Bellofram Type 51 High-Performance Precision Air Regulator

These regulators are available standard (Type 51R) or as filter regulators (Type 51FR and Type 51FRCT) and are even available with an automatic drain, for automated flushing out of contaminants (Type 51 AFR). These versatile regulators provide excellent regulation for a wide range of applications, including pneumatic instruments, controllers, chucks, and actuators. They can be through-panel mounted with the supplied mounting nut, bracket-mounted with the optional bracket or, due to their light weight, mounted by their ports. The Corrosive Tec is supplied with a tapped bonnet vent, to allow for the capture of exhaust air.

Data Sheet

Categories: ,



  • Excellent regulation, stability and repeatability
  • Corrosion-resistant construction (no brass components, Type 51FR and Type 51AFR)
  • Low droop
  • Small package size
  • Panel, bracket or pipe mounting
  • Meets ATEX II 2 G Dc T 6 (Non-electrical certification)
  • Fluorocarbon pintle seat (Type 51FR, Type 51AFR and Type 51FRCT)


  • Pneumatic Instruments
  • Controllers
  • Chucks
  • Actuators
  • Can be Through-Panel Mounted with the Supplied Mounting Nut
  • Bracket-Mounted with the optional bracket
  • Mounted by their ports