Model 441-X57 & 461-X57 High-Pressure Gas Regulators

The Model 441-X57 and Model 461-X57 high-pressure gas regulators are large-capacity, spring-operated regulators engineered to deliver pilot-style performance without the complexity of a pilot system. Designed for demanding natural gas distribution and industrial applications, these regulators provide fast response, stable outlet pressure, and dependable operation across a wide range of high-pressure conditions.

Both models utilize a proven roll-out diaphragm design that significantly reduces droop—the loss of outlet pressure as flow increases—allowing the regulator to maintain consistent pressure even under rapidly changing load conditions. This combination of precision control, rugged construction, and simplified maintenance makes the 441-X57 and 461-X57 ideal for transmission, distribution, and high-capacity industrial gas systems.

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Model 441-X57 & 461-X57 Features

• Roll-Out Diaphragm Technology: Advanced diaphragm design minimizes droop and delivers near pilot-operated performance with a spring-operated regulator.

• High-Pressure, Large-Capacity Design: Engineered for high-pressure gas applications requiring stable pressure control at elevated flow rates.

• Fast Response Characteristics: Quickly reacts to downstream demand changes, improving system stability and operational safety.

• Monitor-Ready Configuration: Can be used as a monitor regulator without modification, assuming control rapidly if the operating regulator fails.

• Heavy-Duty Construction: Built with ductile iron or cast steel bodies and robust internal components for long service life in harsh environments.

• Simplified Adjustment & Maintenance: Spring-operated design with standardized internal components allows for easier field servicing and reduced maintenance time.

• Ball-Check Diaphragm Sentry: Provides added safety by maintaining regulator operation in the event of diaphragm failure.

Benefits

• Pilot-Type Performance Without a Pilot: Achieves excellent pressure stability and minimal droop while eliminating pilot maintenance and freeze-up concerns.
• Enhanced System Reliability: Rugged design and proven internal components support continuous operation in critical gas distribution systems.
• Improved Safety During Upset Conditions: Fast response and monitor capability help protect downstream piping and equipment during over-pressure events.
• Reduced Total Cost of Ownership: Simplified construction and serviceability reduce installation complexity, downtime, and long-term maintenance costs.
• Versatile Application Coverage: Suitable for a wide range of natural gas and non-corrosive gas applications across utility and industrial markets.

Capability

The Model 441-X57 and 461-X57 regulators are designed to support demanding operating conditions across utility and industrial gas systems.

Typical Applications

• High-pressure regulator stations

• Gas distribution systems

• Town border and transmission stations

• Monitor regulator sets

• Large-capacity industrial gas systems

Gas Compatibility

• Natural gas

• Propane (LPG)

• Nitrogen

• Air

• Dry CO₂ and other non-corrosive gases

Installation

• Indoor or outdoor service

• Not recommended for buried installations

Specifications