Bellows Seal Trap LF
Overview
Bellows seal trap
The thermo-sensitive element of bellows seal traps is bellows filled with volatile liquid,which employs the volatility of the liquid and flexibility of the bellows.When temperature of the steam pipe goes up,the liquid volatilizes into gas,the size expands and produces pressure to impel bellows to stretch.In contrast,when temperature of the steam pipe goes down to the temperature for gas to turn into liquid,the size gets smaller and the bellows contract due to lack of impetus.
Merits
1.Convenient use due to adjustable water discharge temperature ranging from 70 to 100 degrees.
2.Capability to prevent discharge of high-temperature condensate so as to maintain heat energy of the steam pipe.
3.Continuous water discharge without noise.
4.Free from the effect of small fluctuation of steam pressure.
5.Simple structure,small size and easy installation.
6.Improvement of discharge capacity condensate by increasing diameter of bellows.
7.Good air diameter performance with resistance to coldness.
8.Zero leakage and backpressure ratio up to 75%.
Installation/attention for use
Before the installment of pipeline,use the steam to blow off the pollutant.The arrow shows the direction consistent with the flow direction.
Ahead of the trap,the thermal tube of 1～2 meters need no heat-preservation.Be installed at thermal position lower than the condensation water discharge point of the steam-using equipment.
Before leaving the plant,the hydrophobic temperature of trap has been adjust around 95℃.If it is needed to change the hydrophobic temperature or the displacement,open the shielding bonnet,loosen the lock nut,revolve the adjusting screw revolve the valve core clockwise,the hydrophobic volume reduces and the hydrophobic temperature drops;revolve it counterclockwise,the valve core backlashes,the hydrophobic volume increases,and the hydrophobic temperature rises.After the adjustment ended,tighten the lock nut.
It is needed to make the periodic maintenance and clear the pollutant before the filtration screen,so as to guarantee the trap work normally.
|
Shell pressure grade |
Maximum operating pressure differential |
Maximum allowable temperature |
Permitted backpressure rate |
|
|
1.6、2.5MPA |
1.6MPA |
350℃ |
75% |
|
|
Freezing resistance |
Air exhaust system |
Used medium |
Energy saving effect
|
Load leakage
|
|
Excellence |
Automatic |
Steam、 condensate water |
Excellence |
0% |
|
Part and component name |
Material |
|
Valve Body、Valve Cover |
Carbon steel、Stainless steel |
|
Reservoir |
Stainless steel、Volatile liquid |
|
Valve seat |
High chrome stainless steel、Four Fluorine |
|
Filtrating screen |
Stainless steel |
Product
model
Calibre
Flange
Thread/
welding
H1
H2
W
weight
Pressure
change
range
(MPa)
Nominal
pressure
LF
15~20
25
32~50
150
160
230
90
95
-
110
110
180
35
35
70
53
53
75
4.0
4.0
13
0.1-1.6
2.5
LF
65~80
100
120~150
250
310
350
-
205
100
170
23
25
35
0.1-1.6
2.5
Note
1.Please provide operating pressure and operating pressure difference,generating quantity of condensate water,operating temperature,connecting mode and standards in selecting product models.
2.The load of condensate Water's safety coefficient reaches 2 to 3 times in general.
3.Please make sure the drain valve is installed properly,maintained regularly,cleaned up and operates under the normal condition,so as to extend its service life.
Key specifications
| Valve Body, Valve Cover | Carbon steel, Stainless steel |
|---|---|
| Reservoir | Stainless steel, Volatile liquid |
| Valve seat | High chrome stainless steel, Four Fluorine |
| Filtrating screen | Stainless steel |
