TP50-240/2 Shaft Seals Manual

49
Pumped liquids
Shaft seals
Salts
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
Ammonium
bicarbonate
NH
4
Max. temp. [°C] 60 60 60 60 60
Max. conc. [%] 20 20 20 20 20
Suitability ++ – + – + – ++ – + –
Comments Decomposes in hot water.
Ammonium chloride
(sal ammoniac)
NH
4
Cl
Max. temp. [°C] 25 25 25 25 20 20 20 20
Max. conc. [%] 10 10 10 10 5 5 5 5
Suitability ++ ++ + + – – + + + +
Comments Shaft seal with flush/double shaft seal recommended; risk of pitting on stainless steel parts.
Ammonium sulphate
(NH
4
)
2
SO
4
Max. temp. [°C] 50 50 40 40
Max. conc. [%] 10 10 10 10
Suitability ++ – + – – – ++ – + –
Comments
Calcium acetate
Ca(CH
3
COO)
2
Max. temp. [°C] 80 80
Max. conc. [%] 30 30
Suitability ++ – – – – – ++ – – –
Comments Used as corrosion inhibitor.
Copper (II) sulphate
CuSO
4
Max. temp. [°C] 80 80 20 20
Max. conc. [%] 30 30 30 30
Suitability ++ ++ – – – – + + – –
Comments
Fixing salt
Max. temp. [°C] 80 80 80 80 80 80 80 80
Max. conc. [%] 20 20 20 20 20 20 20 20
Suitability ++ ++ ± ± – – + + ± ±
Comments
Magnesium sulphate
MgSO
4
Max. temp. [°C] 80 80 20 20
Max. conc. [%] 25 25 25 25
Suitability ++ ++ – – – – + + – –
Comments
Potassium
permanganate
KMnO
4
Max. temp. [°C] 90 20 90 20
Max. conc. [%] 10 1 10 1
Suitability ++ ± + ± – – – – – –
Comments
Sodium bicarbonate
NaHCO
3
Max. temp. [°C] 50 50 50 50 50 50 50 50 50 50
Max. conc. [%] 10 10 10 10 10 10 10 10 10 10
Suitability ++ + + + + + ++ + + +
Comments Baking powder; decomposes in hot water.
Sodium carbonate
Na
2
CO
3
Max. temp. [°C] 80 60 80 60 80 60 80 60 80 60
Max. conc. [%] 20 20 20 20 20 20 20 20 20 20
Suitability ++ + + + + + ++ + + +
Comments
Sodium nitrate
NaNO
3
Max. temp. [°C] 80 80 80 80 80 80 80 80 80 80
Max. conc. [%] 40 40 40 40 40 40 40 40 40 40
Suitability ++ ++ + + + + ++ ++ + +
Comments
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