ROOTS B34 Series commercial gas regulator, formerly Itron B34, for industrial pressure control

B34 Series Commercial and Industrial Gas Regulator

The B34 Series gas regulator represents ROOTS Regulators‘ commitment to continuing Itron’s legacy of excellence in pressure control technology. Following Dresser Utility Solutions’ acquisition of Itron’s gas regulator business, the B34 maintains its reputation for reliability while advancing under the ROOTS brand name in North America.

This commercial and industrial regulator excels in applications requiring quick response to variable loads. Its robust design and precision engineering make it particularly effective for gas engines, burners, furnaces, and boilers where consistent pressure control is critical for operational safety and efficiency.

Request a Quote

Features & Benefits

B-34 Features and Benefits:

  • A large 12-inch diaphragm provides superior pressure control
  • Interchangeable brass orifice for application flexibility
  • Spring-loaded internal relief valve assembly for built-in safety
  • Field-interchangeable adjustment spring for easy maintenance
  • A controlled breather orifice eliminates pulsation at low flows
  • Available with internal monitor options for enhanced safety
  • Wide range of valve body sizes, including NPT and flange connections
  • ANSI Z21.80/CSA 6.22 certified for quality assurance
Specifications

Specifications for the B34 Gas Regulator

Operating Parameters

  • Maximum operating inlet pressure:
    • Up to 175 PSIG for w.c. delivery
    • Up to 150 PSIG for PSIG delivery
  • Outlet pressure ranges:
    • 3.0" w.c. to 28.0" w.c. (using colored springs)
    • 1.0 PSIG to 7.3 PSIG (using nested springs)
  • Operating temperature: -20°F to 150°F (-29°C to 66°C)
  • Maximum emergency inlet pressure: 300 PSIG
  • Maximum emergency outlet pressure: 60 PSIG

Available Connections

  • NPT valve bodies:
    • Inlet sizes: 1-1/4", 1-1/2", 2" NPT
    • Outlet sizes: 1-1/4", 1-1/2", 2" NPT
  • Flanged valve bodies:
    • 2" x 2" ASA 125 flat-face flange
    • 3" x 3" ASA 125 flat-face flange
  • Vent connection: 1" NPT

Construction Materials

  • Valve body: High tensile strength cast iron
  • Orifice: Brass
  • Diaphragm: Buna-N and nylon
  • Valve seat: Buna-N or silicone (for temperatures below -20°F)
  • Valve stem: Plated steel
  • Diaphragm case: Die-cast aluminum

Downloads

Options

Options:

  • Multiple spring ranges for precise setpoint control
  • Various orifice sizes for flow optimization
  • NPT or flanged connections
  • Vent size options
  • Special materials for specific applications
  • Position mounting flexibility
  • Optional pressure tap connections
Applications

B34 Applications:

  • Commercial heating systems
  • Industrial process control
  • Power generation equipment
  • Gas engines and turbines
  • Industrial furnaces and ovens
  • District pressure regulation
  • Boiler fuel gas control