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CPM Valves


Harco offers Alfa Laval’s Constant Pressure Modulating (CPM) valves, a pneumatic regulating valve that maintains a constant inlet or outlet pressure in hygienic process lines. Thanks to a quick response diaphragm, these compact valves immediately react to any change in product pressure, adjusting position to keep the pressure at pre-set values.

Alfa Laval’s CPM Valves feature a self-draining design and crevice-free, bowl-shaped valve body with welded valve seat to enable thorough cleaning, thus eliminating potential entrapment areas. The unique diaphragm with PTFE on the lower diaphragm also contributes to excellent cleanability.

Using different plug sizes and different Kv values, this pneumatic regulating valve is designed to maintain a constant pressure at the valve inlet or outlet in hygienic process lines for the dairy, food, beverage, personal care and many other industries. Typical applications include filling and bottling equipment.

The diaphragm in the valve enables it, under aseptic conditions, to react effectively to any changes in product pressure by shifting position against a constant air pressure. Alfa Laval CPM Valves parts are also available.


  • Safe, effective pressure control
  • Self-draining design
  • Excellent valve cleanability
  • Easy to install, simple to operate
  • High hygienic level
CPM Valve

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Alfa Laval CPM Valve Service Kits
Material CPMI-2-Kv23 CPMO-2-Kv23 CPMI-2-Kv2/15 Kv7 CPMO-2-Kv2/15 Kv9
Upper NBR and lower EPDM/PTFE, NBR O-ring 9611920218 9611920218 9611920218 9611920218
Upper and lower PTFE, FPM O-ring 9611920515 9611920515 9611920515 9611920515
Upper and lower EPDM/PTFE, FPM O-ring 9611920516 9611920516 9611920516 9611920516
Upper PTFE and lower EPDM/PTFE, NBR O-ring 9611920517 9611920517 9611920517 9611920517

Click the links below to browse our range of Regulating Valves.

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