Fluids

✓ Glutinous Industrial 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 thicker 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 can also be supplied in alternative materials according to the connection and application requirements.

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.

Media Compatibility

Typical applications include:

✓ Water

✓ Hydraulic Oils

✓ Lubricating Oils

✓ Thick 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 272 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

✓ 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 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.

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

Temperature

Media Temperature: -10°C to +100°C

Ambient Temperature: -10°C to +50°C

Special Water Seals: Up to +80°C

Special Gas Seals: Up to +80°C

Coil & Electrical Specification

Electrical Duty: 100% ED

Protection: IP65 with connector fitted

Connection: DIN EN 175301-803 Form A

Voltage Tolerance: ±10%

Mounting Position: Any Position

DN32 power consumption:

24VDC – 73 Watts

230VAC 50Hz – 76 Watts

Voltage Options

Standard voltage options include:

✓ 24VDC

✓ 230VAC 50Hz

✓ Special Voltages On Request

For AC operation, the electrical connector incorporates a rectifier.

Additional electrical configurations can be supplied according to application requirements.

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:

✓ Up To 80% Lower 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 are available upon request.

Optional Features & Accessories

The RSG 272 Series can be configured with:

✓ Manual Override

✓ E1 Position Indication

✓ E2 Position Indication

✓ Inductive Position Switches

✓ LED Position Indication

✓ LED DIN Connector

✓ Aluminium Terminal Box

✓ Mounting Brackets

✓ PWM Power Reduction Connector

✓ Vacuum Configuration

✓ Oil & Grease-Free Construction

✓ Special Connections

✓ Modular Sub-Base Systems

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 monitoring circuits.

Typical Applications

✓ High Pressure Liquids

✓ High Pressure Gases

✓ High Flow Process Systems

✓ Pressure Testing Equipment

✓ Test Rigs & Process Skids

✓ Hydraulic Systems

✓ Lubrication Systems

✓ Thick & Glutinous Fluids

✓ Compressed Air Systems

✓ Industrial Gas Systems

✓ Vacuum Systems

✓ Process Engineering

✓ Industrial Automation

✓ Water Treatment Equipment

✓ Chemical Processing 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 27232 is direct acting from 0 Bar, so switching does not depend upon pressure differential.

Its DN32 coaxial construction combines the highest flow capacity in the RSG 272 Series at Kv 20.0 m³/h with operating pressure up to 100 Bar, making it particularly suitable for larger high-pressure machinery, gas systems, process equipment and test installations.

Available Versions

272A32 – Normally Closed

272B32 – Normally Open

Standard DN32 connections:

✓ 1" BSP

✓ 1¼" BSP

✓ 1½" 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 272 Series provides the highest standard operating pressure of these coaxial valve ranges, combining direct acting zero-pressure operation with pressure capability up to 100 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: 27232

Width: 115.00 mm

Height: 156.00 mm

Depth: 269.00 mm

Weight: 13.00 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 thread, 11/2 thread, 11/4 thread

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

Operation: Direct Acting

Pressure: 70 Bar, 80 Bar, 90 Bar, 100 Bar

Seals: EPDM, 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>500cSt, Water, Water (RO/Pure/Demin)

Orifice: 32mm

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