
3100-103 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $22.47 | Condition is New – Open box, NEW GENUINE ROBERTSHAW 3100-103 MINI-GARD PRESSURE CONTROL MG21-2033, FREE SHIPPING | 100.0% |
![]() | $12.00 | Condition is New – Open box, (NEW) ROBERTSHAW 3100-103 MC21-2033 Mini-Gard Pressure Control Switch , shipping cost = $11.95 | ![]() |
![]() | $19.50 | Condition is New – Open box, Robertshaw Mini-Gard Pressure Control 3100-103, shipping cost = $7.49 | 99.7% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $19.95 | Condition is New, New Robertshaw 3100-103 Pressure Control MG21-2033 3100103 NIFP, FREE SHIPPING | 100.0% |
![]() | $20.00 | Condition is New, New Robertshaw 3100-103 Pressure Control MG21-2033 3100103 NIFP, FREE SHIPPING | 100.0% |
![]() | $20.00 | Top Pick! Condition is New, OEM Robertshaw 3100-103 Pressure Control MG21-2033, 3100103 NIFP, shipping cost = $2.50 | 100.0% |
![]() | $17.59 | Condition is New, NEW ROBERTSHAW 3100-103 PRESSURE CONTROL MG21-2033 3100103, shipping cost = $8.99 | 99.6% |
![]() | $29.99 | Condition is New, New Robertshaw 3100-103 Pressure Control MG21-2033 3100103 NIFP, FREE SHIPPING | 100.0% |
![]() | $25.00 | Top Pick! Condition is New, NEW ROBERTSHAW 3100-103 PRESSURE CONTROL MG21-2033 3100103, shipping cost = $9.95 | ![]() |
![]() | $23.40 | Condition is New, 4 New Robertshaw Mini-gard Pressure Control Sensors 3x 3100-151 & 1x 3100-103, shipping cost = $23.76 | 99.7% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $10.99 | Condition is Used, Robertshaw 3100-103 Mini-Gard Pressure Control 1/4" 410PSI, FREE SHIPPING | 100.0% |

Introducing the Robertshaw 3100-103 Mini-Gard Pressure Control Valve with MG21-2033 Temperature Control, a compact yet powerful solution for your heating needs. Designed with the latest technology, this valve provides precise temperature and pressure control, ensuring optimal performance and energy efficiency.
The Mini-Gard Pressure Control Valve features a rugged brass construction, built to withstand the rigors of commercial and industrial applications. The valve body is equipped with a 3/8-inch NPT male thread connection for easy installation and integration into various systems. The valve is also outfitted with a 1/4-inch NPT female temperature sensor port for accurate temperature sensing and regulation.
The pressure control mechanism in this valve is designed to maintain consistent water pressure within your system, preventing fluctuations that can negatively impact system performance and potentially cause damage. The adjustable pressure setting allows you to customize the pressure to meet the specific requirements of your application.
The temperature control function, powered by the MG21-2033 temperature control, provides precise temperature regulation. The temperature controller features a large, easy-to-read display, allowing you to monitor and adjust the temperature setting quickly and intuitively. The controller also includes a built-in safety feature, which automatically shuts off the heating element when the temperature exceeds the set limit, ensuring the safety of your system and the users.
The Mini-Gard Pressure Control Valve is engineered to operate smoothly and quietly, minimizing noise and maintenance requirements. The valve is also designed with a compact footprint, making it an excellent choice for applications with limited space.
In summary, the Robertshaw 3100-103 Mini-Gard Pressure Control Valve with MG21-2033 Temperature Control offers precise temperature and pressure control, rugged construction, easy installation, and compact design, making it an ideal choice for a wide range of commercial and industrial heating applications.
The Robertshaw 3100-103 Mini-Gas Pressure Control MG21-2033 is a popular pressure control valve used in various appliances, including water heaters and boilers. Here are some pros and cons that might help you make an informed decision about purchasing this valve:
Pros:1. Reliable and Durable: Robertshaw is a reputable brand known for producing high-quality valves. The Mini-Gas Pressure Control MG21-2033 is no exception. It is built to last and can handle high-pressure applications.
2. Easy Installation: This valve comes with clear instructions and is relatively easy to install. It can be used as a replacement for old or faulty valves.
3. Adjustable Pressure: The valve allows for easy adjustment of the pressure range, ensuring that your appliance operates at optimal efficiency and safety.
4. Affordable: Compared to other pressure control valves in the market, the Robertshaw Mini-Gas Pressure Control MG21-2033 is quite affordable.
Cons:1. Limited Compatibility: This valve is designed specifically for use with natural gas or propane applications. It may not be compatible with other fuel types.
2. No Built-In Thermostat: Unlike some other pressure control valves, the Robertshaw Mini-Gas Pressure Control MG21-2033 does not have a built-in thermostat. This means that you may need to purchase and install a separate thermostat if your appliance requires temperature control.
3. Requires Regular Maintenance: Like all mechanical components, this valve requires regular maintenance to ensure proper functioning. This includes checking the pressure setting and ensuring that there are no leaks.
In conclusion, the Robertshaw 3100-103 Mini-Gas Pressure Control MG21-2033 is a reliable and durable valve that is easy to install and adjust. It is also affordable compared to other pressure control valves in the market. However, it has limited compatibility with fuel types and does not have a built-in thermostat. If you are looking for a pressure control valve for a natural gas or propane appliance and are willing to perform regular maintenance, then this valve is a good choice.
Recommendation: If you are in the market for a pressure control valve for a natural gas or propane appliance and are looking for a reliable and affordable option, then the Robertshaw 3100-103 Mini-Gas Pressure Control MG21-2033 is a good choice. Just be sure to check that it is compatible with your specific application and that you are willing to perform regular maintenance.
Details:
From storage stored in a smoke pet free location: box 1275.
specifications indusswitch:
- brand: Robertshaw
- mpn: 3100-103
- part type: Pressure Control
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Pressure Switches
payments indusswitch:
- credit card: mastercard
- cash
- other
- wallet: paypal
offer indusswitch:
- in stock #: 5
- prices: $10.99–$29.99
- item condition:
- New – Open box
- New
- Used
- started: april 18, 2026
- best offers: true
- options: ship-to-home
- sold #: 8
- availability: in stock
shipping indusswitch:
- class: standard, one-day, expedited
- carrier: usps, ups
- service: usps ground advantage, ups next day air, usps priority mail express
- transit: 4-9 days
- type: calculated
returns indusswitch:
- paid by: buyer
- method: money back
- policy: returns accepted
- time: 30 days
seller indusswitch:
- rating: 100.0%
- # reviews: 4155
- city: batavia, ohio
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