Itron

ROOTS B38 Series Commercial & Industrial Regulator

The ROOTS B38 Series regulator (previously known as Itron B38) is engineered for demanding commercial and industrial gas applications where consistent pressure delivery is critical. This high-performance regulator maintains stable outlet pressure despite inlet pressure fluctuations, providing exceptional reliability in utility services, gas engines, burner trains, furnaces, and boilers.

What sets the B38 apart is its excellent response to sudden on/off loads. When your equipment cycles between zero flow and maximum flow, the B38’s rapid response prevents damaging pressure spikes and system shock. This regulator easily handles high-capacity requirements, making it an ideal choice for applications requiring precise pressure control.

Following Dresser Utility Solutions’ acquisition of Itron’s global gas regulator business, these trusted pressure control solutions continue their legacy of excellence under the ROOTS brand name in North America. The B38 maintains all the performance features and reliability that customers valued in the Itron version.

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Features & Benefits

B38 Superior Protection and Control

  • Exceptional Overpressure Protection: Available with internal monitor plus internal relief valve configuration (B38IMR) that provides two layers of safety protection
  • Rapid Response Technology: Prevents equipment damage from pressure shock during sudden flow changes
  • Controlled Breather Orifice: Eliminates pulsation and ensures normal operation at low flows
  • High Capacity Performance: Handles demanding flow requirements with orifices up to 1-3/8"
  • Wide Range of Configurations: Multiple models available for standard operation (B38N, B38R), monitor applications (B38M), and enhanced safety (B38IMR, B38IMN, B38IMRV)
  • DOT Safety Standards Compliance: The Internal monitor design meets Department of Transportation safety requirements
  • Robust Construction: Durable components ensure long service life in demanding industrial environments

Design and Construction Features

  • Field-Interchangeable Components: Easily replace orifices and adjustment springs to adapt to changing requirements
  • Large Diaphragm Area: 78 square inches provides precise pressure control
  • Spring Internal Relief Valve: Integrated safety feature on relief models
  • Flexible Mounting Options: Multiple assembly positions accommodate various installation requirements
  • Comprehensive Size Options: Available in NPT and flanged connections to fit various system requirements
  • 2-1/2" Relief Vent: Superior internal relief performance eliminates the need for external relief valves in many applications
Specifications

Technical Specifications

  • Available Connections: 1-1/2" NPT, 2" NPT, 2" Flanged, 3" Flanged
  • Maximum Operating Pressure: Varies by orifice size (see capacity tables)
  • Outlet Pressure Ranges: Available from 2.3" w.c. to 7.8 PSIG, depending on spring selection
  • Operating Temperature Range: -20°F to 150°F
  • Available Orifice Sizes: 1/4", 3/8", 1/2", 5/8", 3/4", 1", 1-1/4", 1-3/8"
  • Flow Capacities: Up to 20,000 SCFH, depending on configuration
  • Diaphragm: Buna-N with nylon reinforcing fabric
  • Valve Body Material: High tensile strength cast iron (ASTM A-126, Class A)
  • Orifice Material: Brass (ASTM B16, Alloy 360)

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Options

B38 Model Options

  • B38R: Spring-loaded, self-operating regulator with internal relief valve for overpressure protection
  • B38N: Non-relief version for applications where overpressure protection is not required
  • B38M: Monitor version with O-ring seal and control line for downstream pressure monitoring
  • B38IMR: Internal monitor with backup relief valve for enhanced overpressure protection
  • B38IMN: Internal monitor without relief valve
  • B38IMRV: Internal monitor with relief valve and venting capability to signal regulator issues
Applications

Ideal for Multiple Commercial and Industrial Uses

  • Utility Service Lines: Maintains consistent pressure in municipal and utility gas distribution systems
  • Gas Engine Applications: Provides stable pressure for generator sets and gas-powered engines
  • Burner Train Systems: Ensures reliable fuel delivery for industrial burners
  • Commercial Boilers and Furnaces: Maintains precise pressure for heating equipment
  • Industrial Process Systems: Delivers consistent gas pressure for manufacturing processes
  • Commercial Buildings: Regulates gas supply pressure for multi-unit facilities
  • Farm Taps: Controls pressure reduction from transmission to distribution pipelines