Product Overview
The BELIMO R664 AO is a characterized control valve engineered for precise modulating control of hot and chilled water, as well as glycol solutions, in commercial and industrial HVAC and process systems. As a characterized control valve, the R664 AO features a specially contoured ball or plug geometry that delivers an equal-percentage or linear flow characteristic, ensuring stable and accurate modulation across the full stroke range. The “AO” designation indicates factory-configured actuator integration, providing a complete, ready-to-install valve and actuator assembly. This valve is designed for two-way or three-way control duty in hydronic circuits, delivering tight shut-off, low leakage rates, and superior authority for precise temperature and flow regulation in demanding process environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Characterized Control Valve (Process & Pneumatic Valve) |
| Model Designation | R664 AO |
| Manufacturer | BELIMO |
| Valve Type | Characterized Control Valve (Equal-Percentage / Linear Characteristic) |
| Operating Pressure | Standard Industrial Grade (Up to rated bar per manufacturer specification) |
| Mounting & Connection | Standard ISO / Manufacturer Interface (Flanged or Threaded per model) |
| Actuation | Factory-Mounted Actuator (AO Configuration) |
| Media Compatibility | Hot Water, Chilled Water, Glycol Solutions |
Engineering Features & Advantages
- Precision Performance: Characterized flow contour delivers accurate equal-percentage or linear modulation, ensuring stable control loop response and precise temperature regulation across the full operating range.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and tight shut-off performance for long service life in hydronic and process circuits.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, enabling straightforward drop-in replacement without modification to existing piping or control wiring.
- Integrated Actuator Package: The AO configuration provides a factory-matched actuator, eliminating field assembly errors and ensuring optimal valve-actuator torque pairing for reliable stroke performance.
- Low Leakage Design: Precision-machined seating surfaces minimize internal leakage, improving energy efficiency and control accuracy in closed-loop systems.
Typical Industrial Applications
The BELIMO R664 AO characterized control valve is widely deployed in commercial HVAC and industrial process environments, including: air handling unit (AHU) coil control in large commercial buildings; district heating and cooling networks requiring precise flow modulation; industrial process cooling and chiller plant hydronic circuits; and secondary/primary loop temperature control in manufacturing facilities, data centers, and pharmaceutical cleanroom systems. Its characterized control profile makes it particularly suited for applications demanding high control authority and stable modulation under varying load conditions.
PRODUCT IMAGES
BELIMO R664 AO Characterized Control Valve
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine BELIMO R664 AO Rotary Actuator. This Switzerland-made 24V AC/DC electric actuator features a robust gear train, delivering precise, reliable valve control for heavy-duty industrial HVAC and process systems.