ICS1-50A-ICS3-65D Pilot Proportional Control Valve

Installation Method for ICS1-50A-ICS3-65D Pilot Operated Proportional Regulating Valve

The Danfoss ICV Flexline™ industrial control valve family consists of the ICM series electric valves and the ICS series pilot-controlled servo main valves. Based on a unique universal valve body design and modular concept, it integrates mechanical and electronic control solutions, ensuring safety, efficiency, stability, and precision in system control.

Danfoss ICV control valves offer you:

◈ Innovative modular design for fast and time-saving installation, maintenance, and repair

◈ Direct welding without flanges, reducing leakage risk by up to 80%

◈ Unique V-port design ensuring precise refrigeration system regulation

◈ All components made of low-temperature steel to meet pressure requirements for future high-pressure refrigerants like CO₂

◈ Plug-in modules treated with QPQ (black oxide finish) for excellent environmental adaptability

◈ Award-winning patented products with globally certified international quality

Main Technical Parameters

◈ Refrigerant: Suitable for all common non-flammable refrigerants, including ammonia and CO₂, as well as non-corrosive gases/liquids

◈ Temperature Range: –60℃/+120℃ (–76℉/+248℉)

◈ Maximum Working Pressure: 52 bar g (754 psi g)

◈ Optional Caliber: DN 20-150

When installing the ICS servo main valve, ensure the valve stem is vertically upward (Figure 1). The ICS servo main valve must be installed according to the flow direction indicated by the arrow on the valve body. The end cover should face upward (Figure 2). The end cover can be rotated in four 90° directions on the valve body without affecting valve functionality. The ICS servo main valve is equipped with a manual operating lever for manual opening and closing. If an external pilot valve is used, it must be connected to the upper part of the main pipeline to prevent contaminants and oil from entering the pilot valve line. If ICS 1 is used as a solenoid valve on the liquid supply line for on/off control, external control pressure must not be introduced to avoid liquid hammer.

The design of the ICS servo main valve allows it to withstand high internal pressure. Nevertheless, the pipeline system design must avoid liquid traps to prevent damage from excessive pressure due to thermal expansion. The pipeline design should include effective protection against transient "liquid hammer" phenomena in the system.