Electronic Multi-Function Electronic Interface Valve - 133-AW | Cla-Val

Cla-Val 133-AW Multifunction Electronic Interface Valve

The Cla-Val 133-AW is a hydraulically operated water control valve equipped with the VC-22D electronic controller. It monitors or calculates flow, valve position, and pressure using feedback from the X117 position transmitter and X141-PT pressure transmitter. In the event of power loss, the valve is designed to fail closed.

Main Assembly

• Main valve: Cla-Val 100-01 Hytrol
• Solenoid controls: CS2, normally open / normally closed
• Controller: VC-22D
• Position feedback: X117 Series
• Pressure feedback: X141-PT
• Connection: flanged
• Standard: ANSI
• Pressure classes: 150 / 300 lbs
• Body materials: brass, ASTM A216 WCB, ductile iron

Control Operation

The VC-22D uses valve position and pressure to calculate flow based on valve size and configuration. The calculated signal can be retransmitted or used for local/remote flow setpoint control. Supported interfaces include 4–20 mA, digital inputs, relay/solenoid outputs, and Modbus RTU/TCP.

Applications

• water transmission and distribution lines
• SCADA-based flow control
• retrofit for existing pilot-operated valves
• pressure reducing, pressure sustaining, flow limiting, or level control while retaining hydraulic fail-safe operation
• totalizing / batch volume control

133-AW vs 133-AV

The 133-AW is fail-close: it closes on loss of electrical power. This variant is selected when process safety requires flow interruption, such as tank protection, over-delivery limitation, or line isolation.

FAQ

What data is required for selection?
Voltage, DN, pressure class, min/max pressure, flow rate, and required fail position.

Is a flowmeter required?
Not always. Flow can be calculated from position and pressure, provided hydraulic conditions are suitable.