ROOTS B42 residential gas pressure regulator

B42 Series Gas Pressure Regulator

The B42 Series gas pressure regulator combines proven reliability with modern design improvements. Previously known as the Itron B42, this regulator continues its legacy of excellence under the ROOTS brand name following Dresser Utility Solutions’ acquisition of Itron’s gas regulator business.

The B42 is engineered for precise pressure control in a compact package. This spring-loaded, self-operated regulator features a molded diaphragm design with a 6:1 lever ratio and a one-inch vent. The result is a lighter unit that matches the performance capabilities of larger regulators.

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Features & Benefits

ROOTS (Itron) B42 Features & Benefits

  • Molded deep convolution diaphragm with an o-ring seal provides reliable pressure control
  • 12.6 sq. in. diaphragm area enables consistent performance
  • A 6:1 plated steel lever ratio offers enhanced control capability
  • Interchangeable aluminum orifice for application flexibility
  • One-piece molded Buna-N valve seat ensures tight shutoff
  • 1" and 3/4" threaded vent with stainless steel screen
  • Field-interchangeable adjustment spring for easy maintenance
  • Fiberglass reinforced polyethylene seal cap with integral relief valve stop

 

Specifications

Itron Model B-42 Specifications

Operating Parameters

  • Maximum inlet pressure: Up to 125 PSIG
  • Outlet pressure ranges from 5" w.c. to 5 PSIG
  • Operating temperature: -20°F to 150°F (-29°C to 66°C)
  • Maximum emergency inlet pressure: 300 PSIG

Available Connections

  • Inlet sizes: 1/2", 3/4", 1", 1-1/4" NPT
  • Outlet sizes: 1/2", 3/4", 1", 1-1/4" NPT
  • Vent connection: 3/4" or 1" NPT

[Download Complete Specifications Sheet including Capacity Tables and Installation Guide]

[Download ROOTS Complete Regulator Line Card]

Options

ROOTS B42 Options

  • Multiple spring ranges available:
    • 5-7” w.c. (green spring)
    • 6-8” w.c. (brown spring)
    • 8-14” w.c. (blue spring)
    • 12-28” w.c. (silver spring)
    • 1-2 PSIG (yellow/black spring)
    • High-pressure springs available
  • Relief spring options:
    • 5” w.c. (orange)
    • 6” w.c. (red)
    • 7” w.c. (purple)
    • 9" w.c. (black)
  • Valve body configurations:
    • Straight through
    • 90° angle
    • Compact design
  • Optional pipe tap connections
  • Silicone valve seats for low-temperature applications
  • Available with tamper-resistant features
Applications

B42 Regulator Applications

  • Residential gas service
  • Light commercial installations
  • Multi-family housing
  • Small industrial applications
  • 2 PSI systems
  • Farm tap service