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Tartarini™ PRX Series Pilots
PRX Series pilots are mainly used in natural gas, air, or other non-corrosive gas applications.
They have a double diaphragm which provides increased accuracy and sensitivity, an integral damper adjustment to allow adjustable opening and closing speeds, and a restrictor adjustment to allow adjustments to make for inlet pressure variability and loading pressure oscillations. Type SA/2 stabilizer filter must be used with PRX Series pilots
Tartarini™ PRX Series Pilots


Available Configurations
Types PRX/120 and PRX-AP/120: Pilots for Regulator or Monitor Control
Types PRX/125 and PRX-AP/125: Pilots for Operating Monitor Control
Types PRX/181 and PRX/182: Pilots for Type OS/80X-PN Slam-Shut Device
Types PRX/131 and PRX-AP/131: Pilot
End Connection Styles
1/4-inch NPT female threaded
Pressure Ratings
Generic Spec 3 Value
Temperature Capabilities
Standard Version Working: -10° to 60°C / 14° to 140°F
Low Temperature Version Working: -20° to 60°C / -4° to 140°F
Hydrogen Configurations
The PRX was validated for hydrogen service through extensive high-pressurehydrogen testing to analyze shutoff performance and material compatibility. For additional details regarding the evaluation and testing, please refer to Blending Hydrogen with Natural Gas: Technical Factors to Consider


  • High Sensitivity
  • Accurate Control
  • Tunable Performance