Performance beyond size

Combining high performance and energy saving capabilities, the Frese OPTIMA is setting new control standards for heating and cooling systems.

To complement the existing range of Frese OPTIMA pressure independent control valves, the portfolio has now been extended to include large diameter solutions for air handling units and other plant applications.

Operating Principle

The design of the Frese OPTIMA uses a single component for the linear modulating and rotational flow setting function that results in the valve having full authority. In practice, when the valve is set, the inlet area rotates horizontally with no influence on the length of stroke and during modulation, the inlet area moves in a linear vertical motion ensuring full stroke control. The design of the patented presetting component provides full stroke proportional modulating control at all flow settings whilst the dynamic balancing function ensures that flow is limited to the preset design condition. This provides accurate control and energy efficiency irrespective of any fluctuating system differential pressures.

Energy Saving

Field tests at Canary Wharf London, proved a significant reduction in pump energy costs through the installation of the Frese OPTIMA PICV on an air handling unit application. A saving of 35% was achieved from a higher ΔT in the system as a result of increased system stability due to the patented pressure independent design of the valve.
In addition to this saving, a further 50% can be achieved through a simplified design of the system and optimal pump control.