3/4 Inch Motor Actuated WRAS Ball Valve – Power Open/Close or Failsafe Return
The CNX20 WRAS Series is a heavy-duty 3/4 inch motor actuated brass ball valve designed for reliable automatic control of potable water, water treatment, HVAC, process plant and industrial automation systems. Combining a WRAS approved nickel-plated brass ball valve with a robust IP67 quarter-turn electric actuator, it provides dependable shut-off and long service life in demanding commercial and industrial environments.
Available in either Power Open/Close or Failsafe Return versions, the valve is suitable for applications where reliable operation, WRAS compliance and automatic return on power failure are essential. The actuator incorporates adjustable end-of-travel feedback switches, manual override, anti-condensation heater and ISO5211 direct mounting for dependable long-term operation.
Key Features
✓ WRAS approved motor actuated brass ball valve
✓ 3/4" BSP thread
✓ ISO5211 direct mount
✓ Nickel-plated brass body
✓ PTFE + Viton sealing system
✓ WRAS Approved Certificate 251015016
✓ Pressure range 0–40 Bar
✓ Power Open/Close or Failsafe Return
✓ IP67 industrial actuator
✓ Adjustable feedback switches
✓ Integrated anti-condensation heater
✓ Manual override supplied
✓ Suitable for continuous industrial service
Valve Specifications
Valve type: 2-way motor actuated brass ball valve
Port size: 3/4" BSP
Orifice: 20 mm
Flow (Kv): 29.5
Pressure range: 0–40 Bar
Media:
Air
Water
Water-based fluids
Oil
Diesel
Fluids compatible with brass, PTFE and Viton
Media temperature: -20°C to +95°C
Ambient temperature: -20°C to +70°C
Valve body: Nickel-plated brass
Ball: Brass
Seats: PTFE
Stem seals: Viton
Valve mounting: ISO5211 direct mount
Mounting position: Any orientation (except upside down)
Actuator Specifications
Type: Compact quarter-turn electric actuator
Protection: IP67
Torque: 25 Nm breakaway, 20 Nm running
Operating time: 10–15 seconds
Duty cycle: 75%
Allow approximately one minute between operating cycles for cooling.
Service life: 20,000 cycles
Power consumption:
Power Open/Close: 15 Watts
Failsafe: 36 Watts
Supply voltages:
12V DC
24V AC/DC
95–265V AC/DC
Maximum ambient temperature: +70°C
Includes:
Visual position indicator
Manual override (Allen key supplied)
Two adjustable volt-free end-of-travel feedback switches
0.6 Watt anti-condensation heater
Cable: 0.8 metre 7-core cable
Control Options
Power Open / Power Close
The valve remains in its last commanded position when power is removed.
Ideal where valve position must be maintained during power loss.
Failsafe Return
Power operates the valve normally.
When power is removed, the actuator automatically returns the valve to its predetermined safe position using its internal reserve power system.
A minimum of approximately 30 seconds power ON is required during first commissioning to fully charge the internal reserve capacitor.
Electrical Features
Visual position dome indicator
Manual override
Two cam-adjustable volt-free end-of-travel feedback switches
0.6 Watt anti-condensation heater
JST-XH 6S 7-pin connector fitted for factory testing and commissioning.
The connector can be removed and permanently rewired if required.
Typical Applications
Potable water systems
WRAS approved installations
Commercial plumbing
Building Management Systems (BMS)
HVAC systems
Water treatment
Chemical dosing
Industrial automation
Pump control
Plant rooms
OEM equipment
General industrial shut-off applications
Why Choose the CNX20 WRAS Series?
The CNX20 WRAS Series has been designed for applications where higher pressure ratings, industrial reliability and WRAS compliance are required. The combination of a 40 Bar nickel-plated brass ball valve, 20 Nm industrial actuator, IP67 enclosure, manual override, adjustable feedback switches and integrated anti-condensation heater provides a dependable solution for demanding commercial and industrial environments.
Available with either Power Open/Close or Failsafe Return operation, the valve is supplied fully assembled, factory tested and ready for immediate installation, making it ideal for water treatment, HVAC, process control and industrial automation systems.
Function:
2/2 Failsafe Closed, 2/2 Failsafe Open, Power Open/Power Close
Operation:
Direct Acting
Pressure:
12 Bar, 13 Bar, 14 Bar, 15 Bar, 16 Bar, 17 Bar, 18 Bar, 20 Bar, 25 Bar, 30 Bar, 35 Bar, 40 Bar
Seals:
FKM (Viton)
Approvals::
IP67, WRAS
Media:
Water
Options required:
Anti Water Hammer, Bi-Directional Flow, Manual Override, Position Feedback Closed, Position Feedback Open+Closed, Position indication Visual
