Emerson Tartarini Pressure Regulator FL Series FL-BP FL-FR Stainless Steel Pressure Reducing Back Pressure Control

The Tartarini FL-FR is a pilot-operated pressure reducing regulator from the FL family with fail-open (fail-to-regulate open) or fail-close options. It reduces high inlet gas pressure to a stable lower outlet pressure. The FR designation typically indicates a specific pilot or configuration for fast response or fail-safe behavior in gas distribution and industrial service.

• Pilot-operated with high control accuracy
• Balanced plug for minimal setpoint shift
• Fast response and low droop
• Fail-open or fail-close configuration available
• Soft-seat tight shut-off
• Easy pilot replacement and adjustment
• Ductile iron or steel body options

• Nominal Sizes: DN 25 to DN 150 (1" to 6")
• Inlet Pressure: Up to 50 bar (higher on request)
• Outlet Pressure Range: 10 mbar to 10 bar (pilot spring dependent)
• Accuracy Class: AC 5 / AC 10
• Lock-up Pressure Class: SG 10 / SG 20
• Body Material: Ductile iron GGG40 or steel
• Connections: Flanged PN 16 / PN 25 / ANSI 150 / ANSI 300
• Operating Temperature: -20 °C to +60 °C

• Natural gas pressure reduction stations
• Industrial gas supply lines
• Commercial metering regulators
• Fail-safe pressure control systems
• Gas train and burner supply

Q: What does FR stand for? A: Usually indicates fail-open or specific fast-response pilot configuration.

Q: High flow capacity? A: Yes – large Cv/Kv values in FL series.

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