TP32-160/2 Shaft Seals Manual

35
Types of shaft seals
Shaft seals
Type H for ø12, ø16 and ø22 mm shaft with tungsten
carbide/tungsten carbide seal faces
• The seal is suitable for use in CR/CRI/CRN pumps
for many applications, except for very hot water
(above +100°C). Can be replaced without disman-
tling the pump part.
• The strong seal carriers contribute considerably to
the cooling of the seal faces in case of dry running.
This makes the seal capable of withstanding several
minutes of dry running, despite the seal face mate-
rial combination.
There is no relation between the indication of suitability
and the pressure-temperature diagram, but together
they form the application profile.
Suitability
Pressure-temperature diagram
The pressure-temperature diagram is based on clean
water. The figures in the following table refer to the
pressure-temperature diagram.
Fig. 49 Pressure-temperature diagrams
Suitable
Suitable under
certain
conditions
Not
suitable
Alkaline liquids
Acid liquids
Dry running
Solid particles in liquid
Precipitating/lime-
containing liquids
Anti-freeze liquids
Pos. Range
1 Optimum duty range
2
Risk of periodical noise in connection with start-up and
variations in pressure and temperature
3 Risk of periodical noise
TM02 8447 0204
30
25
20
15
10
5
0
0 10 20 30
2
40 50 60 70 80 90 100 110 120 130 140 150
3
1
[bar]
[˚C]
30
25
20
15
10
5
0
0 10 20 30 40 50 60
70
80 90 100 110 120 130 140 150
[bar]
[˚C]
12 mm
1
2
3
30
25
20
15
10
5
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
[bar]
[˚C]
1
3
2
16 mm
22 mm
-40 -30 -20 -10
0
-40 -30 -20 -10
-40 -30 -20 -10