Alfa Laval CPM Constant Pressure Valve

CPMI-2, CPMI-D60 and CPMO-2 are sanitary constant-pressure valves for use in stainless steel pipe systems.

 

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Product detail

  • Product code
    Alfa Laval - CPM
  • APPLICATIONS
    Dairy, food and beverage industries
Automated, closed system

Concept

CPMI-2 and CPMI-D60 (Constant-Pressure Modulating Inlet) maintain a constant pressure in the process line at the inlet side of the valve. Typical applications of CPMI-2 and CPMI-D60 are after separators, heat exchangers etc. and as overflow valves.

CPMO-2 (Constant-Pressure Modulating Outlet) maintains a constant pressure in the process line at the outlet side of the valve. Typical applications of CPMO-2 are before filling/bottling machines etc.

 

Working principle

CPMI-2, CPM-I-D60 and CPMO-2 are remote-controlled by means of compressed air. The valves operate without a transmitter in the product line and require 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.

Automated level control

Standard Design-CPMI/O-2

The CPMI-2 and CPMO-2 consist 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 of flexible diaphragms, which 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.

 

Standard Design-CPMI-D60

The CPM-I-D60 consists of upper and lower valve bodies, an inlet tube, a cover, a valve plug with diaphragm unit and clamps. The diaphragm unit consists of two flexible diaphragms supported by 12 stainless steel sectors in between them. The cover and the valve bodies are clamped together.

Technical specifications

  • Product code
    Alfa Laval - CPM
  • APPLICATIONS
    Dairy, food and beverage industries
 

TECHNICAL DATA

Max. product pressure: . . . . . . . . . . 1000 kPa (10 bar).
Min. product pressure: . . . . . . . . . . 0 kPa (0 bar).
Temperature range: . . . . . . . . . . . . . 10°C to 95°C (EPDM).
Temperature range with upper diaphragm
in PTFE/EPDM: . . . . . . . . . . . . . . . 10° C to +140° C.
(Higher on request).
Air pressure (CPMI-2/CPMO-2): . . . . . 0 to 800 kPa (0 to 8 bar).
Air pressure (CPM-I-D60): . . . . . . . . 0 to 600 kPa (0 to 6 bar).
Flow Kv 23, fully open (Dp = 1 bar): . . Approx 23 m3/h.
Flow Kv 7 (Δp = 1 bar): . . . . . . . . . . Approx 7 m3/h.
Flow Kv 9 (Δp = 1 bar): . . . . . . . . . . Approx 9 m3/h.
Flow Kv2/15, low capacity (Δp = 1 bar): Approx 2 m3/h.
(Alternative size) . . . . . . . . . . . . . . . (regulating area). Approx. 15
m3/h. (CIP area).
Flow range Kv60, fully open (Δp = 1 bar)
(CPM-I-D60) . . . . . . . . . . . . . . . . . Approx 60 m3/h.

PHYSICAL DATA

Materials

Productwetted steel parts: . . . . . . . . 1.4404 (316L).
Other steel parts: . . . . . . . . . . . . . . 1.4301(304).
Lower diaphragm: . . . . . . . . . . . . . . PTFE covered EPDM rubber
Upper diaphragm . . . . . . . . . . . . . . NBR

 

Diaphragm Unit

CPMI-2 and CPMO-2: The diaphragm unit consists of a stainless steel disc which is divided into sectors and of flexible diaphragms which are placed on each side of the sectors. CPM-I-D60: The diaphragm unit consists of two flexible diaphragms supported by 12 stainless steel sectors in between them.

 
CPM Constant Pressure Modulating Valve 1063476 kB
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