ky Control the Pressure of your System CPM Constant-Pressure Modulating Valve Concept CPMI-2, CPMI-D60 and CPMO-2 are sanitary constant-pressure valves. 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 are after separators, heat exchangers or 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 are before filling/bottling machines etc. Working principle The valves are remote-controlled by means of compressed air. A diaphragm/valve plug system reacts immediately to any alteration of the product pressure and changes position so that the preset pressure is maintained. Standard design 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 cover and the valve body are clamped together. The valve body and the seat are welded together. 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 cover and the valve bodies are clamped together. . TECHNICAL DATA PHYSICAL 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 (∆p = 1 bar): . . . . . . . . . . Approx 7 m3/h. Flow Kv 9 (∆p = 1 bar): . . . . . . . . . . Approx 9 m3/h. Flow Kv2/15, low capacity (∆p = 1 bar): Approx 2 m3/h. (Alternative size) . . . . . . . . . . . . . . . (regulating area). Approx. 15 m3/h. (CIP area). Flow range Kv60, fully open (∆p = 1 bar) (CPM-I-D60) . . . . . . . . . . . . . . . . . Approx 60 m3/h. Materials Product wetted steel parts: Other steel parts: . . . . . . Lower diaphragm: . . . . . . Upper diaphragm . . . . . . Air Connections R 1/4" (BSP), internal thread. 1.4404 (316L). 1.4301(304). PTFE covered EPDM rubber NBR

Options A. Male parts or clamp liners in accordance with required standard. B. Air pressure regulating valve kit, 0-8 bar. C. Air throttling valve for adjustment of regulating speed for the CPM-2 valve. D. Booster for product pressure exceeding the available air pressure. (Product pressure = 1.8 x air pressure). E. US 3A version available on request for CPM-2 valves only 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...

Pressure drop/capacity diagrams For all diagrams the following applies: Measurement: In accordance with VDI 2173. Alfa Laval recommend max. flow velocity in tubing and valves to be 5 Select: CPM-2, Kv 23 which at working point will be 48% open. Select: CPMI-2, Kv 2/15 which at working point will be approx. 35% open equal to about 50% of the regulating area. Example of using the diagram: Always try to get as close as possible to the 50% open curve. If the CPM-I-D60 is too big select from the CPMI-2 curves.

OD (Inch/DN) ID (Inch/DN) t (Inch/DN) E (Inch/DN) F G G1 G2 H M/ISO clamp M/ISO male M/DIN male M/SMS male M/BS male Seat diameter Weight (kg) Alfa Laval reserves the right to change specifications without prior notification. ALFA LAVAL is a trademark registered and owned by Alfa Laval ESE00284EN 1406 How to contact Alfa Laval Contact details for all countries are continually updated on our website. Please visit www.alfalaval.com to access the information direct.