KRAL C Series - Page 7

3 Identification
3.1 Type code
Item Classification Description
3 Shaft seal A Standard mechanical seal
B Mechanical seal of hard material
C Standard radial shaft seal
D Magnetic coupling
E Mechanical seal with quench
F Shaft seal PTFE with quench
G High-pressure radial shaft seal
H Mechanical seal balanced
J Stuffing box packing
L Mechanical seal with throttle ring
X Special design
4 Bearing, heating A Inner bearing without heating system
B Outer bearing without heating system
E Inner bearing with fluid heating system
F Outer bearing with fluid heating system
X Special design
5 Cartridge housing
material, outer
housing material
A Cartridge housing aluminium, outer housingGJSPN40
B Cartridge housingGJS, outer housingGJSPN40
C Cartridge housing aluminium, outer housingGJSPN63
D Cartridge housingGJS, outer housingGJSPN63
E Cartridge housing aluminium, outer housingsteel PN63
F Cartridge housingGJS, outer housingsteelPN63
G Cartridge housing aluminium, without outer housing
H Cartridge housingGJS, without outer housing
X Special design
6 Pressure stage,
type, overflow
valve material
A 0–9.9bar, circulation valve,GJS (up to sizeCG210)
B 0–5.9bar, circulation valve,GJS (from sizeCG235)
C 6.0–9.9bar, circulation valve,GJS (from sizeCG235)
D 10.0–15.9bar, circulation valve,GJS
E 16.0–24.9bar, circulation valve,GJS
F 25.0–40.0bar, circulation valve,GJS
G 0–9.9bar, non-return valve,GJS (up to sizeCG210)
H 0–5.9bar, non-return valve,GJS (from sizeCG235)
J 6.0–9.9bar, non-return valve,GJS (from sizeCG235)
K 10.0–15.9bar, non-return valve,GJS
L 16.0–24.9bar, non-return valve,GJS
M 25.0–40.0bar, non-return valve,GJS
N Steel
Z Without valve
X Special design
7 Completion P Pump with free shaft end
K Pump with completion (without motor)
F Pump unit with completion
8 Version index For internal administration
Tab.2: Type code
Operating instructions
OIC 18en-GB Edition 2020-01
7