Flow Regulating Manual Valves Flow regulating manual valve - ASTRA PLUS | ARI Flow regulating manual valve - ASTRA PLUS | ARI The ASTRA PLUS Flow Regulating Manual Valve by ARI is designed for precise flow control in heating and air conditioning systems. It is suitable for use with water and water-based solutions with cold protection. This valve is identified by the eClass-No. 37010203, ensuring compatibility and reliability in various HVAC applications. View Flanged PN 16 DIN EN-JS 1049