Model 046 Natural Gas Pressure Regulator

The Model 046 natural gas pressure regulator is a rugged, field-proven solution designed for pounds-to-pounds pressure regulation in high-pressure gas applications. Built with a simple, durable design and flexible configuration options, the Model 046 delivers dependable performance for utility, industrial, and field installations where operational safety and long-term reliability are critical.

Commonly used as a field regulator, the Model 046 is suitable for natural gas service as well as nitrogen, air, dry CO₂, and other non-corrosive industrial gases. Its flexible mounting positions, wide pressure ranges, and optional internal relief configurations make it a dependable choice for demanding gas regulation environments.

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Product Documents

Model 046 Features

  • High-Pressure Capability: Designed to handle inlet pressures up to 1,000 psi (model-dependent), supporting a wide range of high-pressure gas applications.

  • Flexible Installation Options: Can be installed in any mounting orientation, with a diaphragm case that can be rotated to accommodate piping layout and site constraints.

  • Multiple Configurations Available: Offered in standard models, internal relief valve (IRV) versions, blocked throat designs, and monitor regulator configurations for added system protection.

  • Durable Construction Materials: Features a ductile iron body with aluminum or cast-iron diaphragm cases and multiple valve trim material options to match application requirements.

  • Union Connection Design: Simplifies installation, inspection, and servicing without removing the regulator from the pipeline.

  • Wide Spring & Orifice Selection: Multiple spring ranges and orifice sizes allow precise pressure control across a broad operating envelope.

Benefits

  • Reliable Pressure Control: Provides stable, repeatable outlet pressure control in pounds-to-pounds regulation scenarios.

  • Enhanced Operational Safety: Optional internal relief valve configurations help protect downstream systems from over-pressurization.

  • Reduced Maintenance Downtime: Serviceable design allows inspection and maintenance without removing the regulator body from the piping system.

  • Application Flexibility: Suitable for indoor or outdoor installations and compatible with multiple non-corrosive gases beyond natural gas.

  • Long Service Life: Rugged materials and proven mechanical design support dependable performance in harsh field and industrial environments.

Capability

The Model 046 regulator family supports a wide range of operating conditions and configurations to meet diverse system requirements.

  • Inlet Pressure: Up to 1,000 psi (model, spring, orifice, and trim dependent)

  • Outlet Pressure Range: 3 to 200 psi (model dependent)

  • Pipe Sizes: ¾", 1", and 1¼" NPT

  • Installation: Indoor or outdoor (not suitable for buried service)

  • Gas Compatibility: Natural gas, nitrogen, air, dry CO₂, and other non-corrosive gases

Monitor regulator variants (046-M and 046-2M) are available for applications requiring remote pressure sensing or use in monitor regulator sets for added system protection.

Specifications

Available Models

  • 046: Standard regulator (no internal relief valve)

  • 046-2: Regulator with internal relief valve

  • 046-M: Monitor regulator with control line

  • 046-2M: Monitor regulator with internal relief valve

Construction

  • Body: Ductile iron

  • Diaphragm Case: Aluminum or cast iron

  • Valve Trim Materials: Poly-U-Tan, Buna-N, or Viton

  • Internal Components: Brass or stainless steel options

Pressure Ratings

  • Maximum Inlet Pressure:

    • Up to 1,000 psi (046, 046-2, 046-M)

    • Up to 925 psi (046-2M)

  • Outlet Pressure Ranges:

    • 3 to 200 psi (standard models)

    • 3 to 125 psi (IRV models)