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Industrial
Hygienic
Instrumentation

 


CPM CONSTANT PRESSURE MODULATING VALVE


IMPLEMENTATION
CPMI-2,CPMDI-60 and CPMO-2 sanitary fixed pressure valves are used in stainless steel pipe systems.   CPMI-2 and CPMDI-60   (fixed pressure inlet modulation) ensures fixed pressure at the valve inlet on the process line. Typical application areas of the valve are its use after heat exchanger, separator and overflow valve.

It ensures fixed pressure at the valve outlet on the CPMO-2 (fixed pressure outlet modulation) process line. Typical application area of the valve is its use before filling/bottling, etc.


CPM-2 Valve


Figure 1:  Operation procedure



















OPERATION PRINCIPLE
CPMI-2 and CPMO-2 valves are remotely controlled valves which run on pressurized air.  Valves run on the manufacturing line without using a transmitter. Pressure setting valve and manometer are used only for pressurized air which is required for the valve. A diaphragm/valve sealing plug system instantly responds to any change in pressure on the product line and changes its position to ensure preset pressure.

CPMI-2 opens when product pressure increases, or closes otherwise.
(see Figure 1)





CPMI-2
CPMO-2


a) Reduced product pressure






















STANDARD DESIGN
The valve consists of a valve body with a seat, upper cover, clamp and valve sealing plug which contain the diaphragm unit. The valve consist of a stainless disc placed in to a flexible diaphragm that separates the two parts of the valve. Upper cover valve body and seat are welded together.











CPMI-2
CPMO-2


b) Increased product pressure





TECHNICAL DATA
Max. Product Pressure ............................................. 1000 kPa (10 bar)
Min. Product Pressure .............................................. 0 kPa (0 bar)
Temperature Range .................................................. 10°C to 95°C (EPDM)
Air pressure (CPMI-2/CPMO-2)................................. 0 - 800 kPa (0 - 8 bar)
Air pressure (CPM-I-D60).......................................... 0 - 600 kPa (0 - 6 bar)
Flow Kv 23, fully open (Dp = 1 bar)........................... Approximately 23 m3/h
Flow Kv 7 (Δp = 1 bar) ............................................. Approximately 7 m3/h
Flow Kv 9 (Δp = 1 bar) ............................................. Approximately 9 m3/h
Flow Kv2/15 (Δp = 1 bar).......................................... Approximately 2 m3/h
Flow range Kv60, fully open
(Δp = 1 bar) (CPM-I-D60........................................... Approximately 60 m3/h



PHYSICAL DATA
Materials that come
into contact with the product................................... 1.4404 (316L)
Other Materials....................................................... 1.4301(304)
Lower Membrane ..................................................  PTFE Coated EPDM
Upper Membrane...................................................  NBR
Air Fittings .............................................................. R 1/4” (BSP), annular gear








DIMENSIONS:










































                    b. CPMO-2



































SIZES and ITEM NUMBERS

Product Code: 5284