Depend on These Workhorses for High Performance and Fast Response

Our Model 441-57S and Model 461-57S medium pressure regulators are spring-operated regulators that incorporate a “roll-out” diaphragm, similar to the performance found in pilot-operated regulators.

The action of the roll-out diaphragm reduces “droop” (the fall off in outlet pressure as a spring regulator opens to increase flow). This makes the regulators’ exceptional performance possible. By offering near-pilot-operated regulator performance without a pilot, the 57S-series regulators offer simplicity, dependability and exceptionally fast response.

Both models are perfect for most intermediate and large-capacity applications:

• Gas distribution systems
• District regulator sets
• City gate stations
• Town border stations
• Monitoring
• A wide variety of industrial applications.

These workhorses of the industry have been recognized for their dependable service for nearly 70 years.

Benefits:

• Monitors set-point pressure
• Responds quickly to take control in case of emergency

Features:

• Simple design
• Standard face-to-face dimensions
• Standardized bodies and fully interchangeable  inner valve assemblies for easier maintenance
• Simplified valve adjustment
• Bushing guided inner valve
• Molded polyurethane soft seats
• Self-aligning spring adjustment

Specifications

Model 441-57S:

• Pipe sizes: 2”, 3” 4” 6”

Model 461-57S:

• Pipe size: 2”

Downloads:

461-57S Data Sheet

461-57S Installation Manual