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  • 1/2" NPT Angle Radiator Steam Trap Product Image
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    1/2" NPT Angle Radiator Steam Trap 122A 1/2" NPT Angle Radiator Steam Trap
    SKU: 122A
    Brand: Barnes & Jones
    (2)
    $65.40 each
    122
    Fri, Apr 23
    122
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    122 Fri, Apr 23
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  • 3/4" Big Mouth Main Air Vent Product Image
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    3/4" Big Mouth Main Air Vent BJ-3BM 3/4" Big Mouth Main Air Vent
    SKU: BJ-3BM
    Brand: Barnes & Jones
    (3)
    $93.59 each
    60
    Fri, Apr 23
    60
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    60 Fri, Apr 23
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  • 3/4" NPT Angle Radiator Steam Trap Product Image
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    3/4" NPT Angle Radiator Steam Trap 134A 3/4" NPT Angle Radiator Steam Trap
    SKU: 134A
    Brand: Barnes & Jones
    $97.86 each
    41
    Fri, Apr 23
    41
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    41 Fri, Apr 23
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  • Universal Float and Thermostatic Faceplate Repair Kit (15 PSI) Product Image
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    Universal Float and Thermostatic Faceplate Repair Kit (15 PSI) FT15 Universal Float and Thermostatic Faceplate Repair Kit (15 PSI)
    SKU: FT15
    Brand: Barnes & Jones
    $141.18 each
    31
    Fri, Apr 23
    31
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    31 Fri, Apr 23
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  • 3/4" H-Pattern Float & Thermostatic Steam Trap (15 PSIG) Product Image
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    3/4" H-Pattern Float & Thermostatic Steam Trap (15 PSIG) FT2015-3 3/4" H-Pattern Float & Thermostatic Steam Trap (15 PSIG)
    SKU: FT2015-3
    Brand: Barnes & Jones
    (1)
    $144.99 each
    29
    Fri, Apr 23
    29
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    29 Fri, Apr 23
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  • 3/4" NPT Vacuum Breaker Product Image
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    3/4" NPT Vacuum Breaker 3875 3/4" NPT Vacuum Breaker
    SKU: 3875
    Brand: Barnes & Jones
    $63.86 each
    12
    Fri, Apr 23
    12
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    12 Fri, Apr 23
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  • Cage Unit for<br>1/2" Dunham-Bush Steam Traps Product Image
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    Cage Unit for 1/2" Dunham-Bush Steam Traps 1950 Cage Unit for 1/2" Dunham-Bush Steam Traps
    SKU: 1950
    Brand: Barnes & Jones
    $44.19 each
    34
    Fri, Apr 23
    34
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    34 Fri, Apr 23
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  • Cage Unit for<br>1/2" Steam Traps Product Image
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    Cage Unit for 1/2" Steam Traps 1721 Cage Unit for 1/2" Steam Traps
    SKU: 1721
    Brand: Barnes & Jones
    $52.29 each
    35
    Fri, Apr 23
    35
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    35 Fri, Apr 23
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  • 1/2" NPT Straight Radiator Steam Trap Product Image
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    1/2" NPT Straight Radiator Steam Trap 122S-BARNES-JONES 1/2" NPT Straight Radiator Steam Trap
    SKU: 122S-BARNES-JONES
    Brand: Barnes & Jones
    $85.99 each
    22
    Fri, Apr 23
    22
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    22 Fri, Apr 23
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  • Cage Unit for Hoffman Specialty Traps Product Image
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    Cage Unit for Hoffman Specialty Traps 3500 Cage Unit for Hoffman Specialty Traps
    SKU: 3500
    Brand: Barnes & Jones
    $41.99 each
    17
    Fri, Apr 23
    17
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    17 Fri, Apr 23
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  • Cover for Cage Unit 1950 Product Image
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    Cover for Cage Unit 1950 1950C Cover for Cage Unit 1950
    SKU: 1950C
    Brand: Barnes & Jones
    $20.61 each
    36
    Fri, Apr 23
    36
    QtyArrives
    36 Fri, Apr 23
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  • 1" H-Pattern Float & Thermostatic Steam Trap (15 PSIG) Product Image
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    1" H-Pattern Float & Thermostatic Steam Trap (15 PSIG) FT2015-4 1" H-Pattern Float & Thermostatic Steam Trap (15 PSIG)
    SKU: FT2015-4
    Brand: Barnes & Jones
    $176.45 each
    1
    Fri, Apr 23
    1
    QtyArrives
    1 Fri, Apr 23
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  • Cover for Cage Unit 3500 Product Image
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    Cover for Cage Unit 3500 3500C Cover for Cage Unit 3500
    SKU: 3500C
    Brand: Barnes & Jones
    $20.36 each
    Fri, May 7 – Fri, May 14
    Arrives
    Fri, May 7 – Fri, May 14
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  • Cage Unit for<br>3/4" Steam Traps Product Image
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    Cage Unit for 3/4" Steam Traps 1929 Cage Unit for 3/4" Steam Traps
    SKU: 1929
    Brand: Barnes & Jones
    $43.26 each
    11
    Fri, Apr 23
    11
    QtyArrives
    11 Fri, Apr 23
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  • Gasket Kit for FT2015-3 Product Image
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    Gasket Kit for FT2015-3 1330-196 Gasket Kit for FT2015-3
    SKU: 1330-196
    Brand: Barnes & Jones
    $8.66 each
    4
    Fri, Apr 23
    4
    QtyArrives
    4 Fri, Apr 23
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  • Cage Unit for Model B1 (integral seat with integral bellows) Trane Traps Product Image
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    Cage Unit for Model B1 (integral seat with integral bellows) Trane Traps 4320 Cage Unit for Model B1 (integral seat with integral bellows) Trane Traps
    SKU: 4320
    Brand: Barnes & Jones
    $42.83 each
    6
    Fri, Apr 23
    6
    QtyArrives
    6 Fri, Apr 23
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  • 1/2" NPT Vacuum Breaker Product Image
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    1/2" NPT Vacuum Breaker 3856 1/2" NPT Vacuum Breaker
    SKU: 3856
    Brand: Barnes & Jones
    $59.25 each
    Fri, May 7 – Fri, May 14
    Arrives
    Fri, May 7 – Fri, May 14
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  • Cage Unit for Warren Webster Traps Product Image
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    Cage Unit for Warren Webster Traps 1972-BARNES Cage Unit for Warren Webster Traps
    SKU: 1972-BARNES
    Brand: Barnes & Jones
    $67.85 each
    Fri, May 7 – Fri, May 14
    Arrives
    Fri, May 7 – Fri, May 14
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  • Cage Unit for Warren Webster Traps (512/513 Series) Product Image
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    Cage Unit for Warren Webster Traps (512/513 Series) 1998 Cage Unit for Warren Webster Traps (512/513 Series)
    SKU: 1998
    Brand: Barnes & Jones
    $73.24 each
    1
    Fri, Apr 23
    1
    QtyArrives
    1 Fri, Apr 23
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  • 1/2" Big Mouth Crossover Trap Product Image
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    1/2" Big Mouth Crossover Trap BJ-2CR 1/2" Big Mouth Crossover Trap
    SKU: BJ-2CR
    Brand: Barnes & Jones
    $89.99 each
    4
    Fri, Apr 23
    4
    QtyArrives
    4 Fri, Apr 23
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  • 3/4" Big Mouth Crossover Trap Product Image
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    3/4" Big Mouth Crossover Trap BJ-3CR 3/4" Big Mouth Crossover Trap
    SKU: BJ-3CR
    Brand: Barnes & Jones
    $89.99 each
    Fri, May 7 – Fri, May 14
    Arrives
    Fri, May 7 – Fri, May 14
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 3/4" NPT Straight Radiator Steam Trap Product Image
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    3/4" NPT Straight Radiator Steam Trap 134S 3/4" NPT Straight Radiator Steam Trap
    SKU: 134S
    Brand: Barnes & Jones
    $101.98 each
    1
    Fri, Apr 23
    1
    QtyArrives
    1 Fri, Apr 23
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  • Repair Kit for 1" Barnes and Jones FT2015-4 Product Image
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    Repair Kit for 1" Barnes and Jones FT2015-4 RK2015-4 Repair Kit for 1" Barnes and Jones FT2015-4
    SKU: RK2015-4
    Brand: Barnes & Jones
    $187.09 each
    3
    Fri, Apr 23
    3
    QtyArrives
    3 Fri, Apr 23
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  • Cage Unit for Trane Traps Product Image
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    Cage Unit for Trane Traps 4321 Cage Unit for Trane Traps
    SKU: 4321
    Brand: Barnes & Jones
    $40.71 each
    Fri, May 7 – Fri, May 14
    Arrives
    Fri, May 7 – Fri, May 14
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FAQs, Manuals & Videos

Resources

Articles

  • Barnes & Jones was founded nearly 120 years ago by two engineers, Walter Barnes, a graduate of The Massachusetts Institute of Technology, and Bill Jones a graduate of The Worcester Polytechnic Institute. Around 1897, the two joined forces to design and layout two pipe central steam heating systems for new construction in and around Boston, New York City and Chicago.

    Today, Barnes & Jones Inc. manufactures 100% Calibrated Cage Unit inserts for every heating steam trap body ever made. Barnes and Jones products are available throughout North America, Central and South America and most of Europe by over 10,000 representatives. The operating principle, introduced in 1902, remains unchanged as Cage Units emerge, today, as the preferred automatic valving solution for high-tech environmental control systems.

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