Filter Regulator Lubricator Assemblies (FRLs)

Marsh Bellofram FRL’s are pre-packaged, modular assemblies of popular configurations of air filters, regulators and lubricators offered as a single unit. Designed with economy and convenience in mind, Marsh Bellofram FRL’s are available in miniature and standard sizes. Regulators incorporate a balanced poppet and relieving type diaphragm, with a metal body, polycarbonate bonnet, a non-rising adjustment knob and panel, pipe or bracket mounting capabilities.

Filter regulators offer the features as the pressure regulators with the addition of 5, 25 or 50 microfilters, polycarbonate bowls, and the choice or manual, semi-automatic and automatic drains. Lubricators feature polycarbonate bowls and a field settable adjustment of the lubrication level. Units are available in 0-10, 3-30, 3-60 and 7-140 PSIG output pressure ranges with a maximum supply of 140 PSIG(280 PSIG w/metal bowl option). FRL’s are offered with a choice of 1/8, 1/4, 3/8, 1/2,3/4 and 1 NPT pipe sizes. The modular design facilitates easy maintenance and swap-out of the filter, regulator or lubricator.



  • Modular design for service and interchangeability
  • Miniature (MA13) and standard (MA14,15, and 17)
  • Small package size and lightweight construction
  • Compact package size and lightweight construction
  • Competitively priced


  • Pneumatic Systems
  • Air Preparation and filtration
  • Industrial tooling, machinery and equipment
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