Description
1/4" Brass 3/2 Way Solenoid Valve 0–70 Bar NC – ERA-SIB EN56611
The ERA-SIB EN56611-23 is a high-pressure 1/4" BSP brass solenoid valve designed for reliable 3/2-way control of compressed air, water, gas, light oils and compatible vacuum applications.
Featuring a direct acting, normally closed design, this industrial solenoid valve operates from zero differential pressure up to 70 bar without requiring a minimum operating pressure. Its compact construction and fast switching response make it particularly suitable for high-pressure pneumatic control, industrial automation, process equipment and specialist OEM machinery.
Manufactured by ERA-SIB, the EN56611 combines a durable brass valve body, stainless steel internal components, urethane valve seats and FKM seals with a continuously rated industrial solenoid coil.
3/2 Way Normally Closed Operation
The EN56611 is a three-port, two-position normally closed solenoid valve.
Power OFF → Supply port 1 is closed, while outlet port 2 is connected to exhaust port 3.
Power ON → Supply port 1 connects to outlet port 2, while exhaust port 3 is closed.
This arrangement enables the valve to control both fluid supply and exhaust functions, making it suitable for pneumatic actuators, pilot circuits and other compatible three-way control applications.
The direct acting mechanism operates independently of system pressure, allowing the valve to function from zero differential pressure.
High-Pressure Performance – Up to 70 Bar
The EN56611 is designed for demanding applications requiring reliable switching at elevated operating pressures.
Operating Pressure: 0–70 Bar
Minimum Differential Pressure: 0 Bar
Operating Principle: Direct Acting
Valve Function: 3/2 Way Normally Closed
Switching Time: 20ms Maximum
The manufacturer's datasheet specifies a maximum operating pressure of 70 bar for both AC and DC configurations with the listed air, gas, water and oil media.
This makes the EN56611 particularly useful where conventional low-pressure three-way solenoid valves are unsuitable.
1/4" BSP Ports & Flow Performance
The valve features 1/4" BSP connections and two different internal seat sizes, depending on the flow path.
Port Connection: 1/4" BSP
Optional Connection: NPT
Flow Path 2 → 1: 2.0mm Seat, Kv 1.8 L/min
Flow Path 3 → 1: 1.6mm Seat, Kv 1.3 L/min
The different flow capacities reflect the internal three-way valve construction.
These flow values are specified by the manufacturer for the corresponding flow paths and should not be treated as a single universal Kv rating.
Brass Construction & Sealing Materials
Valve Body: Brass
Solenoid Tube: Stainless Steel
Internal Components: Stainless Steel
Valve Seats: Urethane
Seals: FKM (Viton®)
Coil Encapsulation: Polyamide
The combination of brass construction and stainless steel internal components provides durability for compatible high-pressure fluid and pneumatic applications.
Urethane valve seats provide the internal shut-off surfaces, while FKM seals offer compatibility with a range of industrial fluids.
Optional nickel-plated brass and stainless steel body versions are listed by the manufacturer.
Suitable Media
The ERA-SIB EN56611 is specified for compatible:
Compressed Air
Water
Industrial Gases
Light Oils
Vacuum Applications
Maximum Media Viscosity: 40 cSt
Material compatibility should be checked against the brass body, stainless steel internals, urethane seats and FKM seals before use.
The manufacturer's reference to gas compatibility does not establish approval for every fuel gas or hazardous-area installation.
Temperature & Installation
Maximum Media Temperature: +100°C
Ambient Temperature: -10°C to +50°C
Maximum Media Viscosity: 40 cSt
Mounting Position: Any Orientation
Approximate Weight: 450g Including Coil
The manufacturer permits installation in any mounting position, providing flexibility for compact machinery and industrial control panels.
Solenoid Coil & Electrical Options
The EN56611 is fitted with a moulded industrial solenoid coil designed for continuous operation.
Coil Size: 40/15
Insulation Class: F (155°C)
Duty Rating: 100% Continuous
Holding Power: 14W
Voltage Tolerance: -10% / +15%
Electrical Connection: 3 Spade Terminals
Connector Standard: DIN 43650
Ingress Protection: IP65 With Connector
Available Voltages
DC: 12V, 24V and 48V
AC: 12V, 24V, 48V, 110V and 230V, 50/60Hz
AC versions operate with a bridge rectifier as specified by the manufacturer.
The selected voltage must match the electrical supply and the appropriate coil and connector configuration.
Optional Configurations & Maintenance
The manufacturer lists several optional configurations and replacement components for the EN56611 Series.
Optional PG9 DIN 43650A Connector
Nickel-Plated Brass Body
Stainless Steel Body Version
Replacement Solenoid Coil
Complete Plunger and O-Ring Repair Kit
Repair Kit Reference: KITEN56611
These options support maintenance and specialist application requirements without requiring a completely different valve design.
Typical Applications
High-Pressure Pneumatic Control
Industrial Gas Control
Compressed Air Pilot Circuits
Three-Way Process Control
High-Pressure Water Systems
Light Oil Control
Automated Industrial Machinery
OEM Equipment
Vacuum Switching Applications
Industrial Test Equipment
Technical Specification
Manufacturer: ERA-SIB
Model: EN56611-23
Valve Type: 3/2 Way Normally Closed
Operating Principle: Direct Acting
Port Size: 1/4" BSP
Optional Thread: NPT
Operating Pressure: 0–70 Bar
Minimum Differential Pressure: 0 Bar
Seat Diameter, Flow Path 2 → 1: 2.0mm
Kv, Flow Path 2 → 1: 1.8 L/min
Seat Diameter, Flow Path 3 → 1: 1.6mm
Kv, Flow Path 3 → 1: 1.3 L/min
Body Material: Brass
Internal Components: Stainless Steel
Valve Seats: Urethane
Seals: FKM
Suitable Media: Air, Water, Gas, Light Oil, Vacuum
Maximum Media Viscosity: 40 cSt
Maximum Media Temperature: +100°C
Ambient Temperature: -10°C to +50°C
Switching Time: 20ms Maximum
Coil Size: 40/15
Coil Insulation: Class F (155°C)
Coil Duty Rating: 100% Continuous
Holding Power: 14W
Voltage Tolerance: -10% / +15%
DC Voltages: 12V, 24V, 48V
AC Voltages: 12V, 24V, 48V, 110V, 230V
AC Frequency: 50/60Hz
AC Rectification: Bridge Rectifier
Electrical Connection: DIN 43650
Ingress Protection: IP65 With Connector
Mounting Position: Any
Approximate Weight: 450g
Repair Kit: KITEN56611
Why Choose the ERA-SIB EN56611?
The ERA-SIB EN56611 combines 70 bar pressure capability, direct acting operation from zero differential pressure and three-way normally closed control in a compact brass solenoid valve.
Its fast switching response, durable construction and wide choice of electrical configurations make it suitable for demanding pneumatic, fluid control and industrial automation applications.
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