Armstrong 411 3/4 in NPT Inverted Bucket Steam Trap, 5/64 in orifice

Armstrong's Models 411G and 421 are forged chrome-moly steel inverted bucket steam traps for vertical installation with screwed, socket weld or flanged connections. The 411G offers smaller capacities at higher pressures; the 421 adds in-line repairability.

Part D502174 is the Armstrong 411 in 3/4 in NPT with a 5/64 in orifice.

Manufacturer documentation: data sheet, installation and maintenance manual.