Key Features

½" to 2" BSP Sizes
WRAS Approved Ball Valve
WRAS Certificate 2211362
Smart CNX20S Actuator
OLED Smart Display
Power Open / Power Close
Capacitor Failsafe Return
20Nm Actuator Torque
0–40 Bar Pressure Range
10–15 Second Operation
24V AC/DC Option
95–265V AC Option
Open & Closed Feedback
Volt-Free Feedback Contacts
Manual Override
Visual Position Indicator
Anti-Condensation Heater
IP67 Actuator Protection
Up To +95°C Media
Any Position Mounting
In Stock
Free Next Day UK Delivery

Datasheets

Data Sheet

Description

½-2" WRAS Smart Motorised Ball Valve – CNX20S Failsafe

The CNX20S WRAS Series is a heavy-duty WRAS-approved 2/2 way smart motorised ball valve, Certificate 2211362, with OLED display, position feedback and capacitor failsafe return, designed for potable water and demanding industrial flow-control applications.

Available from ½" to 2" BSP, the range combines a WRAS-approved brass full-bore ball valve with the powerful 20Nm CNX20S smart electric actuator, providing reliable power open/power close operation together with automatic failsafe return.

The smart actuator incorporates an OLED screen, visual valve position indication, manual override, open and closed volt-free position feedback switches and an internal anti-condensation heater as standard.

Available in 24V AC/DC or universal 95–265V AC versions.

Smart Actuator & Failsafe Operation

The CNX20S uses an intelligent electric actuator with internal capacitor failsafe technology.

During normal operation the actuator provides powered opening and closing of the valve.

In the event of loss of electrical power, stored energy within the actuator allows the valve to move automatically to its designated failsafe position.

This provides an important safety function for applications where the water or process supply must be isolated following electrical failure.

The failsafe capacitor requires approximately 1–2 minutes to recharge between failsafe operations.

Smart OLED Display

The CNX20S actuator includes an integrated OLED display for convenient local monitoring of the actuator.

Standard actuator features include:

✓ OLED Smart Display

✓ Visual Position Indicator

✓ Manual Override

✓ Open Position Feedback

✓ Closed Position Feedback

✓ Capacitor Failsafe Return

✓ Anti-Condensation Heater

This provides substantially more local control and status information than a conventional basic motorised valve actuator.

Valve Sizes & Flow

Available sizes:

½" BSP – 15mm orifice – Kv 16.3

¾" BSP – 20mm orifice – Kv 29.5

1" BSP – 25mm orifice – Kv 43

1¼" BSP – 32mm orifice – Kv 89

1½" BSP – 40mm orifice – Kv 230

2" BSP – 50mm orifice – Kv 265

All sizes are rated from 0 to 40 Bar maximum according to the manufacturer's data, subject to application, media temperature and relevant system limitations.

Valve Function & Operation

Function: 2/2 way

Valve type: Direct acting motorised ball valve

Operation: Power open / power close with failsafe return

Rotation: Quarter turn

Pressure range: 0–40 Bar maximum

Opening / closing time: approximately 10–15 seconds

Mounting position: Any position

Design life: 20,000 cycles

Duty cycle: 75%

The manufacturer specifies a minimum one-minute cooling period between operating cycles.

Electrical Options

Available actuator voltages:

✓ 24V AC/DC

✓ 95–265V AC

12V DC is not available with the CNX20S smart actuator.

Actuator power: 15 Watts

Actuator torque: 20Nm

Enclosure protection: IP67

Electrical connection: 0.8 metre cable

Open & Closed Position Feedback

Two independent volt-free feedback switches are included as standard.

These provide confirmation of:

✓ Valve Fully Open

✓ Valve Fully Closed

Feedback rating: Maximum 30V DC / 0.5A

Because the contacts are volt-free, they do not supply an output voltage themselves and can be integrated into suitable external control, alarm, PLC or BMS circuits.

Anti-Condensation Heater

A 0.6W internal anti-condensation heater is included within the actuator.

This helps reduce condensation within the actuator housing where temperature changes and humid operating conditions could otherwise result in internal moisture formation.

Valve Construction

Valve body: Brass CW617N / CW614N

Valve seals: PTFE, FKM (Viton) and NBR

Valve approval: WRAS Approved

WRAS Certificate: 2211362

Actuator housing: ABS engineering plastic

Actuator torque: 20Nm

Actuator protection: IP67

Cable: 0.8 metre, 7 core

Compliance & Approval

✓ WRAS Approved

✓ WRAS Certificate 2211362

✓ Suitable for Potable Water

✓ 2/2 Way Direct Ball Valve

✓ IP67 Smart Actuator

Media

Suitable media include:

✓ Water

✓ Potable Water

✓ Air

✓ Gas

✓ Oil

Maximum media temperature: +95°C

Minimum media temperature: -20°C

Ambient temperature: -20°C to +70°C

For potable-water applications, actual operating conditions should remain within the applicable WRAS approval conditions.

Typical Applications

✓ Potable Water Systems

✓ WRAS Water Installations

✓ Building Services

✓ Water Treatment Equipment

✓ Automatic Water Isolation

✓ BMS Controlled Systems

✓ Process Water Systems

✓ Industrial Automation

✓ Plant & Machinery

✓ Tank Filling & Isolation

✓ Remote Valve Control

✓ Failsafe Water Shut-Off

Why Choose the CNX20S?

Unlike a basic motorised ball valve, the CNX20S combines normal powered valve operation with smart local indication, position feedback and capacitor failsafe functionality in one actuator.

The powerful 20Nm actuator allows one smart actuator platform to operate WRAS ball valves from ½" through to 2", simplifying installation, maintenance and spare actuator requirements.

The 95–265VAC universal-voltage version is particularly useful for OEM and industrial installations where supply voltage may differ between projects.

View Technical Specification

Technical Specification

Brand: Connexion

Model: CNX20S-WRASBV

Width: 59.00 mm

Height: 135.00 mm

Depth: 70.00 mm

Weight: 1.00 kg

Valve / Product Type: Ball Valve, Motor Actuated Valves

Body Material: Brass

Voltage: 24vDC, 24vAC, 110vAC, 230VAC

Port Size: 1/2 thread, 3/4 thread, 1 thread, 11/4 thread, 11/2 thread, 2 thread

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

Operation: Direct Acting from 0 Pressure

Pressure: 0.02 Bar (20 mBar), 0.1 Bar (100 mBar), 0.2 Bar (200 mBar), 0.3 Bar (300 mBar), 0.4 Bar (400 mBar), 0.5 Bar (500 mBar), 0.6 Bar (600 mbar), 0.7 Bar (700 mBar), 0.8 Bar (800 mBar), 1 Bar, 1.2 Bar, 1.3 Bar, 1.4 Bar, 1.5 Bar, 1.6 Bar, 2 Bar, 2.5 Bar, 3 Bar, 3.5 Bar, 4 Bar, 4.5 Bar, 5 Bar, 5.5 Bar, 6 Bar, 6.5 Bar, 7 Bar, 7.5 Bar, 8 Bar, 8.5 Bar, 9 Bar, 10 Bar, 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), PTFE (Teflon)

Approvals:: IP67, WRAS

Media: Air, Gases (Non Aggressive), Oils + Fuels 50cSt Max, Water

Options required: Anti Water Hammer, Bi-Directional Flow, Manual Override, Position Feedback Closed, Position Feedback Open+Closed, Position indication Visual

Orifice: 15mm, 20mm, 25mm, 32mm, 40mm, 50mm

Found in these Categories

½-2" WRAS Smart Motorised 40 Bar Ball Valve Failsafe CNX20S

Name: ½-2" WRAS Smart Motorised 40 Bar Ball Valve Failsafe CNX20S
Brand: Connexion
SKU: CNX20S
Price: 313.74 GBP
Availability: InStock