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Frese OPTIMA

Pressure independent control valve

Designed to combine automatic balancing and full modulating control regardless of the preset flow.

The innovative design of Frese OPTIMA introduces an intelligent control valve that adjusts itself automatically to the preset flow in order to provide full stroke modulating control. When the installer presets the valve according to the maximum design flow, the stroke of the control valve remains the same thus providing 100% modulating control. In practical terms, Frese OPTIMA ensures there are no overflows and that below the design flow, the actuator has total authority.

Frese OPTIMA pressure independent control valve (PICV) is used in heating and cooling systems in applications with Fan Coil Units, Air Handling Units or other terminal unit applications. Frese OPTIMA provides modulating control with full authority regardless of any fluctuations in the differential pressure of the system.

Frese OPTIMA combines an externally adjustable automatic balancing valve, a differential pressure control valve and a full authority modulating control valve. Frese OPTIMA makes it simple to achieve 100% control of the water flow in the building, while creating high comfort and energy savings at the same time.

An additional benefit is that no balancing is required if further stages are added to the system, or if the dimensioned capacity is changed. Energy saving due to optimal control, lower flow and pump pressure. Maximized ΔT due to faster response and increased system stability.

Benefits

Design

• Less time to define the necessary equipment for a hydraulic balanced system (only flow data are required)
• No need to calculate valve authority
• Flexibility if the system is modified after the initial installation

Installation

• No further regulating valves required in the distribution pipework when Frese OPTIMA is installed at terminals.
• Total number of valves minimized due to the 3-in-1 design
• Minimized commissioning time due to automatic balancing of the system
• Removable cartridge solution simplifies flushing procedure
• No minimum straight pipe lengths required before or after the valve.

Operation

• High comfort for the end-users due to high precision temperature control
• Longer life due to less movements of the actuator

Features

• The presetting function has no impact on the stroke; Fullstroke modulation at all times, regardless the preset flow.
• The constant differential pressure across the modulating control component guarantees 100% authority.
• Automatic balancing eliminates overflows, regardless of fluctuating pressure conditions in the system.
• Flushing through the valve is possible due to the removable cartridge feature
• Electrical actuator 0-10 V and 3 point control, normally closed
• Differential pressure operating range up to 400 kPa
• High flows with minimal required differential pressure due to advanced design of the valve
• More accurate control due to long 5.5 mm stroke
• Higher presetting precision due to stepless analogue scale

Dynamic flow control - easy commissioning