
3143 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $18.74 | Condition is New, Barnes & Jones 3143 Cage Unit Steam Trap Interior 1/2" Type A NOS, shipping cost = $6.99 | ![]() |

The Barnes Jones 3143 34 Cage Unit Steam Trap is a high-performance steam trap designed for reliable and efficient steam system operation. This trap is characterized by its 34 cage unit design, which provides increased surface area for condensate separation.
The interior of the Barnes Jones 3143 Steam Trap features a number of key components that contribute to its effectiveness. At the heart of the trap is a thermostatic disc, which senses the temperature of the condensate and opens or closes the trap accordingly. This disc is made from a durable, corrosion-resistant material to ensure long-lasting performance.
The cage unit itself is made up of a series of interconnected wires that form a fine mesh. As steam passes through the trap, any condensate present in the steam is separated and collected in the cage unit. The wires in the cage unit provide a large surface area for condensate to form droplets, which then drain away through the bottom outlet of the trap.
The Barnes Jones 3143 Steam Trap also includes a non-return valve, which prevents backflow of condensate into the steam line during periods of low steam pressure. This valve is located at the top of the trap and is designed to open and close in response to changes in steam pressure.
The exterior of the trap is constructed from heavy-duty cast iron, which provides excellent heat transfer and resistance to corrosion. The trap is also equipped with a convenient drain cock, which allows for easy removal of accumulated condensate.
Overall, the Barnes Jones 3143 34 Cage Unit Steam Trap is an excellent choice for applications where reliable and efficient steam system operation is essential. Its durable design, combined with its effective condensate separation capabilities, make it a top performer in its class.
Barnes Jones 3143 34 cage unit steam traps are commonly used in industrial processes to protect against carryover of condensate in steam lines. Here are some pros and cons of buying this specific model:
Pros:1. Reliability: Barnes Jones is a reputable brand known for manufacturing high-quality steam traps. The 3143 34 cage unit is built to last with robust materials and design.
2. Efficiency: This model is designed to operate with minimal pressure drop, ensuring that steam is used efficiently in the process. The cage design allows for larger droplets to be trapped, reducing the frequency of operation and saving energy.
3. Ease of Installation: The Barnes Jones 3143 34 cage unit is easy to install with a threaded connection, making it a popular choice for many applications.
Cons:1. Cost: Compared to other types of steam traps, cage units can be more expensive due to their more complex design and larger size.
2. Maintenance: The cage design requires more frequent cleaning and maintenance compared to other types of steam traps. This is due to the larger droplets that can accumulate in the cage, leading to increased fouling and potential blockages.
3. Limited Applications: Cage units are not suitable for all applications, particularly those with high levels of dirt or other contaminants, as the cage design can become clogged more easily.
In conclusion, the Barnes Jones 3143 34 cage unit steam trap offers reliability, efficiency, and ease of installation, but comes with higher costs, increased maintenance requirements, and limited applications.
Recommendation:If your application requires a reliable and efficient steam trap, and the added costs and maintenance requirements of a cage unit are acceptable, then the Barnes Jones 3143 34 cage unit is a good choice. However, if you have a budget constraint or your application involves high levels of contaminants, you may want to consider other types of steam traps, such as thermal traps or inverted bucket traps, which may be more suitable for your needs.
Details:
Lot of 34 Barnes and Jones cage unit #3143 steam trap interior replacement nos.
specifications centrafurn:
- brand: Barnes And Jones
- mpn: 3143
- model: Barnes And Jones 3143
- power source: Steam
- type: Central Furnace
- unit type: Unit
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
seller centrafurn:
- # reviews: 1801
- rating: 100.0%
- city: jasper, indiana
returns centrafurn:
- paid by: buyer
- policy: returns accepted
- method: money back
- time: 30 days
offer centrafurn:
- sold #: 16
- price: $18.74
- item condition: New
- availability: in stock
- in stock #: 1
- started: april 21, 2025
- options: ship-to-home
payments centrafurn:
- other
- credit card: visa
- wallet: google-pay
shipping centrafurn:
- class: standard
- transit: 3-8 days
- carrier: usps
- service: usps ground advantage
- type: fixed

