Barber Colman N800-9426 Diaphragm

The Barber Colman N800-9426 is a replacement diaphragm specifically designed for the F/M556 pneumatic actuator. Engineered to meet OEM specifications, this diaphragm restores the actuator’s original performance by maintaining proper pressure responsiveness and sealing. Backed by Schneider Electric, this Barber Colman component ensures reliable operation in HVAC and industrial pneumatic systems.

Technical Specifications

  • Model: N800-9426
  • Type: Replacement Diaphragm
  • Compatible Actuator: F/M556 series
  • Material: Flexible elastomer, OEM-grade
  • Function: Maintains actuator responsiveness and seal integrity
  • Installation: Internal diaphragm component
  • Manufacturer: Barber Colman (Schneider Electric)

Key Features

  • OEM replacement for F/M556 actuator
  • Maintains full stroke range and pneumatic responsiveness
  • Built from durable, pressure-resistant materials
  • Designed for fast and easy field replacement
  • Helps extend actuator life and system reliability
  • Ideal for routine maintenance or performance restoration

Compatible Components & Accessories

  • F/M556 series actuators
  • Actuator spring and linkage kits
  • Control systems using Barber Colman pneumatic actuators
  • Schneider Electric panels and valve assemblies

Industry Applications

  • HVAC and pneumatic damper control
  • Building automation systems
  • Institutional and commercial energy management
  • Industrial fluid and air systems
  • Air handler and valve actuation

Installation & Maintenance Notes

  • Depressurize actuator system before beginning service
  • Remove old diaphragm and clean mating surfaces
  • Install N800-9426 carefully to avoid folds or tears
  • Reassemble actuator and test function under operating pressure
  • Replace during routine maintenance intervals for best results


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