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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
    $57.99 each
    220
    Tue, Aug 25
    220
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    220 Tue, Aug 25
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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
    $89.99 each
    95
    Tue, Aug 25
    95
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    95 Tue, Aug 25
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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
    $94.99 each
    87
    Tue, Aug 25
    87
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    87 Tue, Aug 25
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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
    $124.99 each
    49
    Tue, Aug 25
    49
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    49 Tue, Aug 25
    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
    Brand: Barnes & Jones
    $61.99 each
    16
    Tue, Aug 25
    16
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    16 Tue, Aug 25
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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
    $144.99 each
    12
    Tue, Aug 25
    12
    QtyArrives
    12 Tue, Aug 25
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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
    $41.99 each
    79
    Tue, Aug 25
    79
    QtyArrives
    79 Tue, Aug 25
    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
    Brand: Barnes & Jones
    $41.99 each
    25
    Tue, Aug 25
    25
    QtyArrives
    25 Tue, Aug 25
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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
    35
    Tue, Aug 25
    35
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    35 Tue, Aug 25
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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
    8
    Tue, Aug 25
    8
    QtyArrives
    8 Tue, Aug 25
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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
    $18.99 each
    11
    Tue, Aug 25
    11
    QtyArrives
    11 Tue, Aug 25
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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
    $171.29 each
    2
    Tue, Aug 25
    2
    QtyArrives
    2 Tue, Aug 25
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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
    $18.99 each
    11
    Tue, Aug 25
    11
    QtyArrives
    11 Tue, Aug 25
    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
    Brand: Barnes & Jones
    $41.99 each
    8
    Tue, Aug 25
    8
    QtyArrives
    8 Tue, Aug 25
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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
    $41.99 each
    11
    Tue, Aug 25
    11
    QtyArrives
    11 Tue, Aug 25
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  • Repair Kit for 41T Traps Product Image
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    Repair Kit for 41T Traps 1FT Repair Kit for 41T Traps
    SKU: 1FT
    Brand: Barnes & Jones
    $228.98 each
    5
    Tue, Aug 25
    5
    QtyArrives
    5 Tue, Aug 25
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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
    $8.59 each
    Wed, Sep 2 – Tue, Sep 8
    Arrives
    Wed, Sep 2 – Tue, Sep 8
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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
    $41.99 each
    Wed, Sep 2 – Tue, Sep 8
    Arrives
    Wed, Sep 2 – Tue, Sep 8
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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
    Brand: Barnes & Jones
    $132.99 each
    1
    Tue, Aug 25
    1
    QtyArrives
    1 Tue, Aug 25
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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
    $62.99 each
    1
    Tue, Aug 25
    1
    QtyArrives
    1 Tue, Aug 25
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  • Cage Unit for Trane Traps Product Image
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    Cage Unit for Trane Traps 4270-BARNES Cage Unit for Trane Traps
    SKU: 4270-BARNES
    Brand: Barnes & Jones
    $113.50 each
    Wed, Sep 2 – Tue, Sep 8
    Arrives
    Wed, Sep 2 – Tue, Sep 8
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  • Tailpiece Extension For 122A Product Image
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    Tailpiece Extension For 122A 1272-14 Tailpiece Extension For 122A
    SKU: 1272-14
    Brand: Barnes & Jones
    $11.99 each
    Wed, Sep 2 – Tue, Sep 8
    Arrives
    Wed, Sep 2 – Tue, Sep 8
    Questions? Call 1-888-757-4774 or
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  • Cage Unit for Model H (1/2" seat in) Spirax-Sarco Traps Product Image
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    Cage Unit for Model H (1/2" seat in) Spirax-Sarco Traps 4117-BARNES Cage Unit for Model H (1/2" seat in) Spirax-Sarco Traps
    SKU: 4117-BARNES
    Brand: Barnes & Jones
    $41.99 each
    Wed, Sep 2 – Tue, Sep 8
    Arrives
    Wed, Sep 2 – Tue, Sep 8
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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
    $41.99 each
    Wed, Sep 2 – Tue, Sep 8
    Arrives
    Wed, Sep 2 – Tue, Sep 8
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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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