Industrial / Electrical
Installation and Service Guide for Danfoss ICF Flexline Valve Station
A comprehensive guide for the Danfoss ICF Flexline valve station. Includes technical specifications, modular configuration details, installation benefits, and service procedures for industrial refrigeration systems.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
The Danfoss ICF Flexline valve station is a modular control solution designed to replace traditional valve trains. By consolidating multiple functions into a single valve housing, it significantly reduces installation time (requiring only two welds) and simplifies service procedures. It is suitable for a wide range of industrial refrigeration applications, including liquid lines, compressor injection lines, and hot gas lines.
Product Overview
The ICF Flexline system consists of a valve housing and a maximum of four or six function modules. This plug-and-play solution is designed to cover 90% of all applications with just four basic configurations, while still allowing for over 50 custom configurations.
Technical Specifications
- Temperature Range: -60°C to +120°C (-76°F to +248°F)
- Maximum Working Pressure: 52 bar g (754 PSI)
- Dimensions: DN 15 to DN 40
- Refrigerant Compatibility: Suitable for all common non-flammable refrigerants, including R717 (Ammonia), R744 (CO2), and non-corrosive gases/liquids depending on sealing material compatibility.
Installation and Construction
The system is designed for efficiency and space-saving:
- Reduced Welding: Requires only two welds for installation, compared to up to twelve on conventional valve trains.
- Direct Connections: Features direct weld flange-free connections.
- Compact Design: The compact footprint reduces the need for insulation.
- Fast Welding: Disassembly is not necessary during the welding process.
Service and Maintenance
The modular design facilitates quick and efficient servicing:
- Easy Access: The unique design allows quick access to individual function modules.
- Low Internal Volume: Minimizes refrigerant loss during service.
- Efficient Evacuation: Quick and efficient pump-down saves time and money.
- Protection: Includes rust-inhibiting protection to ensure a long product lifetime.
Available Function Modules
The valve housing can be configured with various modules, including:
- Stop valve module
- Manual regulating valve module
- Filter module
- Solenoid valve module
- Electronic expansion valve module
- Manual opening module
- Check valve module
- Stop/check valve module
- Motor valve module
- External welding connection module or Blank top cover
Optional side ports can be added for sight glass, temperature or pressure sensors, pressure gauges, or side exits for drain/bypass.
Tools and Resources
Danfoss provides several tools to assist with system design and selection:
- Coolselector 2: Calculation and selection software for industrial refrigeration projects.
- Danfoss IR App: A tool for finding spare part numbers and product information.
- 3D CAD Symbols: Available for download on the Danfoss website to assist in system design.
- Application Handbook: Provides guidance on selecting control methods and components.
For detailed technical literature and support, visit www.danfoss.com/ICF.
Official resources from the manual
Manufacturer information
Danfoss A/S
Practical help
Common problems
High refrigerant loss during service
The ICF Flexline design features low internal volume to minimize refrigerant loss. Ensure proper pump-down procedures are followed.
Difficult access to components during maintenance
The modular design is specifically engineered for quick and easy access to individual function modules. Ensure the valve is properly isolated before servicing.
Complex valve train installation
Replace traditional valve trains with the ICF Flexline station, which requires only two welds, reducing installation time by up to 80%.
Before use
- Verify that the refrigerant used is compatible with the sealing materials (suitable for R717, R744, HFC/HCFC).
- Ensure the system operating temperature is within the -60°C to +120°C range.
- Confirm the system pressure does not exceed 52 bar g (754 PSI).
- Check that the chosen module configuration (max 4 or 6) meets the application requirements.
- Use Danfoss Coolselector 2 software to verify the selection and pressure drop calculations.
Specs in practice
- Max Working Pressure
- 52 bar g (754 PSI) - The maximum pressure the valve station is rated to withstand.
- Temperature Range
- -60°C to +120°C - The operational temperature limits for the valve station.
Images and diagrams
- The valve station replaces a string of conventional valves with a single housing containing up to 6 function modules.
- Installation requires only two welds at the inlet and outlet, significantly reducing labor time.
Model compatibility
- Suitable for low- and high-pressure refrigerants.
- Compatible with CO2, NH3, and HFC/HCFC refrigerants.
- Not suitable for corrosive gases/liquids without verifying sealing material compatibility.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.