Steam Traps

Inverted Bucket Steam Traps

The inverted bucket is the most reliable steam trap operating principle known. The heart of its simple design is a unique leverage system that multiplies the force provided by the bucket to open the valve against pressure. inverted bucket steam traps open and close based on the difference in density between condensate and steam-the inverted bucket principle. They open and close gently, minimizing wear. This simple fact means that inverted buckets are subject to less wear than some other types of traps.Inverted Bucket Steam Traps belong to the family of mechanical traps. They operate on the difference in density between steam and water.
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Inverted Bucket Steam Traps
Inverted bucket steam traps
Inverted bucket steam traps
API Inverted bucket steam traps

1.Inverted bucket steam traps Features

  • Temperature: 425 ℃
  • Working Media: Steam, Condensate Water
  • End Connection: Flange, Screwed & Socket Weld
  • Size:1/2" - 3"
  • Inverted Bucket Steam Trap
  • Stainless Steel Internal strainer
  • 90% Back Pressure
  • With Air Vent On The Top

2.Inverted bucket steam traps Working principle

Inverted bucket steam trap using the density contrast of condensate water and steam to work. The internal structure is lever system connect with inverted bucket. The inverted bucket steam trap has a down facing inverted bucket as hydraulic sensor in order to overcome the steam pressure. When the device starts, in the pipeline appears the air and the low temperature condensate water.

The Inverted bucket steam trap is full opening in this time, the condensate water rapidly discharges, the temperature rises quickly. The steam enters into inverted bucket which will produce upward buoyancy and the lever impetus valve core to close the valve. It has one hole in the inverted bucket which releases the air automatelly.

When a little of steam discharges from the hole, the remainder steam will form condensate water. The inverted bucket loses the buoyancy and downward, the lever impetus the valve core to open the valve. When the steam enters into the inverted bucket, the valve closed again, circulate working, interrupted draining water.

3.Water discharge capacity of the inverted bucket type steam trap.(KG/HR) when you select the model,pls take 2-3 times of safety factor into consideration.

Type L880 L881
L881F
81
L882
L882F
82
L883
L883F
83
L884
L884F
84
L885
L885F
85
L886
L886F 86
0.5 240 420 800 1520 2500 3960 7190
1 280 470 930 1750 2950 4500 8600
2 230 460 930 1800 3020 4500 8150
4 280 410 920 2000 3050 4400 8800
6 280 380 800 1560 2600 4600 8000
8 310 420 900 1750 2950 4900 8850
10 260 365 660 1550 2550 4500 8450
12 200 380 720 1730 2880 4850 9000
15 230 335 560 1500 2500 3000 8400
17 250 350 600 1550 2600 3200 8650
21 -- 240 860 1200 2200 3400 7200
25 250 900 1300 2400 2900 2900 7800

4.Technological parameter date

Model Nominal diameter(DN) Connection Max Pressure(kg/m2) Max allowable TMP(℃) External dimensions(mm) Referece weight(kg)
L H1 H2 W
L880 15~20 Thread 17 350 128 76 70 96 2.2
L881 15~25 28 350 128 76 100 96 2.8
L882 15~25 27 350 170 96 137 145 7.0
L883 25~32 31 350 202 121 193 180 14.0
L884 32~40 37 350 235 152 212 203 23.0
L885 32~50 25 350 260 232 222 228 26.0
L881F 15~25 Flange 28 350 195 76 100 96 5.0
L882F 20~25 27 350 230 96 137 145 10.0
L883F 25~32 31 350 270 121 193 180 18.0
40~50 320
L884F 32~50 37 350 320 152 212 203 27.0
L885F 40~50 25 350 350 232 222 228 29.0
L816F 65~80 35 350 400 214 242 302 45.0

5.The essential to order

  1. According the maximum steam consuming capacity multiply the selected magnification of steam equipment (2-3 times) in order to choose the displacement of trap for the maximum condensate water capacity
  2. The maximum differential pressure of trap (The front operating pressure minus the back pressure of valve ) should be noted if has back pressure.
  3. The maximum operating temperature of the trap
  4. The operating condition of the trap
  5. Ends connection6.Body material

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