Inverted Bucket Type Steam Trap operates by the basic principles of steam being less dense than the liquid. The system is a mechanical trap that works with an upside down bucket that has a bleed hole on top. The bucket is place right up on the inlet into the chamber and covers the incoming air or steam. Once the inlet allows the condensate inside, the BT-16 Inverted Bucket Steam Trap gets all the condensate with steam in it. The steam makes the bucket to float inside the camber. A lever attached to the outlet valve simple moves towards the closing position. Once the bucket has raised enough, the outlet valve is closed. As the 200 Series Inverted Bucket Steam Traps are in the closed position, the steam is allowed to escape through the bleed hole on top of the bucket into a cone shaped top of the chamber, there the steam has no place to move and starts to condense under the pressure built up by the inflow of the liquid.
Inverted Bucket Type Steam Trap
Vertical Inverted Bucket Steam Trap
Inverted Bucket Steam Trap
Once the steam has escaped the bucket and has condensed, the bucket lowers into the 800-813 Series Inverted Bucket Steam Traps and the lever attached opens the outlet valve. The operation continues in a cycle opening and closing the valve as steam enters and condenses inside the chamber. There are different types of traps made up of different materials and in different sizes and dimensions such as the 400 Series Inverted Bucket Steam Traps and others. The pressure capacities, operating temperatures and outflow rates are determined by the dimensions, materials and pressure classes of the traps.
| Size | 1" |
| Connection | NPT |
| Weight (lbs) | 30 |
| Orifice Size | 3/16" |
| Model No. | 211 | 212 | 213 | 214 | 215 | 216 |
| Pipe Connections | 15 | 15 – 20 | 15 – 20 – 25 | 25 – 32 | 25 – 32 – 40 | 40 – 50 |
| Test plug | 1/8" | 3/8" | 1/2" | 1/2" | 3/4" | 1" |
| “A” Flange Diameter | 108 | 133 | 162 | 190 | 216 | 259 |
| “B” Face-to-Face (screwed) | 162 | 203 | 273 | 317 | 364 | 432 |
| “BB” Face-to-Face (flanged PN40*) | 282 | 320 - 330 | 390 - 400 - 392 | 436 - 440 | 484 - 494 - 494 | 562 - 568 |
| Number of Bolts | 6 | 8 | 6 | 8 | 8 | 12 |
| Weight in kg (screwed) | 2.7 | 5.2 | 9.2 | 15.0 | 20.3 | 35.2 |
| Weight in kg (flanged PN40*) | 4.1 | 7,0 – 7,6 | 11 – 11,6 – 12 | 18,6 – 20,2 | 21 – 22,7 – 23 | 39,6 – 41,2 |
| Maximum allowable pressure | 17 bar @ 232°C |
| Maximum operating pressure | 17 bar |
| Maximum back pressure | 99% of inlet pressure |
| Maximum allowable pressure | 17 bar @ 232°C |
| Maximum operating pressure | 10 bar |
Cast Iron Inverted Bucket Type Steam Trap
Stainless Steel Vertical Inverted Bucket Steam Trap
Carbon Steel Bucket Steam Trap
ASTM A216 Gr. WCB Inverted Bucket Steam Trap
Stainless Steel 304 Tlv Inverted Bucket Steam Trap
GS-C25 cast steel Mechanical Inverted Bucket Trap
| Maximum back pressure | 99% of inlet pressure |
| Model No. | 800* | 811 | 812 | 813 |
| Pipe Connections | 15 – 20 | 15 – 20 – 25 | 15 – 20 | 20 – 25 |
| Test plug | 1/4" | 1/4" | 1/2" | 3/4" |
| “B” Height | 138 | 175 | 230 | 298 |
| “C” Face-to-Face (screwed) | 127 | 127 – 127 – 133 | 165 | 197 |
| “CC” Face-to-Face (flanged PN40**) | 195 – 191 | 195 – 191 – 197 | 233 – 229 | 261 |
| “D” Bottom to CL Inlet | 70 | 108 | 137 | 179 |
| Number of Bolts | 6 | |||
| Weight in kg (screwed) | 2.3 | 2.7 | 6.8 | 12.5 |
| Weight in kg (flanged PN40**) | 3,6 – 4,3 | 4,1 – 4,3 – 4,8 | 8,2 – 9,0 | 14,3 – 14,8 |
| Maximum allowable pressure | 17 bar @ 232°C |
| Maximum operating pressure | 17 bar |
| Maximum back pressure | 99% of inlet pressure |