Model 243 Natural Gas Pressure Regulator

The Model 243 natural gas pressure regulator is a large-capacity commercial and industrial service regulator designed for reliable pressure control across a wide range of distribution, metering, and appliance applications. Its rugged construction, interchangeable components, and broad configuration options make it a versatile solution for both commercial facilities and gas distribution systems.

Commonly used for pressure factor measurement, pressure-compensated metering, and fixed-factor billing, the Model 243 is well suited for factories, district regulator stations, commercial laundries, and institutional buildings. Its design also supports gas-fueled equipment such as boilers, burners, furnaces, ovens, heaters, kilns, and engines, delivering dependable performance in demanding environments.

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Model 243 Features

• Large-Capacity Commercial & Industrial Design: Supports high flow rates while maintaining stable outlet pressure for demanding service applications.

• Interchangeable Body & Diaphragm Assemblies: Union connection allows fully interchangeable bodies and diaphragm cases, improving field versatility and simplifying maintenance.

• Wide Gas Compatibility: Designed for natural gas service and compatible with propane vapor (LPG), air, nitrogen, dry CO₂, and other non-corrosive gases.

• Multiple Safety & Control Options: Available with internal relief valve (IRV) and low-pressure cut-off (LPCO) configurations for added system protection.

• High-Pressure Variants Available: Supports higher inlet pressures depending on model, pipe size, and orifice selection.

• Pilot-Operated Option: Pilot-operated variants are available for applications requiring enhanced pressure accuracy and stability.

Benefits

• Flexible Application Coverage: Suitable for commercial buildings, industrial facilities, and distribution system installations.

• Supports Accurate Metering & Billing: Ideal for pressure factor measurement, pressure-compensated metering, and fixed-factor billing applications.

• Simplified Installation & Service: Union-style construction allows easy installation, adjustment, inspection, and servicing in any piping orientation.

• Enhanced System Safety: Optional internal relief valve and low-pressure cut-off protect downstream equipment and piping.

Proven, Field-Tested Performance: Widely deployed in commercial and industrial gas systems with a long service history.

Capability

The Model 243 regulator family is engineered to support a broad range of commercial, industrial, and distribution system requirements.

• Application Types: Commercial buildings, industrial facilities, district regulator stations, pressure-compensated metering, gas-fueled equipment

• Gas Compatibility: Natural gas, propane vapor (LPG), air, nitrogen, dry CO₂, and other non-corrosive gases

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

• Pipe Sizes:

  • 1¼", 1½", and 2" NPT

  •  Flanged options available on select models

• Control Options: Internal control (standard)

• Pilot-operated configurations available for higher accuracy requirements

The Model 243 is compatible with the QR-S Mechanical Damping Device, which enhances regulator response in high-efficiency burner and boiler applications.

Specifications