Roots Regulators

In today’s resource-hungry world — where infrastructure modernization, new CO2-neutral energy generation, and clean water for everyone are essential — resource management is more critical than ever before.  Roots is dedicated to developing solutions that address these challenges through more efficient measurement, management, and analysis of energy and water resources. Utilities trust Roots’gas regulator technology and people to help build a sustainable future with the latest innovations, a commitment to quality, and a shared passion for responsible resource management.

Roots B42 Natural Gas Regulators


This popular gas regulator reduces the pressure reduction of gas for typical domestic and light commercial applications.

Features and Benefits

It is a spring-loaded self-operated regulator with an internal relief option. The B42 regulator features a molded diaphragm, 6:1 lever ratio, and a one-inch vent. The benefit is a lighter more compact unit that provides the power, capacity, and relief performance of larger natural gas regulators.

Other Features

  • Interchangeable aluminum orifice
  • 6 sq. in. of diaphragm area
  • Molded deep convolution diaphragm with o-ring seal
  • Plated steel 6:1 lever
  • One-piece molded Buna-N valve seat
  • Delrin® vent valve with Buna-N seat
  • A spring-loaded internal relief valve assembly
  • 1″ and 3/4″ threaded vent with stainless steel screen
  • Fiberglass reinforced polyethylene seal cap with integral relief valve stop
  • Field interchangeable adjustment spring

Compact Gas Regulation Sizes

While the size of Roots’ gas pressure regulator is more compact than traditional regulators, it was also designed to meet customer expectations for safety and long field life. The B42 natural gas regulator is designed to consolidate product usage for both residential and light commercial applications.

Reduce Your Total Costs, Increase Your Satisfaction

Roots’ natural gas pressure regulator is uniquely constructed to give utilities the edge they need in an increasingly complex and competitive marketplace. The model B42 gas regulator excels with benefits of size, safety, performance, and cost. The B42 regulator also offers three connection versions providing the greatest flexibility for your regulation needs. In addition, due to inventory and manufacturing enhancements, this product can be delivered with unparalleled speed and scheduling dependability.

Roots’ B42 gas regulator may be used to control gases other than natural gas.

Roots B34 Natural Gas Regulator


Appropriate for many commercial and industrial uses such as gas engines, burners, furnaces, and boilers. The rapid response of the B34 regulator is particularly well-suited for mid-range applications where quick on/offloads cause shock problems.


  • Interchangeable brass orifice
  • 78 in 2 of diaphragm area
  • A spring-loaded internal relief valve assembly
  • Field interchangeable adjustment spring
  • Controlled size breather orifice eliminates pulsation and provides normal action at low flows
  • Wide range of valve body sizes including NPT and flange connections


  • Economical
  • Protects equipment from shock damage
  • Large 12″ diaphragm for better outlet pressure control
  • Unmatched overpressure protection with internal monitor (IM) plus internal relief option
Manufacturer Website

Roots Regulators Products We Carry:

Gas Measurement & Controls

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