1A1 Filter Housing

1A1 Filter Housing

The 1A1 filter housing has been the workhorse of the pump seal flush line for decades and can be found in nearly every boiler room. The all-metal, two-piece, die-cast aluminum construction makes the 1A1 reliable and cost effective. Each 1A1 filter housing takes a standard GFP50U30 pump seal filter cartridge. Rated for 125 psi @ 200°F, the 1A1 filter housing is suitable for most pump seal applications. For chemically challenging applications, the all-stainless GFS Series filter housings are available.


  • Economical protection of expensive pump seals
  • Durable die-cast aluminum
  • In-line 3/8” NPT connections
  • Holds a standard GFP50U30 pump seal filter
  • Available unpainted and painted (blue epoxy)


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