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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 Barnes & Jones
    SKU: 122A
    Brand: Barnes & Jones
    (2)
    $64.93 each
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    231
    Mon, Nov 8
    231
    QtyArrives
    231 Mon, Nov 8
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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 Barnes & Jones
    SKU: BJ-3BM
    Brand: Barnes & Jones
    (3)
    $95.40 each
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    93
    Mon, Nov 8
    93
    QtyArrives
    93 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 134A
    Brand: Barnes & Jones
    $102.26 each
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    32
    Mon, Nov 8
    32
    QtyArrives
    32 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: FT2015-3
    Brand: Barnes & Jones
    (1)
    $164.27 each
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    2
    Mon, Nov 8
    2
    QtyArrives
    2 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: FT15
    Brand: Barnes & Jones
    $153.07 each
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    31
    Mon, Nov 8
    31
    QtyArrives
    31 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 1950
    Brand: Barnes & Jones
    $45.53 each
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    31
    Mon, Nov 8
    31
    QtyArrives
    31 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 3875
    Brand: Barnes & Jones
    $63.86 each
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    5
    Mon, Nov 8
    5
    QtyArrives
    5 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 1950C
    Brand: Barnes & Jones
    $21.53 each
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    19
    Mon, Nov 8
    19
    QtyArrives
    19 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 122S-BARNES-JONES
    Brand: Barnes & Jones
    $92.57 each
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    14
    Mon, Nov 8
    14
    QtyArrives
    14 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 3500
    Brand: Barnes & Jones
    $43.26 each
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    19
    Mon, Nov 8
    19
    QtyArrives
    19 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: FT2015-4
    Brand: Barnes & Jones
    $184.38 each
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    Fri, Nov 19 – Mon, Nov 29
    Arrives
    Fri, Nov 19 – Mon, Nov 29
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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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 Barnes & Jones
    SKU: 1721
    Brand: Barnes & Jones
    $52.29 each
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    Fri, Nov 19 – Mon, Nov 29
    Arrives
    Fri, Nov 19 – Mon, Nov 29
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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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 Barnes & Jones
    SKU: 3500C
    Brand: Barnes & Jones
    $20.36 each
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    11
    Mon, Nov 8
    11
    QtyArrives
    11 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 1929
    Brand: Barnes & Jones
    $55.45 each
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    10
    Mon, Nov 8
    10
    QtyArrives
    10 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 1330-196
    Brand: Barnes & Jones
    $9.22 each
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    Fri, Nov 19 – Mon, Nov 29
    Arrives
    Fri, Nov 19 – Mon, Nov 29
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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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 Barnes & Jones
    SKU: 3856
    Brand: Barnes & Jones
    $61.92 each
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    Fri, Nov 19 – Mon, Nov 29
    Arrives
    Fri, Nov 19 – Mon, Nov 29
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • Cage Unit for Illinois Traps Product Image
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    Cage Unit for Illinois Traps 2819 Cage Unit for Illinois Traps
    SKU: 2819 Barnes & Jones
    SKU: 2819
    Brand: Barnes & Jones
    $68.50 each
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    41
    Mon, Nov 8
    41
    QtyArrives
    41 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: BJ-2CR
    Brand: Barnes & Jones
    $89.99 each
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    14
    Mon, Nov 8
    14
    QtyArrives
    14 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 1998
    Brand: Barnes & Jones
    $73.24 each
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    45
    Mon, Nov 8
    45
    QtyArrives
    45 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 4320
    Brand: Barnes & Jones
    $42.83 each
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    3
    Mon, Nov 8
    3
    QtyArrives
    3 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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 Barnes & Jones
    SKU: 134S
    Brand: Barnes & Jones
    $101.23 each
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    Fri, Nov 19 – Mon, Nov 29
    Arrives
    Fri, Nov 19 – Mon, Nov 29
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • Float & Thermostatic Steam Trap Repair Kit for 3/4" 53-FT Product Image
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    Float & Thermostatic Steam Trap Repair Kit for 3/4" 53-FT FT53 Float & Thermostatic Steam Trap Repair Kit for 3/4" 53-FT
    SKU: FT53 Barnes & Jones
    SKU: FT53
    Brand: Barnes & Jones
    $118.30 each
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    3
    Mon, Nov 8
    3
    QtyArrives
    3 Mon, Nov 8
    Questions? Call 1-888-757-4774
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  • Cover for Cage Unit 2819 Product Image
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    Cover for Cage Unit 2819 2819C Cover for Cage Unit 2819
    SKU: 2819C Barnes & Jones
    SKU: 2819C
    Brand: Barnes & Jones
    $20.24 each
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    Fri, Nov 19 – Mon, Nov 29
    Arrives
    Fri, Nov 19 – Mon, Nov 29
    Questions? Call 1-888-757-4774 or LiveChat Img Chat Us
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  • 1" NPT Angle Radiator Steam Trap Product Image
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    1" NPT Angle Radiator Steam Trap 147A 1" NPT Angle Radiator Steam Trap
    SKU: 147A Barnes & Jones
    SKU: 147A
    Brand: Barnes & Jones
    $143.16 each
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    1
    Mon, Nov 8
    1
    QtyArrives
    1 Mon, Nov 8
    Questions? Call 1-888-757-4774
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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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