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SIGMA Compact

Dynamic Balancing Valve

The SIGMA Compact is an externally adjustable dynamic balancing valve that provides simple, accurate and reliable flow limitation and isolation in heating and cooling systems.

SIGMA Compact is offered in 2 series:

• The Ultra series has reduced size and weight to offer an easy installation.
• The Standard series has higher flows to cover a wider flow range.

SIGMA Compact can be used in both heating and cooling systems for the effective distribution of flow in various sections of the system.

SIGMA Compact can be used instead of traditional double regulating valves and can be installed in both variable flow systems and constant flow systems.

SIGMA Compact can be set to the required position easily by using the scale, to limit the flow rate in certain parts of a system, eliminating overflows and the unnecessary wastage of energy.

The internal differential pressure control function of the SIGMA Compact ensures that the set flow rate is limited irrespective of differential pressure fluctuations in the system.

The hand wheel can be used to close the valve and to open it to the preset flow.

Benefits

• Easy to size and select as only the flow rate is required
• Simplified system design with the number of balancing valves being reduced
• Removes the requirement for main circuit or branch balancing valves in the system
• Works as a flow limiter ensuring no overflows
• Easy to install and adjust on site
• Provides flexibility if the system is modified after the initial installation
• Simplifies the commissioning process and reduces commissioning time due to automatic balancing of the system
• High level comfort for the end-users as a result of the correct balance of the hydraulic system
• Reliable operation as a dynamic balancing valve automatically finds the hydraulic balance regardless of pressure fluctuations in the system

Features

• Easy adjustment of the flow using the clear preset scale on the valve
• Hand wheel provides an isolation function up to 10 bar differential pressure
• No minimum straight pipe lengths required before or after the valve
• Built-in P/T plugs for needle system
• Size range: DN50 to DN300
• Flow range: 1,400 to 600,000 l/h
• Maximum differential pressure: 800 kPa