Alfa Laval® CPMO-2 Constant Pressure Modulating Outlet Valve

The Alfa Laval CPMO-2 (Constant Pressure Modulating Outlet) is a sanitary constant pressure valve for use in stainless steel pipe systems. The CPMO-2 maintains a constant pressure in the process line at the outlet side of the valve.

A CPMO-2 valve is typically used before filling or bottling machines and in other applications where constant pressure must be maintained.

CPMO-2 is authorized to carry the 3-A symbol.

WORKING PRINCIPLE

CPMO-2 is remotely controlled by means of compressed air. The valve operates without a transmitter in the product line and requires only a pressure regulating valve for the compressed air and a pressure gauge in the product line.

A diaphragm/valve plug system reacts immediately to any alteration of the product pressure and changes position so that the preset pressure is maintained. CPMO-2 closes at increasing product pressure and vice versa.

Alfa-Laval-CPMO-2-reduced-increased-product-pressure
STANDARD DESIGN

The CPMO-2 consists of a valve body with valve seat, cover, a valve plug with a diaphragm unit, and a clamp. The diaphragm unit consists of a stainless steel disc—which is divided into sectors—and flexible diaphragms that are placed on each side of the sectors. The cover and the valve body are clamped together. The valve body and the seat are welded together. The CPMO-2 meets 3-A standards.

MATERIALS TABLE
Product Wetted Steel Parts 316L
Other Steel Parts 304
Lower Diaphragm PTFE covered EPDM rubber (standard)
Solid PTFE (optional)
Upper Diaphragm Nitrile (NBR) standard
PTFE covered EPDM rubber (optional)
Solid PTFE (optional)
O-ring Buna (standard)
Fluorinated rubber (FPM) covered EPDM rubber (optional)
Finish 32 Ra
TECHNICAL DATA TABLE
Max Product Pressure 145 psi
Min Product Pressure 0 psi
Max Product Viscosity 500 cps
Temperature Range 14 – 203°F
Temperature Range with PTFE/EPDM Upper Diaphragm 14 – 286°F (higher on request)
Air pressure 0 – 116 psi
Air connections R ¼ inch (BSP), internal thread

Pressure Drop/Capacity Diamgrams

Alfa-Laval-CPM-2-Cv-27-pressure-dropAlfa-Laval-CPMO-2-Cv-11-pressure-drop
Alfa-Laval-CPM-2-Cv-2-18-pressure-drop

Dimensions

Cv 27 Cv 11 Cv 2/18
A1 (in) 9.40 7.96 7.96
A2 (in) 10.44 8.80 8.80
C (in) - - -
OD (in) 2.31 2.31 2.31
ID (in) 2.16 2.16 2.16
t (in) 0.073 0.073 0.073
E (in) 4.05 2.23 2.23
F (in) 0.83 0.83 0.83
G (in) 5.01 5.01 5.01
H (in) 9.24 9.24 9.24
Tri-Clamp (in) 0.96 0.96 0.96
Seat Diameter (in) 1.91 1.41 1.41
Weight (lb) 13.99 13.99 13.99
Alfa-Laval-CPMO-2-dimensions

Options

ORDERING OPTIONS
  • Plug size (Cv 23, Cv 8, Cv 10, or Cv 2/18)
  • Diaphragm type if not standard
  • Connections if not welding ends
  • Optional equipment if needed
OPTIONAL EQUIPMENT
  • Male parts or clamp liners in accordance with required standard
  • Pressure gauge 0 – 87 psi, 1½ inch
  • Pressure gauge 0 – 145 psi, 1½ inch
  • Air pressure regulating valve kit, 0 – 116 psi
  • Air throttling valve for adjustment of regulating speed for the CPM-2 valve
  • Booster for product pressure (product pressure = 1.8 x air pressure) exceeding the available air pressure
  • 3-A Sanitary Standard labelling on request

Product Resources

See all resources by Alfa Laval

Spare Parts

CPMO-2 Spare Parts
PartKv23Kv2/15Diagram Key
Top Handle961199295896119929581
Washer961199255996119925592
Top313560003431356000343
Washer961199078696119907864
Screw961199122296119912225a
Clamp Handle961233700196123370015b
Clamp961233520196123352016
Cover313560067131356006717
Air Fitting88139750881397507a
O-Ring, NBR22340649223406498
O-Ring, FPM961199225396119922538
Guide313560072231356007229
Upper Diaphragm, NBR3135600142313560014210
Upper Diaphragm, EPDM/PTFE3135600144313560014410
Upper Diaphragm, PTFE9612305702961230570210
Inner Ring3135600631313560063111
Support Sector3135600621313560062112
Outer Ring9612305801961230580113
Lower Diaphragm, EPDM/PTFE9612306601961230660114
Lower Diaphragm, PTFE9612305701961230570114
Valve Plug9612306001961230620115
Valve Body, Weld9612334101961233420116

CPMO-2 Parts List

Service Kits
Kv24Kv2/15
96119202189611920218

CPMO-2 Parts List

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