TP80-80/4 Shaft Seals Manual

51
Pumped liquids
Shaft seals
Water
Legend
++ = Best solution
+ = Suitable
± = Suitable under certain conditions
– = Not suitable
Liquid
Shaft seal (EN 12756)
Rotating face:
Stationary seat:
Secondary seal:
Spring:
Other parts:
Q
Q
E
G
G
Q
Q
V
G
G
B
Q
E
G
G
B
Q
V
G
G
B
V
E
G
G
B
V
V
G
G
U
U
E
G
G
U
U
V
G
G
B
U
E
G
G
B
U
V
G
G
Boiler feed water
Max. temp. [°C] 120 140 80 90 80 140 80
Max. conc. [%]
Suitability ++ – + ± + + – – + +
Comments Seal face needs to be SiC
G
.
Calcareous water
Max. temp. [°C] 90 80 90 80
Max. conc. [%]
Suitability ++ + – – – – ++ + – –
Comments
Chlorine-containing
water (unsalted)
Max. temp. [°C] 40 40 40 40 40 40 40 40 40 40
Max. conc. [%]
Suitability ++ ++ ++ ++ ++ ++ ++ ++ ++ ++
Comments Max. 5 ppm free chlorine (Cl
2
); swimming baths and chlorinated potable water.
Demineralized water
(desalinated)
Max. temp. [°C] 90 80 140 80 90 80 90 80 140 80
Max. conc. [%]
Suitability ++ –±±+++++++
Comments Seal face needs to be SiC
G
.
Domestic hot water
Max. temp. [°C] 120 80 140 80 90 80 90 80 140 80
Max. conc. [%]
Suitability ++ + ++ + + + + + ++ +
Comments
Risk of lime precipitation at temperatures above +60°C.
Seal face needs to be SiC
G
.
Oil-containing water
Max. temp. [°C] 80 80 80 80 80
Max. conc. [%]
Suitability – + – ++ – + – + – ++
Comments
Ozone-containing
water
Max. temp. [°C] 40 40 40 40 40 40 40 40 40 40
Max. conc. [%]
Suitability ++ ++ ++ ++ ++ ++ ++ ++ ++ ++
Comments 1 ppm ozone (O
3
); soluble in water at 0°C.
Softened water
Max. temp. [°C] 120 80 140 80 90 80 90 80 140 80
Max. conc. [%]
Suitability + + ++ + + + + + ++ +
Comments Seal face needs to be SiC
G
.
Steam-containing water
Max. temp. [°C] 140 90 140 80 140 80
Max. conc. [%]
Suitability – – ++ + + + – – ++ +
Comments