Armstrong's 400 Series inverted bucket steam traps are forged chrome-moly steel traps for vertical installation with screwed, socket weld or flanged connections. The free-floating leverage mechanism has no fixed pivots, the orifice at the top of the trap stays clear of dirt, and each discharge purges suspended particles.Part D550256 is the Armstrong 413 in 3/4 in SW, rated 125 psig maximum operating pressure.Model 413 specifications Maximum Capacity: 4,400 lb/hr (1,996 kg/hr) Maximum Allowable Pressure: 1,050 psig (72 bar) Maximum Allowable Temperature: 850°F (454°C) Body Material: ASTM A182 F22 Forged Steel Maximum Operating Pressure: 1,000 psig (69 bar) Connection Type: Screwed Socketweld Flanged Connection Size: 1/2″ (15 mm) 3/4″ (20 mm) 1″ (25 mm) Flow Direction: Vertical Manufacturer documentation: installation and maintenance manual.
