The ASR0.4N valve insert is a spare part designed for Siemens MVS661..N (ACVATIX™) modulating refrigerant valves. It is used to restore the valve’s original flow characteristics in the event of wear or when the parameters of the refrigeration circuit change. The insert is fitted directly into the valve body without the need for any additional adjustment.

Application

The ASR0.4N valve insert is intended for modulating control of refrigeration circuits, including chillers and heat pumps. It is compatible with ammonia (R717), standard safety refrigerants and carbon dioxide (CO₂ / R744). The insert is used in expansion applications, hot-gas bypass circuits and suction throttling applications.

Features and benefits

• Restores the valve’s original flow characteristics after wear or changes in system parameters
• Direct installation into the valve body – no adjustment required
• Flow coefficient kvs 0.40 m³/h (DN 25)
• Suitable for ammonia (R717), safety refrigerants and CO₂ (R744)
• Maximum operating pressure PN 63 bar
• Supplied complete with installation instructions (74 319 0486 0)
• Manufactured in Germany, ACVATIX™ / Siemens Smart Infrastructure brand

Accessories

• ASR61 – replacement electronic unit for MVS661..N valves
• ASR70 – PTC resistance heating element for applications with refrigerant temperatures below 0 °C (typically pumped ammonia or CO₂ systems)