
B42R Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $45.00 | Condition is New – Open box, Roots B42R Pressure Reducing Nat Gas Regulator Valve 3/4" In/Out 3/16 ORI 5-71WC, shipping cost = $10.15 | 100.0% |
![]() | $65.00 | Condition is New – Open box, 1" NPT Roots Regulators B42R-IRV Model B-42 Gas Regulator CI NEW P12, shipping cost = $28.31 | 100.0% |
![]() | $99.99 | Top Pick! Condition is New – Open box, ROOTS B42R Gas Pressure Regulator 3/4" x 3/4", FREE SHIPPING | ![]() |
![]() | $150.00 | Condition is New – Open box, Roots Gas Pressure Regulator B42R08/24 Gray, shipping cost = $13.59 | 100.0% |
![]() | $164.99 | Top Pick! Condition is New – Open box, Roots Regulators B42R 1/2 x 9/16 Orifice 6-16" WC Gas Regulator, Gray, FREE SHIPPING | 99.7% |
![]() | $160.00 | Condition is New – Open box, Roots Regulators B42R Natural Gas Pressure Reducing Regulator, shipping cost = $17.65 | 100.0% |
![]() | $200.00 | Top Pick! Condition is New – Open box, Roots Gas Valve B42R7T2S Gas Pressure Regulator Gray Metal , shipping cost = $13.59 | 100.0% |
![]() | $240.00 | Condition is New – Open box, Roots Regulators B42R Natural Gas Pressure Reducing Regulator, shipping cost = $17.65 | 100.0% |
![]() | $275.00 | Condition is New – Open box, Roots Regulators B42R Natural Gas Pressure Reducing Regulator, shipping cost = $17.65 | 100.0% |
![]() | $400.00 | Condition is New – Open box, Roots Regulators B42R Natural Gas Pressure Reducing Regulator, shipping cost = $17.65 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $39.99 | Condition is New, Roots B42R Gas Pressure Regulator Valve ORI 1/8x3/16 1.25-2.25PSIG Purple Spring, shipping cost = $8.56 | 100.0% |
![]() | $54.07 | Top Pick! Condition is New, Roots Regulators B42R Gas Pressure Regulator 1/2 x 9/16, FREE SHIPPING | 100.0% |
![]() | $82.00 | Condition is New, ROOTS B42R Gas Regulator 3/8 4 9 IWC Internal Relief NEW, shipping cost = $9.35 | 100.0% |
![]() | $122.00 | Condition is New, ITRON / ROOTS Portable Gas Torpedo Heater Gas Pressure Regulator, 1 out, 60psi, FREE SHIPPING | 100.0% |
![]() | $145.99 | Condition is New, Roots Regulators B42R Pressure Reducing Natural Gas Regulator 3/4" In/Out 6-8, FREE SHIPPING | ![]() |
![]() | $500.00 | Condition is New, Roots Regulators B42R Natural Gas Pressure Reducing Regulator, shipping cost = $14.75 | 0.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $135.00 | Condition is Open box, GF+ Meter Set Frame with Gas Pressure Regulator ROOTS B42R, ORI1/8, 6-8 IWC, shipping cost = $49.31 | 100.0% |

The Roots BF42R Natural Gas Regulator is a high-performance, industrial-grade component designed for regulating the pressure of natural gas in various applications. This regulator, specifically modeled as a 3/4 NPT (National Pipe Thread) 1/2 x 9/16 IWC R3, is engineered to deliver consistent and reliable pressure reduction.
The BF42R regulator is constructed from durable materials, ensuring long-lasting functionality under heavy usage. The diaphragm inside the regulator is made of a robust elastomer material, capable of handling high pressure differentials. The regulator's body is forged from brass, providing excellent resistance to corrosion and wear.
This regulator features a 6-16 IWC (Inside Screw and Washer) connection, allowing it to be easily installed and maintained. The 1/2 x 9/16 thread size makes it compatible with a wide range of gas line systems. The pressure relief valve is factory set at 150 psig (pounds per square inch gauge), ensuring safe operation within the specified range.
The BF42R regulator is designed to meet or exceed industry standards for natural gas regulation, including ANSI/ASME B16.34 and API 648. It is suitable for use in various applications, such as industrial processes, commercial buildings, and residential homes. With its rugged construction and precise pressure regulation capabilities, the Roots BF42R Natural Gas Regulator is an essential component for maintaining the safety and efficiency of natural gas systems.
The Roots BFG2R Natural Gas Regulator 3/4 NPT 1/2x9/16 6-16 IWC R3 is a pressure regulator designed for use in natural gas applications. Here are some pros and cons of buying this regulator to help you make an informed decision:
Pros:1. High-performance: The Roots BFG2R regulator is known for its superior flow characteristics and accuracy, making it an excellent choice for applications that require precise pressure control.
2. Durable construction: This regulator is built with high-quality materials, including brass housing and stainless steel components, ensuring long-lasting performance and resistance to corrosion.
3. Versatile: The 3/4 NPT connection size and various outlet sizes make this regulator suitable for a wide range of applications, from residential to industrial use.
4. Easy installation: The regulator comes with a user-friendly design and clear markings, making it easy to install and set up.
Cons:1. Cost: The Roots BFG2R regulator is more expensive than some other pressure regulators on the market, which may be a consideration for some buyers.
2. Size: This regulator is larger than some other options, requiring more space for installation.
3. Complexity: While the regulator is easy to install, its internal mechanisms are more complex than some other regulators, which may require occasional maintenance or adjustments.
In conclusion, the Roots BFG2R Natural Gas Regulator 3/4 NPT 1/2x9/16 6-16 IWC R3 is a high-performance and durable regulator suitable for a wide range of natural gas applications. Its superior flow characteristics, versatile connection sizes, and user-friendly design make it an excellent choice for those who require precise pressure control. However, its higher cost and larger size may be a consideration for some buyers. Ultimately, if you require a reliable and accurate natural gas regulator for your application, the Roots BFG2R regulator is an excellent investment.
Details:
New Roots natural gas regulator, part number: B42R, connections: 3/4 npt inlet and outlet, orifice: 1/2 x 9/16, pressure setting: 6-16 inches water column iwc see photos for details about this part. This includes apartments, townhouses, shared industrial buildings, strip malls, etc. See photos and read for information on the part being sold. No other parts included in this sale.
On part or box. Sale is for one 1 new natural gas furnace regulator valve.
specifications maxohvac:
- brand: Roots
- mpn: B42r
- part type: Regulator
returns maxohvac:
- policy: no returns
seller maxohvac:
- rating: 99.5%
- city: greenville, south carolina
- # reviews: 5125
offer maxohvac:
- availability: in stock
- prices: $39.99–$500.00
- item condition:
- New – Open box
- New
- Open box
- options: ship-to-home
- in stock #: 5
- best offers: true
- started: april 3, 2025
- sold #: 17
shipping maxohvac:
- class: economy, standard
- carrier: ups, usps
- type: calculated
- service: ups ground saver, usps ground advantage
- transit: 5-11 days
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
payments maxohvac:
- wallet: paypal
- other
- credit card: discover

















