Model 4100A Low Pressure Precision Pressure Regulator

Part Number: M4100A

Model 4100A Low Pressure Precision Pressure Regulator

Rotork Fairchild Model 4100A is a no bleed low pressure precision pressure regulator designed for applications that require high performance and accurate process control at very low pressures down to 2 inches water column. The Fairchild Model 4100A pneumatic low pressure regulator features control sensitivity of less than 0.05" water column, minimal consumption and high flow capacity to deliver consistent and reliable precision accuracy to maintain your desired set point regardless of supply pressure changes or conditions. The Fairchild Model 4100A high precision pressure regulator will handle a 150 psi, 10 BAR maximum supply pressure and offers four (4) output pressure ranges from 0-0.7 psi, 0-0.048 BAR, 0-4.8 kPa up to 0-5 psi, 0-0.35 BAR, 0-35 kPa. The Model 4100A has a flow capacity of 30 SCFM, 51m3/hr.


  • Sensitivity of 0.05" WC
  • Large relief valve
  • Soft valve seat
  • Aspirator tube


  • Precision control in very low pressure applications
  • Provides high exhaust flows for responsive operation
  • Minimizes air consumption
  • Compensates for any pressure build up under flow conditions


M4100A - Specifications (692.04 KB)
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