The Danfoss ASV-P DN 32 differential pressure controller is a reliable hydraulic device designed to automatically maintain a constant differential pressure in the controlled branch of a heating or cooling system. The valve is installed in the return pipe of a riser or branch and, in conjunction with a partner valve (ASV-I or ASV-BD), ensures stable pressure conditions regardless of changes in flow rate within the network. The package includes a 1.5 m impulse tube and a drain cock.

Key features

• Fixed differential pressure setting of 0.1 bar (10 kPa) – if required, this can be increased to 20 or 30 kPa by replacing the spring
• The spring can also be replaced under pressure without the need to drain the system
• Integrated shut-off and drain function
• 1¼" female threaded connection (IG) for easy installation in pipework
• High Kvs value of 6.3 m³/h ensures minimal pressure loss at nominal flow rate
• Robust design for operating overpressure up to PN 16

Typical applications

The ASV-P is intended for hydraulic balancing of branches and risers in heating and cooling systems – typically in circuits with radiators and thermostatic valves. The controller prevents excessive differential pressure at the thermostatic valves, reduces system noise and improves heating comfort. It is used in combination with a partner valve (ASV-I or ASV-BD) installed on the flow pipe, with both valves connected by the supplied impulse tube.