Danfoss logo
ICS-(H)A4A / ICS-(H)S4A-product-category

ICS-(H)A4A / ICS-(H)S4A

The ICS servo variant is a pilot-operated valve for regulation of pressure, temperature and/or with an On/Off function for a refrigeration system.The valve is suitable for low- and high-pressure refrigerants and can be used in all locations in the system, when not exposed to phase change (no expansion over the valve).The ICS is available with 1 or 3 pilot ports and together with optional external pilot lines, numerous variations in control functions can be obtained.With the introduction of the flanged ICV - the drop in replacement valve for all common flanged control valves on the market - Danfoss has invigorated Industrial retrofitting.The ICV valve family includes 3 different configurations. The well-known pilot controlled ICS ((H)A4A) which comes as a 1- or 3 pilot variant. Together with the comprehensive program of pilots and numerous pilot configurations, all common used pilot regulations can be achieved.

Features and benefits

  • Designed for industrial refrigeration applications for a maximum working pressure of 406 psig / 28 bar
  • Applicable to HCFC, HFC and R717 (Ammonia)
  • Low temperature steel body
  • Low weight and compact design
  • V-port regulating cone ensures optimum regulating accuracy particularly at part load.
  • Function module has a QPQ surface treated insert and a steel piston ring ensuring precise control accuracy.
  • Modular Concept
  • Manual opening
  • PTFE seat provides excellent valve tightness
  • The top cover can be rotated into any possible position without affecting the operation of the valve.