| Model | 413 | 415 | 416 |
| Maximum Capacity | 4,400 lb/hr (1,996 kg/hr) |
11,000 lb/hr (4,990 kg/hr) |
20,000 lb/hr (9,072 kg/hr) |
| Maximum Allowable Pressure | 1,050 psig (72 bar) |
1,080 psig (74 bar) |
1,350 psig (93 bar) |
| Maximum Allowable Temperature | 850°F (454°C) |
850°F (454°C) |
850°F (454°C) |
| Body Material | ASTM A182 F22 Forged Steel |
ASTM A182 F22 Forged Steel |
ASTM A182 F22 Forged Steel |
| Maximum Operating Pressure | 1,000 psig (69 bar) |
1,000 psig (69 bar) |
1,000 psig (69 bar) |
| Connection Type | Screwed Socketweld Flanged |
Screwed Socketweld Flanged |
Screwed Socketweld Flanged |
| Connection Size | 1/2″ (15 mm) 3/4″ (20 mm) 1″ (25 mm) |
1″ (25 mm) 1-1/4″ (32 mm) 1-1/2″ (40 mm |
1-1/2″ (40 mm) 2″ (50 mm) |
| Flow Direction | Vertical | Vertical | Vertical |
400 Series Inverted Bucket Steam Traps in forged chrome molly steel for vertical installation with a choice of screwed, socket weld or flanged connections.
A unique leverage system multiplies the force provided by the bucket to open the valve against system pressure. The mechanism is free-floating and has no fixed pivots to create wear or friction.
Because the mechanism is located at the top of the trap, no dirt can collect on the orifice. Small particles of dirt are held in suspension until discharged by the full differential purging action when the bucket sinks, pulling the valve off the seat.
The discharge orifice is surrounded by a water seal, which prevents live steam loss. Automatic air venting is provided by a small vent hole in the bucket. This provides continuous automatic air and CO2 venting at steam temperature.
Inverted bucket traps drain continuously, although discharging intermittently, allowing no condensate backup. They are also resistant to water hammer.