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Disc Trap
When starting the device,firstly,the air and condensed water will flow across steam trap under rather low pressure,and lift valve plate through the entrance hole,and then discharge from the exit hole.After the pressure and temperature rise,the inner pressure will also rise,and cause increased amount of condensed water and increased flow rate,at the moment, the static pressure of valve plate declines which causes the drop of valve plate,and then,the steam flows from all directions via the exit hole into the gap between the valve plate and the valve cover.After steam enters the pressure chamber,it shuts down the valve by pressing valve plate onto the sealing ring.When the steam temperature inside the pressure chamber begins descending and the steam begins to congeal,the pressure declines in the pressure chamber,and the inlet pressure lifets the valve plate,and then the steam trap opens and discharge water.
Merits
1.Simple structure,easy installation and maintenance and water hammer resistant.
2.Water hammer resistant and on effect from abrupt change of pressure.
3.Adoptable for overheat steam system.
4.Adoptable for high-pressure and high-temperature steam pipes.
Technique parameter
|
Shell pressure grade |
Load leakage |
Used medium |
Shell material |
Permitted Backpressure rate |
1.6~4.0MPA |
0.3% |
Steam、 Condensate water |
Forged steel、 Stainless steel、 Alloy steel |
75% |
|
Maximum operating Pressure differential |
Use superheated steam |
Maximum allowable temperature |
Resis |
Pressure change range |
2.5MPA |
Excellence |
420℃~550℃ |
Adaption |
Adaption |
The materials of primary accessories
|
Part and component name |
Material |
|
Valve body、Valve cover |
Forged steel、Stainless steel、Alloy steel |
|
Valve plate |
High chrome stainless steel |
|
Valve seat |
STL Alloy |
|
Filtrating screen |
Stainless steel |
Prime out-form dimensions and weigh
|
Product model |
(DN) Calibre |
L Flange |
L Thread/ welding |
H1 |
H2 |
W |
(kg) weight |
(MPa) Pressure Change range |
(MPa) Nominal pressure |
129Y |
15-20 25 |
—— |
80 90 |
52 55 |
48 51 |
47 47 |
1.0 1.2 |
0.1-2.5 |
4.0 |
129YF |
15-20 25 |
150 160 |
—— |
52 55 |
48 51 |
47 47 |
2.9-3.2 4.0 |
0.1-2.5 |
4.0 |
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