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14 General CR/EN (1004) 4.0
2.3 Type code
Pumps are available in various designs. The main characteristics of the pump are shown
in the type code.
Example: CR 50A-200 A-8 1CW-FX
Pump family
CR
CombiPro
Pump size
50A
discharge connection [mm]. A and B design pump types have the same
designation though they have different hydraulic performances
200
nominal impeller diameter [mm]
Pump casing material according to API 610
S-1
carbon steel
S-6
carbon steel
S-8
carbon steel
C-6
12% CHR
A-8
316 AUS
Impeller material according to API 610
S-1
cast iron
S-6
12% CHR
S-8
316 AUS
C-6
12% CHR
A-8
316 AUS
Shaft sealing code according to API 682
Arrangement 1
1CW-FX
Contacting single wet seal with a fixed throttle bushing
1CW-FL
Contacting single wet seal with a floating throttle bushing
Arrangement 2
2CW-CW
Liquid buffer fluid, Dual contacting wet seals
2CW-CS
Gas buffer fluid or no buffer fluid, Contacting wet inner seal with a
containment seal
2NC-CS
Gas buffer fluid or no buffer fluid, Non-contacting inner seal with a
containment seal
Arrangement 3
3CW-FB
Liquid barrier fluid, Contacting wet seals in a face-to-back configuration
3CW-BB
Liquid barrier fluid, Contacting wet seals in a back-to-back configuration
3CW-FF
Liquid barrier fluid, Contacting wet seals in a face-to-face configuration
3NC-BB
Gas barrier fluid, Non-contacting seals in a back-to-back configuration
3NC-FF
Gas barrier fluid, Non-contacting seals in a face-to-face configuration
3NC-FB
Gas barrier fluid, Non-contacting seals in a face-to-back configuration