Description
ATEX Ex ia NAMUR Solenoid Valve – Rotex 51450V02IS-6
The Rotex 51450V02IS-6 is an ATEX and IECEx Ex ia intrinsically safe NAMUR solenoid valve designed for direct mounting onto pneumatic rotary actuators in hazardous-area process and valve automation applications.
The valve can be configured for 3/2 or 5/2 way monostable operation, allowing one NAMUR valve platform to control either single-acting or double-acting pneumatic actuators. Internal pilot operation provides reliable switching across a 2 to 8 Bar working pressure range.
Featuring a hard-anodised aluminium body, 6mm orifice and 12 L/min water flow, the 51450V02IS-6 combines compact NAMUR mounting with certified Ex ia intrinsic safety and IP67 environmental protection.
Valve Function & Operation
Function: 3/2 or 5/2 way monostable
Operation: Internally piloted
The Rotex 51450V02IS-6 is designed for direct NAMUR mounting, reducing external pipework between the control valve and pneumatic actuator.
In 3/2 configuration, it can be used for control of single-acting spring-return pneumatic actuators.
In 5/2 configuration, it can be used for directional control of double-acting pneumatic actuators.
The monostable design uses a single solenoid and automatically returns to its normal position when the electrical signal is removed.
Operating pressure: 2 to 8 Bar
Ports, Orifice & Flow
Connections: 1/4" BSP or NPT
Orifice: 6mm
Flow rate: 12 L/min
The compact flow path is designed for reliable pneumatic actuator control while maintaining the benefits of direct NAMUR mounting.
Construction & Materials
Body: Hard-anodised aluminium
Internals:
Aluminium
Brass
316 stainless steel
Available seat/seal materials:
NBR
FKM (Viton®)
EPDM
Fluorosilicone
Suitable media:
Air
Inert gases
Operating temperature: -25°C to +75°C
Manual Override
The Rotex 51450V02IS-6 offers a versatile manual override for commissioning, maintenance and actuator testing.
Available operation includes:
Push – momentary manual operation
Push and turn – mechanically retained operation
Stay-put – maintains the manually selected state
This provides useful local control where electrical actuation is unavailable or during commissioning.
ATEX & IECEx Intrinsic Safety
The valve incorporates an Ex ia intrinsically safe IP67 enclosure with integrated electrical terminals.
Approvals: ATEX & IECEx
IECEx certificate: IECEx BAS 12.0128X – Issue 1
ATEX certificate: Baseefa12ATEX0243X – Issue 1
Gas marking:
Ex ia IIC T5 Ga
-60°C ≤ Ta ≤ +75°C
Ex ia IIC T6 Ga
-60°C ≤ Ta ≤ +60°C
Dust marking:
Ex ia IIIC T200 125°C IP67 Da
-60°C ≤ Ta ≤ +75°C
Intrinsically Safe Parameters
Minimum operating parameters:
Voltage: 10V
Current: 20mA
Power: 0.20W
Entity parameters:
Ui: 32V DC
Ii: 230mA
Pi: 2.3W
Li: 0
Ci: 0
The associated intrinsically safe barrier or galvanic isolator must be selected in accordance with these certified entity parameters and the requirements of the complete Ex ia circuit.
Electrical Connection
Protection: IP67
Electrical terminals: Integrated
Conduit entry options:
1/2" NPT
M20 × 1.5
The integrated terminal enclosure provides a robust electrical connection without requiring a conventional DIN plug arrangement.
Typical Applications
The Rotex 51450V02IS-6 is particularly suited to hazardous-area pneumatic actuator control in oil and gas installations, petrochemical plants, chemical processing, tank farms, process skids, offshore equipment, refineries and industrial process valve automation.
Its convertible 3/2 or 5/2 NAMUR configuration makes it useful where both single-acting and double-acting pneumatic actuators are used across a plant.
Why Choose the Rotex 51450V02IS-6?
The principal advantage is the combination of direct NAMUR mounting, 3/2 or 5/2 functionality and Ex ia intrinsic safety in one compact valve.
Direct actuator mounting reduces pneumatic pipework, while the 3/2 or 5/2 configuration provides flexibility for single-acting and double-acting actuators. With IP67 protection, integrated terminals and multiple manual override modes, it is particularly well suited to hazardous-area process valve automation.
Related Products & Categories.
