
R400S Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $29.24 | Condition is New – Open box, Maxitrol R400S 3/8" NPT Gas Appliance Regulator 5PSIG, shipping cost = $6.99 | 99.8% |
![]() | $38.00 | Condition is New – Open box, Maxitrol Inlet Pressure Valve, 1/2PSIG, Po 3"-6", 3/8", R400S, FREE SHIPPING | ![]() |
![]() | $38.00 | Condition is New – Open box, Maxitrol Inlet Pressure Valve, 5PSI Max, 3/8", R400S, FREE SHIPPING | ![]() |
![]() | $45.99 | Condition is New – Open box, MAXITROL R400S, VALVE, MAXIMUM INLET PRESSURE 5 PSIG, FREE SHIPPING | 99.9% |
![]() | $29.00 | Condition is New – Open box, Maxitrol Gas Appliance Regulator R400S 5PSIG , R400S-1/2, shipping cost = $19.45 | 100.0% |
![]() | $40.00 | Top Pick! Condition is New – Open box, Maxitrol R400S-2 Regulator, shipping cost = $9.06 | 100.0% |
![]() | $52.00 | Condition is New – Open box, Maxitrol R400S Gas Pressure Regulator , 3/8 npt, 5 psig, 2 pcs, new open box, shipping cost = $7.87 | 100.0% |
![]() | $48.00 | Condition is New – Open box, MAXITROL R400S 5PSI NSNP, shipping cost = $16.50 | 99.9% |
![]() | $64.00 | Condition is New – Open box, MAXITROL R400S-44-0035 1/2" NSMP, FREE SHIPPING | 99.9% |
![]() | $68.60 | Condition is New – Open box, Maxitrol R400S Gas Regulator / 5 PSIG Max / 17127-8 Gas Regulator, FREE SHIPPING | 99.2% |
![]() | $55.00 | Top Pick! Condition is New – Open box, Maxitrol,R400S,1/2 Inch Gas Pressure Regulator 5Psig, shipping cost = $19.96 | 100.0% |
![]() | $69.99 | Top Pick! Condition is New – Open box, Maxitrol R400S 1/2" Gas Pressure Regulator - NEW, shipping cost = $10.95 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $23.73 | Condition is New, Maxitrol R400B10-412 Co. R400B10412 violet spring 4-12" for R400, R400S regulato, FREE SHIPPING | 98.5% |
![]() | $23.73 | Condition is New, Maxitrol R400B10-13 Co. R400B1013 brown spring 1-3.5" for R400, R400S regulators, FREE SHIPPING | 98.5% |
![]() | $39.99 | Condition is New, Maxitrol R400S 1/2" Gas Pressure Regulator - NEW, FREE SHIPPING | 99.6% |
![]() | $68.72 | Condition is New, MAXITROL R400S-3/8 R400S-3/8 3/8" GAS PRESSURE REGULATOR-300,000, FREE SHIPPING | 97.8% |
![]() | $72.30 | Condition is New, MAXITROL R400S-3/8 R400S-3/8 3/8" GAS PRESSURE REGULATOR-300,000, FREE SHIPPING | 98.5% |
![]() | $73.47 | Condition is New, MAXITROL R400S-1/2 R400S-1/2 1/2" GAS PRESSURE REGULATOR-300,000, FREE SHIPPING | 98.5% |
![]() | $74.99 | Condition is New, MAXITROL R400S-1/2 R400S-GAS PRESSURE REGULATOR (LNN14T), FREE SHIPPING | 99.8% |
![]() | $79.88 | Condition is New, MAXITROL R400S.5 Gas Regulator 5" Water Column Commercial & Appliance, FREE SHIPPING | ![]() |
![]() | $80.46 | Condition is New, Maxitrol R400S-3/8 Gas Pressure Regulator 3/8 inch - 300000 BTU, FREE SHIPPING | ![]() |
![]() | $80.95 | Condition is New, Maxitrol R400S-1/2-CSA 1/2 inch Regulator in 3-6 inch Std CSA Spring, FREE SHIPPING | 98.5% |
![]() | $81.30 | Condition is New, Maxitrol R400S-1/2-CSA 1/2"Reg 1/2#In 3-6"StdCSASprng, FREE SHIPPING | 99.7% |
![]() | $81.59 | Condition is New, Maxitrol R400S-1/2-CSA Gas Regulator Balanced Valve 1/2 inch NPT, FREE SHIPPING | ![]() |
![]() | $83.11 | Condition is New, Maxitrol R400S-33-0046 3/8" Non Lock-Up Gas Regulator 5# Max Pressure, FREE SHIPPING | ![]() |
![]() | $77.61 | Top Pick! Condition is New, MAXITROL R400S-1/2-CSA / R400S12CSA (BRAND NEW), shipping cost = $12.90 | 99.7% |
![]() | $92.00 | Condition is New, Maxitrol R400S-1/2 1/2"Reg 5#In 3-8"SpringOut, FREE SHIPPING | 100.0% |
![]() | $94.00 | Condition is New, Maxitrol R400S-1/2-CSA 1/2"Reg 1/2#In 3-6"StdCSASprng, FREE SHIPPING | 100.0% |
![]() | $99.99 | Top Pick! Condition is New, Maxitrol Gas Pressure Regulator R400S 5 PSIG 3"- 6" *New Old Stock*, FREE SHIPPING | 99.8% |
![]() | $90.00 | Top Pick! Condition is New, MAXITROL R400S-1/2 / R400S12 (BRAND NEW), shipping cost = $12.90 | 99.7% |
![]() | $91.00 | Condition is New, MAXITROL R400S-3/8 / R400S38 (BRAND NEW), shipping cost = $12.90 | 99.7% |
![]() | $95.91 | Condition is New, MAXITROL R400S-1/2 / R400S12 (BRAND NEW), shipping cost = $36.56 | 99.2% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $15.00 | Condition is Used, Maxitrol R400S Gas Pressure Regulator 5PSI, shipping cost = $6.00 | ![]() |
![]() | $25.00 | Condition is Used, MAXITROL R400S 5 PSIG #707K116, FREE SHIPPING | 99.9% |
![]() | $28.53 | Condition is Used, Maxitrol R400S Regulator, FREE SHIPPING | 99.9% |
![]() | $56.00 | Condition is Used, MAXITROL R400S REGULATOR 3/8" NPT 3/4", FREE SHIPPING | 100.0% |
![]() | $44.00 | Condition is Used, MAXITROL R400S 5PSI UNMP, shipping cost = $16.50 | 99.9% |
![]() | $51.00 | Condition is Used, Maxitrol R400S Gas Regulator 1/2" NPT, shipping cost = $9.00 | 98.9% |
![]() | $67.00 | Condition is Used, MAXITROL R400S / R400S (USED), shipping cost = $12.90 | 99.7% |
![]() | $40.86 | Condition is Used, Maxitrol R400S Gas Regulator 1/2"NPT 1/2PSIG USED, shipping cost = $42.12 | 99.7% |

The Maxitrol R400S 1/2 Gas Pressure Regulator is a high-performing and reliable solution designed for regulating and controlling the pressure of natural or propane gas applications. This regulator is engineered with precision machined brass components and features a durable, corrosion-resistant finish, making it suitable for both residential and commercial use.
The Maxitrol R400S is a diaphragm-sealed regulator, meaning it uses a diaphragm to separate the gas pressure from the mechanical components, resulting in longer service life and improved accuracy. It is designed to maintain a consistent gas pressure between 4 to 15 inches of water column (WC) and can handle maximum working pressures up to 250 psig.
This regulator comes equipped with a 1/2 NPT threaded connection, making it compatible with a wide range of gas lines and applications. Additionally, it includes a built-in filter regulator to protect against impurities and debris in the gas line. The Maxitrol R400S is also equipped with an adjustment knob that allows for easy pressure adjustment, allowing users to fine-tune the gas pressure to their specific needs.
The Maxitrol R400S regulator has a compact and sleek design, making it easy to install and integrate into various gas systems. It also includes a leak-before-use feature, which ensures that any potential leaks are detected before the regulator is put into service. This feature adds an extra layer of safety and peace of mind for users.
The Maxitrol R400S 1/2 Gas Pressure Regulator is built to last, with a rugged construction and high-quality materials that can withstand the demands of continuous use. It is certified to meet or exceed industry standards for gas pressure regulation, ensuring that it provides accurate and consistent pressure control for a wide range of applications. Overall, this regulator is an excellent choice for those who require a reliable, high-performing, and easy-to-use gas pressure regulator for their residential or commercial applications.
Maxitrol R400S 1/2 Gas Pressure Regulator: Pros and Cons
The Maxitrol R400S 1/2 gas pressure regulator is a popular choice for residential and light commercial applications. It offers several advantages and disadvantages, which are outlined below:
Pros:1. Reliable Performance: Maxitrol R400S regulator is known for its consistent and stable performance. It can maintain the desired pressure range accurately, making it suitable for applications where precise pressure control is essential.
2. Durability: This regulator is built to last with high-quality materials and construction. It is resistant to corrosion, making it ideal for use in harsh environments.
3. Easy Installation: The Maxitrol R400S regulator is easy to install, and it comes with a user-friendly design. It has a clear pressure gauge and adjustment knob, making it easy to set and monitor the pressure.
4. Versatile: This regulator can be used with various fuel types, including natural gas, propane, and butane. It can also handle high-pressure inputs, making it a versatile option for different applications.
Cons:1. Price: The Maxitrol R400S regulator is more expensive compared to some other models in the market. However, its durability and reliable performance justify the cost for many users.
2. Limited Capacity: This regulator may not be suitable for applications that require high flow rates or extremely high pressure. Its maximum flow rate is 20 GPM, and the maximum working pressure is 250 PSIG.
3. Size: The Maxitrol R400S regulator is larger than some other models, which may make it less suitable for applications where space is limited.
Conclusion:The Maxitrol R400S 1/2 gas pressure regulator is a reliable and durable option for residential and light commercial applications. It offers precise pressure control, is resistant to corrosion, and can handle various fuel types. However, it is more expensive than some other models, and it may not be suitable for applications with high flow rates or extremely high pressure.
Recommendation:If you are looking for a reliable and durable gas pressure regulator for residential or light commercial applications, the Maxitrol R400S 1/2 gas pressure regulator is an excellent choice. Its precise pressure control, ease of installation, and versatility make it a worthwhile investment. However, if you have limited budget or require a higher flow rate or pressure, you may want to consider other options in the market.
Details:
Maxitrol R400S 1/2 gas pressure regulator. These services include: ups 3 day select. Item is sold as pictured.
The cost of combined shipping depends on weight, location buyer and size box. Ups 2 day air am. Ups next day am. Prices for these options may differ from standard ground shipping.
specifications maxohvac:
- brand: Maxitrol
- mpn: R400s
- part type: Pressure Regulator
returns maxohvac:
- time: 30 days
- paid by: buyer
- method: money back
- policy: returns accepted
offer maxohvac:
- options: ship-to-home
- started: march 13, 2025
- best offers: true
- availability: in stock
- sold #: 18
- in stock #: 5
- prices: $15.00–$99.99
- item condition:
- New – Open box
- New
- Used
payments maxohvac:
- money order
- credit card: discover
- wallet: google-pay
- other
- check
seller maxohvac:
- # reviews: 21420
- rating: 99.6%
- city: kawkawlin, michigan
shipping maxohvac:
- transit: 2-6 days
- service: usps priority mail, ups ground, usps priority mail express, ups next day air
- class: expedited, standard, one-day
- type: calculated
- carrier: usps, ups
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
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