Constant pressure valves
CPM
CPMI-2, CPMI-D60 and CPMO-2 are sanitary constant-pressure valves for use in stainless steel pipe systems.
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.
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.
CPMI-2 and CPM-I-D60 open at increasing product pressure and vice versa. CPMO-2 closes at increasing product pressure and vice versa.
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 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.
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.
 | CPMI-2
Connection: Welding ends
Material: 1.4404 (316L)
Seals, lower diaphragm: EPDM/PTFE
Other seals: NBR | CPMI-2-W-51-Kvs 23 EPDM | 175.1 | 193.4 | 49.2 | 110 | 6-9612 30 5501 | |
| CPMI-2-W-51.0-Kvs 7 EPDM | 175.1 | 193.4 | 49.2 | 110 | 6-9612 30 5517 | |
| CPMI-2-W-51-Kvs 2/15 EPDM | 175.1 | 193.4 | 49.2 | 110 | 6-9612 30 5503 | |
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 | CPMI-D60
Connection: Welding ends
Material: 1.4404 (316L)
Seals, lower diaphragm: EPDM/PTFE
Other seals: NBR | CPMI-D60-W-76.1-Kvs 60 EPDM | 413.2 | 430 | 155 | 240 | 6-31356 6141 1 | |
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 | CPMO-2
Connection: Welding ends
Material: 1.4404 (316L)
Seals, lower diaphragm: EPDM/PTFE
Other seals: NBR | CPMO-2-W- 51-Kvs 23 EPDM | 211.0 | 229.3 | 89.2 | 110 | 6-9612 30 5502 | |
| CPMO-2-W- 51-Kvs 2/15 EPDM | 175.1 | 193.4 | 49.2 | 110 | 6-9612 30 5504 | |
| CPMO-2-W-51-Kvs=9 EPDM | 175.1 | 229.3 | 49.2 | 110 | 6-9612 30 5518 | |
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| | CPMI-2
Connection: Welding ends
Material: 1.4404 (316L)
Seals, lower diaphragm: EPDM/PTFE
Other seals: NBR | CPMI-2-W-50-Kvs 23 EPDM | 175.1 | 193.4 | 50.4 | 110 | 6-9612 30 5505 | |
| CPMI-2-W-50-Kvs 7 EPDM | 175.1 | 193.4 | 50.4 | 110 | 6-9612 30 5519 | |
| CPMI-2-W-50-Kvs 2/15 EPDM | 175.1 | 193.4 | 50.4 | 110 | 6-9612 30 5507 | |
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| | CPMO-2
Connection: Welding ends
Material: 1.4404 (316L)
Seals, lower diaphragm: EPDM/PTFE
Other seals: NBR | CPMO-2-W-50-Kvs 23 EPDM | 211.0 | 229.3 | 86.3 | 110 | 6-9612 30 5506 | |
| CPMO-2-W-50-Kvs 2/15 EPDM | 175.1 | 193.4 | 50.4 | 110 | 6-9612 30 5508 | |
| CPMO-2-W-50-Kvs=9 EPDM | 175.1 | 229.3 | 50.4 | 110 | 6-9612 30 5520 | |
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 | Air pressure regulating valve
Range: 0-8 bar | Air regulating kit CPM | 186 | 93 | 54 | 47 | - | - | 6-31356 0150 1 | |
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 | Air throttling valve
| Throttle valve for CPM | 38 | 20 | - | - | - | - | 6-31356 0153 1 | |
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 | Booster for CPM
Booster 3 for cover with thread | Booster for CPMI-2 D60 | 95 | - | - | - | 165 | 110 | 6-31356 0090 1 | |
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