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

Cla-Val 133-AV Electronic Interface Control Valve

The Cla-Val 133-AV is a hydraulically actuated control valve for water distribution networks, equipped with the VC-22D electronic interface. The system enables calculation or closed-loop control of flow, valve position, or pressure, utilizing the X117D position transmitter and X141-PT pressure transmitter. In the event of power loss, the valve maintains its last position, ensuring process stability.

Control Functionality

The VC-22D controller accepts both analog and digital signals and supports Modbus RTU/TCP protocols. Flow can be calculated from valve position and differential pressure without a dedicated flowmeter, provided the valve sizing and characteristic curves are suitable for this method.

Technical Specifications

• Main valve: Cla-Val 100-01 Hytrol
• Sizes: DN80–DN900 (ductile iron), DN80–DN400 (cast steel or bronze)
• Connections: ANSI flanged, Class 150 / 300 available
• Body materials: ductile iron ASTM A536, cast steel ASTM A216-WCB, bronze UNS 87850
• Trim: bronze standard, stainless steel optional
• Disc/diaphragm: Buna-N
• Controller supply: 12–24 VDC
• I/O: 6x 4–20 mA inputs, 4x 4–20 mA outputs, 6 digital inputs, relay/solenoid outputs

Industrial Applications

• SCADA-based flow control in water transmission pipelines
• Pressure reducing, sustaining, flow limiting, or level control with integrated flow measurement
• Retrofit of existing hydraulic pilot-operated valves
• Batching/totalizing in industrial water networks

Valve Selection Criteria

Proper selection requires specification of supply voltage, minimum/maximum pressure, flow range, DN, pressure class, and optional features such as strainer, isolation valves, opening/closing speed controls, or independent operating pressure. Media compatibility, actuator type, and sealing options should be evaluated based on process requirements and maintenance considerations.