Armstrong D508258 Repair Cap for 421 Inverted Bucket Steam Trap

Armstrong part D508258: repair cap for the Armstrong 421 inverted bucket steam trap (Models 411G & 421).

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.

Manufacturer documentation for the Models 411G & 421: data sheet, installation and maintenance manual.