Inverted Bucket Steam Traps
WORKING PRINCIPLE
Inverted bucket steam traps work on buoyancy principle. As the name says, the mechanism consists of an inverted bucket with small hole for air vent on top of it, bucket connected to a valve by a lever.
- At the initial position the inverted bucket stays in lowermost position, once condensate enters the steam trap it flows through the bottom of the bucket filling the body, flows through the outlet.
- Once the steam enters the trap, it is caught inside the bucket, it makes the bucket buoyant. The bucket then raises and shuts the valve.
- The trap remains shut till the steam condenses reducing the buoyancy of the bucket, the bucket then sink, pulls off valve and the condensate discharges through the outlet.
FEATURES
- Discharge condensate intermittently at steam temperature
- Pennant inverted bucket steam traps are designed to withstand higher pressures and superheated steam.
- These traps can operate well against back pressures.
- Resistance to damage against freezing.
- Can withstand water hammer.
- The valve and valve seat are hardened by a special induction hardening process to withstand continuous, prolonged operation.
LIMITATIONS
- Water seal must always be maintained to ensure proper operation
- Cannot discharge condensate as it forms. There is always upstream condensate built-up.
- If bucket vent is blocked, the trap gets locked.
- Trap must be installed with Bucket in vertical direction to allow free operation.
- The trap should be installed below the equipment to be drained, otherwise the prime may be lost affecting the trap operation.
- Sudden inlet pressure reduction or Superheated steam may damage water prime.
TYPICAL APPLICATIONS OF INVERTED BUCKET STEAM TRAPS
- Heating coils
- Hot water heaters
- Steam separators
- Sterilizers
- Autoclaves
- Dryers
- Dehumidifiers
- Heat exchangers
MATERIAL
| NO | PART | MATERIAL | QTY. |
|---|---|---|---|
| 1. | BODY | CAST IRON | 01 |
| 2. | COVER | CAST IRON | 01 |
| 3. | BUCKET ASSLY | AISI 304 with CS reinforcing ring | 01 |
| 4. | VALVE SEAT | AISI 410/ 420 | 01 |
| 5. | VALVE PIN | 01 | |
| 6. | BRACKET | AISI 304 | 01 |
| 7. | LEVER | AISI 304 | 01 |
| 8. | PLUG | CARBON STEEL | 01 |
| 9. | GASKET | Non CAF | 01 |
| 10. | BOLT | High Tensile | – |
| 11. | NUT | High Tensile | – |
| 12. | PIPE | CARBON STEEL | 01 |
PT21
Inverted Bucket Steam Trap. Cast iron construction. SS Internals. Vertical configuration. End conns.: Screwed NPT / BSPT / BSP
Imperial
| PMA | TMA | PMO | TMO | Capacity Range (lbs/hr) | Size |
|---|---|---|---|---|---|
| 250 psig @ 38 degF | 428 degF | 250 psig @ all operating temperatures | 428 degF | 175 ~7050 | ½” ¾”1”1 ½” |
Metric
| PMO (bar) TMA (ºC) | Capacity at PMO (kg/hr) | Size |
|---|---|---|
| 17.5 / 220 | 350 530 2500 2600 | DN15 DN20 DN25 DN40 |
PT22
Inverted Bucket Steam Trap. Cast iron construction. SS Internals. Horizontal configuration. End conns.: Screwed NPT / BSPT / BSP
Imperial
| PMA | TMA | PMO | TMO | Capacity Range (lbs/hr) | Size |
|---|---|---|---|---|---|
| 250 psig @ 38 degF | 428 degF | 250 psig @ all operating temperatures | 428 degF | 88 ~ 660 | ½” ¾” |
Metric
| PMO (bar) TMA (ºC) | Capacity at PMO (kg/hr) | Size |
|---|---|---|
| 10.5/ 220 | 265 | DN15, 20 |
PT23 / PT23L
Inverted Bucket Steam Trap with integral strainer. Cast iron construction. SS internals. Horizontal configuration. End conns.: Screwed NPT / BSPT / BSP
Imperial
| PMA | TMA | PMO | TMO | Capacity Range (lbs/hr) | Size |
|---|---|---|---|---|---|
| 250 psig @ 38 degF | 428 degF | 250 psig @ all operating temperatures | 428 degF | 88 ~ 1960 | ½” ¾” 1 |
Metric
| PMO (bar) TMA (ºC) | Capacity at PMO (kg/hr) | Size |
|---|---|---|
| 11 / 220 12.5 / 220 14 / 220 |
280 390 565 |
DN15 DN20 DN25 |
PT24 / PT24L
Inverted Bucket Steam Trap for high pressure steam systems. Vertical configuration. Cast Steel construction. SS internals. End conns.: SW / FL
Imperial
| PMA | TMA | PMO | TMO | Capacity Range (lbs/hr) | Size |
|---|---|---|---|---|---|
| 925 psig @ 38 degF | 950 degF | 925 psig @ all operating temperatures | 950 degF | 200 ~ 22025 | ½”,¾”, ¾”, 1”, 1 ¼”, 1 ½”, 2” |
Metric
| PMO (bar) TMA (ºC) | Capacity at PMO (kg/hr) | Size |
|---|---|---|
| 65 / 510 | 3860 | DN15, 20, 25, 40, 50 |
PT25 / PT25L
Inverted Bucket Steam Trap with inbuilt strainer. Cast Steel construction. SS Internals, Horizontal configuration. End conns.: Screwed NPT / BSPT / BSP / SW / FL
Imperial
| PMA | TMA | PMO | TMO | Capacity Range (lbs/hr) | Size |
|---|---|---|---|---|---|
| 350 psig @ 38 degF | 800 degF | 350 psig @ all operating temperatures | 800 degF | 175 ~ 9690 | ½”,¾”, 1” |
| 350 psig @ 38 degF | 650 degF | 350 psig @ all operating temperatures | 650 degF | 2205 ~ 23790 | 1½”,2” |
Metric
| PMO (bar) TMA (ºC) | Capacity at PMO (kg/hr) | Size |
|---|---|---|
| 25 / 426 | 430 1800 2500 10800 | DN10,25 DN20,25 DN25 DN40,50 |