
A-339 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $16.26 | Condition is New, DWYER A-339 1/8" NPT x 3/16" Hose Insert Brass Manometer Fitting, shipping cost = $24.33 | 97.9% |

The Dwyer A-339 1/8 NPT 3/16 hose manometer fitting is a versatile and essential component for various measurement and monitoring applications. This fitting is engineered to accept hoses with a 1/8 NPT (National Pipe Thread) connection, while the hose itself features a 3/16 inch outer diameter.
The A-339 manometer fitting is designed to interface seamlessly with a wide range of manometers and pressure gauges, enabling accurate measurement and monitoring of fluid pressure or vacuum levels. This fitting is made from high-quality brass material, ensuring durability and resistance to corrosion, making it suitable for use in various industrial and commercial environments.
The 1/8 NPT thread connection on the fitting is easily identifiable by its distinctive conical shape and the fine, even threads that ensure a secure connection with the hose and the manometer. The 3/16 inch hose size is a common standard for many applications, allowing for interchangeability and compatibility with a wide range of hoses and other components.
This manometer fitting is designed to withstand working pressures of up to 60 psi (pounds per square inch), making it suitable for use in applications where moderate to high pressure levels are expected. The brass construction also provides excellent thermal conductivity, ensuring that the fitting remains at a consistent temperature, which is essential for accurate pressure readings.
The Dwyer A-339 1/8 NPT 3/16 hose manometer fitting is easy to install and maintain, with no special tools required for installation. The fitting comes with a protective plastic cap that covers the threaded end when not in use, preventing contamination and damage to the threads. The cap also features a conveniently located handle, making it easy to remove and replace the hose when necessary.
In summary, the Dwyer A-339 1/8 NPT 3/16 hose manometer fitting is an essential component for various measurement and monitoring applications, offering excellent durability, compatibility, and ease of use. Its high-quality brass construction, standard thread size, and moderate working pressure rating make it a versatile and reliable choice for a wide range of industrial and commercial applications.
The Dwyer A-339 1/8 NPT 3/16 hose manometer fitting is a pressure measuring accessory commonly used in various industrial and laboratory applications. Here are some pros and cons that might help you make an informed decision about purchasing this product:
Pros:1. Precision and Accuracy: The manometer fitting is designed for high precision and accuracy, ensuring reliable pressure measurement readings.
2. Durable Construction: The fitting is made of brass material, which is known for its durability and resistance to corrosion.
3. Versatile: The 1/8 NPT thread size is a common standard in many industries, making the fitting a versatile choice for various applications.
4. Easy to Install: The manometer fitting is easy to install, requiring only basic plumbing skills and tools.
5. Affordable: Compared to other pressure measuring devices, the manometer fitting is an affordable option for those on a budget.
Cons:1. Manual Reading: The manometer fitting requires manual reading, which can be time-consuming and prone to human error.
2. Limited Pressure Range: The manometer fitting is suitable for lower pressure ranges, making it less ideal for applications requiring high pressure measurement.
3. Requires a Manometer: The manometer fitting is only a component of a pressure measuring system, and a separate manometer is required to read the pressure.
4. Limited Compatibility: The manometer fitting is only suitable for use with hoses and not directly with process lines or other types of connections.
Conclusion:The Dwyer A-339 1/8 NPT 3/16 hose manometer fitting is an affordable, precise, and durable pressure measuring accessory. Its versatile design and easy installation make it a popular choice for various industrial and laboratory applications. However, its limited pressure range, manual reading requirement, and compatibility with only hoses are important considerations to keep in mind. Ultimately, if your application requires accurate pressure measurement within a lower pressure range and you have the necessary equipment, including a manometer, then the Dwyer A-339 1/8 NPT 3/16 hose manometer fitting could be an excellent investment.
Details:
1/8 npt x 3/16 hose insert. The Dwyer A-339 hose insert fitting is a precision brass adapter designed for use with water manometers and low-pressure testing equipment. Commonly used in rego 1212 manometer test kits and compatible with Dwyer 2020 gauges, the A-339 fitting is ideal for hvac, propane, natural gas pressure testing applications where accuracy reliability are critical. Key: : genuine Dwyer oem fitting.
Solid brass construction for durability. Designed for water manometers low-pressure testing. Ideal for hvac, LP gas, and natural gas service technicians. This fitting features a 1/8 male npt thread on one end and 3/16 hose insert the other, allowing secure connection between tubing pressure measurement devices.
specifications maxohvac:
- brand: Dwyer
- mpn: A-339
- type: Hose Insert / Adapter Fitting
- unit type: Unit
- country of origin: United States
returns maxohvac:
- paid by: buyer
- method: money back
- policy: returns accepted
- time: 14 days
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
payments maxohvac:
- wallet: apple-pay
- credit card: diners-club
- other
shipping maxohvac:
- type: calculated
- carrier: ups, fedex
- transit: 8-14 days
- class: economy, standard
- service: ups ground saver, fedex ground economy, ups ground
seller maxohvac:
- rating: 95.7%
- # reviews: 1268
- city: brandon, mississippi
offer maxohvac:
- price: $16.26
- item condition: New
- sold #: 9
- options: ship-to-home
- availability: in stock
- in stock #: 1
- best offers: true
- started: january 1, 2026
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