Danfoss ASV-P DN 15 with female thread (003L7621) – differential pressure controller for dynamic hydronic balancing of heating and cooling systems. Fixed setting 10 kPa, kvs 1.6 m³/h, Rp ½ connection, PN 16, max. temperature 120 °C. Supplied with a 1.5 m impulse tube and drain cock.

The Danfoss ASV-P DN 15 differential pressure controller with female thread is designed for dynamic hydronic balancing of heating and cooling systems. It maintains a constant differential pressure across risers and pipework branches over the entire load range from 0 to 100%, ensuring stable flow regardless of pressure changes in the system.

Application

The ASV-P valve is intended for installation in the return pipe. In combination with a partner valve (ASV-M, ASV-I or ASV-BD), it forms a complete system for limiting and stabilising flow in each branch or riser. By controlling the differential pressure, the need for complex manual balancing is eliminated, and the system automatically adapts to flow changes under partial load.

The ASV-P valve has a fixed differential pressure setting of 10 kPa. If required (e.g. during troubleshooting or under non-standard installation conditions), the setting can be increased to 20 or 30 kPa by replacing the spring – replacement is also possible under pressure without shutting down the system.

Main advantages

• Dynamic flow balancing across the entire system load range
• Maximum flow limitation in combination with an adjustable partner valve
• Reduced noise from thermostatic valves at partial flow
• Independent adjustment of each circuit without mutual interference
• High control valve authority, energy savings
• Option to divide the system into pressure-independent zones
• Compact body suitable even for confined spaces
• Precise control thanks to a pressure-relieved cone and a diaphragm adapted to the valve size