BelGAS Type F289 Back-Pressure Regulator

WWW.DISTRIBUTORALATINDUSTRI.COM | BelGAS Type F289 Back-Pressure Regulator | The BelGAS Type F289 Pilot-Operated Back-Pressure Regulator is a pilot-operated back-pressure regulator designed to control upstream pressure and relieve excess pressure in gas systems. Part of the BelGAS 289 Series, it functions as a high-flow throttling relief valve with an adjustable pressure set point

BelGAS Type F289 Back-Pressure Regulator

Unlike conventional pressure-reducing regulators, which control downstream outlet pressure, the F289 back-pressure regulator controls upstream pressure. When system pressure reaches the specified set point, the pilot regulates the main valve mechanism, allowing it to open progressively and release gas. This helps maintain system pressure within the required operating limits.

The F289 is designed for applications requiring high flow capacity and precise back-pressure control. According to BelGAS product information, it can serve as an alternative to conventional relief valves in suitable applications. When the main valve reaches full opening, pressure buildup above the set point can remain relatively low, depending on the operating conditions and system configuration.

Key Functions

  • Controls back pressure in gas systems.
  • Relieves excess pressure to help protect equipment and piping against overpressure conditions.
  • Maintains upstream pressure near the specified set point.
  • Provides gradual gas release through a throttling mechanism.
  • Handles high-flow gas relief requirements.
  • Supports fuel gas systems and gas gathering networks.

Features and Advantages

  • Pilot-Operated Design: Uses a pilot mechanism to control the operation of the main valve.
  • High Flow Capacity: Designed for applications requiring substantial gas flow during pressure relief.
  • Adjustable Set Point: Allows the pressure setting to be selected according to the spring range and regulator configuration.
  • Throttling-Type Relief: Enables the valve to open progressively in response to pressure conditions rather than relying solely on a simple on-off mechanism.
  • Tight Shutoff: Helps minimize leakage through the valve under normal operating conditions, subject to the product specifications.
  • Compact Construction: Provides a compact design for integration into suitable piping systems.
  • Serviceable Design: Rebuild kits are available to support maintenance and servicing requirements.

Industrial Applications

The BelGAS Type F289 is commonly considered for the following applications:

  • Fuel Gas Relief Systems: Relieves excess pressure in fuel gas supply networks.
  • Gas Gathering Systems: Helps control pressure in gas collection networks.
  • Gas Distribution Systems: Supports pressure protection in suitable gas distribution applications.
  • Industrial Gas Systems: Used in industrial gas installations requiring back-pressure regulation and high-flow relief.
  • Pressure Protection Systems: Helps prevent system pressure from exceeding specified operating limits.

The regulator must be selected according to the gas composition, operating pressure, required flow capacity, installation conditions, and applicable safety requirements. Its suitability for a particular pressure-protection duty should be confirmed against the manufacturer’s specifications and system design requirements.

Materials and Construction

The construction of the BelGAS Type F289 varies according to port size and configuration.

  • 1-inch Size: Features an aluminum body and bonnet, with a diaphragm available in nitrile or fluoroelastomer, depending on the configuration.
  • 2-inch Size: Features a cast-iron body and an aluminum bonnet. Diaphragm materials and internal components are selected according to the applicable configuration and service requirements.
  • Internal Components: Depending on the model, components may include a pitot tube, seat, piston, spring, gaskets, and O-rings.

Material selection should be verified against the specific model documentation to ensure compatibility with the gas, operating pressure, temperature, and installation environment.

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