Danfoss ASV automatic balancing valves provide a simple, reliable and cost-effective way to create hydronic balance in two-pipe heating or cooling systems. They solve the technical issue of pressure fluctuations: the root cause of system imbalances and problems such as uneven heat distribution, noise and high energy consumption.
Visible setting scale Simple adjustment of the differential pressure setting, no special equipment is required. The clearly visible setting scale makes it easy to determine if the setting is adjusted correctly. The setting ring can be locked to prevent unauthorized adjustments.
Short build in height The installation dimensions are decreased for flexible and convenient installation.
Faster and better flushing Increase the reliability of the system by flushing it and remove before putting the system into operation. To flush and fill a system faster, the ASV-PV valve can temporarily be locked in an open position by a flushing ring accessory.
Integrated membrane The valve body and pressure membrane are combined into one component. This design ensures optimal low flow performance and extremely ideal differential pressure sensitivity for each individual DN size valve.
Branch should be balanced with a differential pressure controller for dynamic hydronic balance, with following characteristics:
Valve should keep stable differential pressure across the branch by membrane driven controller
Valve should have variable Dp setting. Setting should be hidden or lockable to prevent unauthorized changes
Setting accuracy should be within ±10% of set differential pressure, proven by independent accredited third party
Minimum needed differential pressure over the valve should not be higher than 10 kPa, independently from Dp setting
Valve should have metal to metal (valve cone and seat) sealing to ensure optimal performance of differential pressure control at low flows
Differential pressure setting should be linear throughout the setting range (1 turn 1 kPa or 1 turn 2 kPa depending on dimension)
The setting range should be adaptable via spring replacement in dimensions DN 15-40. Spring should be exchangeable under pressure
Valve should provide Dp setting range fit to application to ensure optimal system performance (such as 5-25 kPa setting range for radiator based systems)
Valve capacity per valve size should cover flow range according to VDI 2073 Standards (with water velocity of up 0.8 m/s)
Valve should have shut-off function separated from the setting mechanism. Shut-off service function should be possible to do by hand / without tool
Drain function should be integrated in valve in dimension range of DN 15-50 Valve should be delivered with impulse tube. Inner diameter of impulse tube should not be bigger than 1.2 mm to ensure optimal performance within the system
Valve in DN 15-40 range should be delivered with thermal insulation caps, min. 80°C
Valve should be delivered in reliable packaging for safe transport and handling
Product characteristics:
Pressure class: PN 16
Temperature range: -10 … +120°C
Valve size: DN 15-100
Installation: on return pipe with connection via impulse tube to supply pipe
DN 15-25:
Connection type: Internal thread ISO 7/1 and External thread ISO 228/1
Dp setting range: 5-25 kPa, 20-60 kPa
Max Dp: 1.5 bar
DN 32-40:
Connection type: Internal thread ISO 7/1 and External thread ISO 228/1
