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OPTIMA Compact

Pressure independent control valve

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

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

The innovative design of OPTIMA Compact introduces an intelligent control valve that adjusts automatically to the preset flow in order to provide full modulating control. When the installer presets the valve according to the maximum designed flow, the stroke of the control valve remains unchanged, providing full modulating control.

In practical terms, OPTIMA Compact is designed to prevent overflow and maintain full valve authority below the design flow. Furthermore, OPTIMA Compact combines all those features that are necessary to ease the work of designers and installers:

• The wide (up to 800kPa) differential pressure range meets the requirements of most applications
• The compact design and the user-friendly presetting unit support easy installation and commissioning.

OPTIMA Compact pressure independent control valve (PICV) is used in heating and cooling systems with Fan Coil Units, Chilled Beams or other terminal unit applications. OPTIMA Compact provides modulating control with full authority regardless of any fluctuations in the differential pressure of the system. It combines an externally adjustable automatic balancing valve, a differential pressure control valve and a full authority modulating control valve. Precise control of the water flow in the building can be achieved, supporting occupant comfort and energy-efficient operation.

An additional benefit is that no balancing is required if further stages are added to the system, or if the dimensioned capacity is changed. Potential energy savings through improved control, lower flow and reduced pump pressure. Improved ΔT performance through faster response and increased system stability.

Frese Academy - Learn more about OPTIMA Compact Actuators

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. Valve authority is maintained at 1 by design.
• Flexibility if the system is modified after the initial installation

Installation

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

Operation

• Supports occupant comfort through high precision temperature control.
• Longer life due to less movements of the actuator

Features

• The presetting function has no impact on the stroke; Full stroke modulation at all times, regardless the preset flow.
• The constant differential pressure across the modulating control component is designed to maintain full valve authority.
• Automatic balancing is designed to prevent overflows under varying pressure conditions in the system.
• Thermal actuator On/Off or 0....10V, normally closed.
• Electro mechanical actuator 0-10 V and 3 point control, normally closed
• Differential pressure operating range up to 800 kPa
• High flows with minimal required differential pressure due to advanced design of the valve
• Small dimensions due to compact housing
• Higher presetting precision due to stepless analogue scale