inverted bucket steam trap Inverted bucket type steam trap,as amechanical steam trap, has outstanding performance and can be used low ,medium and high pressure. Details. Pressure Rating: 1.6- 4.0Mpa Specification: Screwed:DN15-50Material: cast steel Standard flanges: DIN, ANSI, JIS, JB79 Standard screwed: NPT   Inverted Bucket Steam Trap (Mechanical Steam Trap ) Working Principle The design makes use of the working principle of difference in density of steam and condensate. The compound lever is connected to the inverted bucket inside the valve,working on steam pressure switch.The inverted bucket is a level sensor in the steam trap with opening downward.When the device starts up ,air and low-temperature condensate enter into the tube.At this time ,the trap is completely open,allowing quick discharge of air and low-temperature condensate and temperature rising. Steam entering into the inverted bucket causes it to float.and the lever arm drives the valve corce to close. A small vent in the bucket may automatically discharge the air.Some part of the steam will be discharged from the vent ,and other part of the steam will become condensate.The inverted bucket will sink without buoyant force, and then the lever arm will help the valve core to open the valve. When the valve is open, steam will get into the bucket again,causing the valve to close again. The device will work circularly and discharge water discontinuously. Inverted Bucket Steam Trap(Mechanical Steam Trap)Structural characteristic  Inverted bucket type steam trap,as amechanical steam trap, has outstanding performance and can be used low ,medium and high pressure.It applies stainless steel internal components and heat treatable steel base . It has such features as strong structure,resistance to abrasion and corrosion, long durability, and not easy to be damaged. It is highly recommended to be used for condensate recovery sustem for its steam saving capability, High heat engine efficiency, and anti-back pressure characteristic. The trap may be assembled with check valve so as to save piping space. Correct conditions for choice of configurations when placing an order:  The user may choose the discharge capacity of trap as per max. condensate which is equal to max. steam consumption of the machine by multiplying factor (2-3 times) . Max. operating differential pressure of trap( namely, working pressure before the valve minus the back pressure behind the valve.It shall be specified if there is any back pressure.Maximun working temperature of the trap ,Drainage operating mode ,Connecting model, Valve materials. Inverted Bucket Steam Trap material of main component  Name of component Material of component Valve body, valve cover WCB Internal components stainless steel Valve body, valve cover WCB Internal components stainless steel The table below shows the water discharge capacity of the inverted bucket type steam trap (KG/KR), When making a choice users should take 2-3 times safety factor into consideration. Product model 880 881 881F 81 882 882F 82 883 883F 83 884 884F 84 815 815F 85 816 816F 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 7800 connecting dimension (mm) 880-885, side enter and side out,with filter screen, external dimension (mm): Model DN A C D B Maximum pressure kg/cm 2 880 1/2 '' 3/4 '' 96 128 70 146 25 881 1/2 '' 3/4 '' 1 '' 96 128 100 176 41 882 3/4 '' 1 '' 145 170 137 231 25 883 1 '' 1 1/4'' 180 202 193 313 25 884 1 1/4' 1 1/2'' 203 232 212 362 25 885 1 1/2'' 2 '' 220 250 248 396 25     881F-886F, Flange, with filter screen, external dimension (mm): Model DN A C D B Maximum pressure kg/cm 2 881F 15. 20 .25 96 170 100 176 25 882F 20 .25 145 210 137 131 41 883F 25 .32 180 270 193 314 25 884F 32 .40 203 320 212 362 25 885F 40 .50 220 320 248 396 25 886F 65 .80 265 400 310 799 25     81-86, From below enter to upper , external dimension (mm): Model DN A B Maximum pressure kg/cm 2 81 1/2 '' 108 162 25 82 3/4 '' 1 133 203 25 83 1 '' 162 273 25 84 1 1/4'' 184 314 25 85 1 1/2'' 216 380 25 86 2 '' 260 432 25