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Pneumatic Quick Couplers

Pneumatic quick couplers connect and disconnect air lines in one quick motion, no tools required. This collection covers the full range of air quick couplers and plugs across every interchange, from miniature 2 Series to industrial body sizes, in steel, brass, and stainless. Filter by series, body size, thread, and material to find the exact coupler or plug your air system needs.

  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 473.00
    $ 473.00 - $ 473.00
    $ 473.00
    $ 379.00
    $ 379.00 - $ 379.00
    $ 379.00

    Foster BL1714, 3/8" Industrial Coupler x 3/8" Push-On Hose Stem, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL1714 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    $ 473.00
    $ 473.00 - $ 473.00
    $ 473.00
    $ 379.00
    $ 379.00 - $ 379.00
    $ 379.00
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 436.00
    $ 436.00 - $ 436.00
    $ 436.00
    $ 349.00
    $ 349.00 - $ 349.00
    $ 349.00

    Foster 1714, 3/8" Industrial Coupler x 3/8" Push-On Hose Stem, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 1714 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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    $ 436.00
    $ 436.00 - $ 436.00
    $ 436.00
    $ 349.00
    $ 349.00 - $ 349.00
    $ 349.00
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 583.00
    $ 583.00 - $ 583.00
    $ 583.00
    $ 468.00
    $ 468.00 - $ 468.00
    $ 468.00

    Foster 4904S, 3/8" Industrial Coupler x 1/2" Hose ID, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4904S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...

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    $ 583.00
    $ 583.00 - $ 583.00
    $ 583.00
    $ 468.00
    $ 468.00 - $ 468.00
    $ 468.00
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 594.00
    $ 594.00 - $ 594.00
    $ 594.00
    $ 475.00
    $ 475.00 - $ 475.00
    $ 475.00

    Foster BL4904, 3/8" Industrial Coupler x 1/2" Hose ID, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4904 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    $ 594.00
    $ 594.00 - $ 594.00
    $ 594.00
    $ 475.00
    $ 475.00 - $ 475.00
    $ 475.00
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 478.00
    $ 478.00 - $ 478.00
    $ 478.00
    $ 382.00
    $ 382.00 - $ 382.00
    $ 382.00

    Foster 4904, 3/8" Industrial Coupler x 1/2" Hose ID, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4904 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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    $ 478.00
    $ 478.00 - $ 478.00
    $ 478.00
    $ 382.00
    $ 382.00 - $ 382.00
    $ 382.00
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 566.00
    $ 566.00 - $ 566.00
    $ 566.00
    $ 452.00
    $ 452.00 - $ 452.00
    $ 452.00

    Foster 4804W, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, Water, Brass/SS

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4804W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...

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    $ 566.00
    $ 566.00 - $ 566.00
    $ 566.00
    $ 452.00
    $ 452.00 - $ 452.00
    $ 452.00
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 602.00
    $ 602.00 - $ 602.00
    $ 602.00
    $ 482.00
    $ 482.00 - $ 482.00
    $ 482.00

    Foster 4804S, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4804S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...

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    $ 602.00
    $ 602.00 - $ 602.00
    $ 602.00
    $ 482.00
    $ 482.00 - $ 482.00
    $ 482.00
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 874.00
    $ 874.00 - $ 874.00
    $ 874.00
    $ 698.00
    $ 698.00 - $ 698.00
    $ 698.00

    Foster 4804S/S, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, 303 Stainless

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4804S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Serie...

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    $ 874.00
    $ 874.00 - $ 874.00
    $ 874.00
    $ 698.00
    $ 698.00 - $ 698.00
    $ 698.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 587.00
    $ 587.00 - $ 587.00
    $ 587.00
    $ 470.00
    $ 470.00 - $ 470.00
    $ 470.00

    Foster BL4804, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4804 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    $ 587.00
    $ 587.00 - $ 587.00
    $ 587.00
    $ 470.00
    $ 470.00 - $ 470.00
    $ 470.00
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 492.00
    $ 492.00 - $ 492.00
    $ 492.00
    $ 395.00
    $ 395.00 - $ 395.00
    $ 395.00

    Foster 4804, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4804 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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    $ 492.00
    $ 492.00 - $ 492.00
    $ 492.00
    $ 395.00
    $ 395.00 - $ 395.00
    $ 395.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 576.00
    $ 576.00 - $ 576.00
    $ 576.00
    $ 461.00
    $ 461.00 - $ 461.00
    $ 461.00

    Foster BL4704, 3/8" Industrial Coupler x 5/16" Hose ID, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4704 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    $ 576.00
    $ 576.00 - $ 576.00
    $ 576.00
    $ 461.00
    $ 461.00 - $ 461.00
    $ 461.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 503.00
    $ 503.00 - $ 503.00
    $ 503.00
    $ 402.00
    $ 402.00 - $ 402.00
    $ 402.00

    Foster 4704, 3/8" Industrial Coupler x 5/16" Hose ID, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4704 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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    $ 503.00
    $ 503.00 - $ 503.00
    $ 503.00
    $ 402.00
    $ 402.00 - $ 402.00
    $ 402.00
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  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 566.00
    $ 566.00 - $ 566.00
    $ 566.00
    $ 454.00
    $ 454.00 - $ 454.00
    $ 454.00

    Foster 4604W, 3/8" Industrial Coupler x 1/4" Hose ID, 4 Series, Water, Brass/SS

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4604W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...

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    $ 566.00
    $ 566.00 - $ 566.00
    $ 566.00
    $ 454.00
    $ 454.00 - $ 454.00
    $ 454.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 569.00
    $ 569.00 - $ 569.00
    $ 569.00
    $ 456.00
    $ 456.00 - $ 456.00
    $ 456.00

    Foster BL4604, 3/8" Industrial Coupler x 1/4" Hose ID, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4604 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    $ 569.00
    $ 569.00 - $ 569.00
    $ 569.00
    $ 456.00
    $ 456.00 - $ 456.00
    $ 456.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 478.00
    $ 478.00 - $ 478.00
    $ 478.00
    $ 382.00
    $ 382.00 - $ 382.00
    $ 382.00

    Foster 4604, 3/8" Industrial Coupler x 1/4" Hose ID, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4604 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

    View full details
    $ 478.00
    $ 478.00 - $ 478.00
    $ 478.00
    $ 382.00
    $ 382.00 - $ 382.00
    $ 382.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 583.00
    $ 583.00 - $ 583.00
    $ 583.00
    $ 468.00
    $ 468.00 - $ 468.00
    $ 468.00

    Foster 4504W, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Water, Brass/SS

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4504W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...

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    $ 583.00
    $ 583.00 - $ 583.00
    $ 583.00
    $ 468.00
    $ 468.00 - $ 468.00
    $ 468.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 576.00
    $ 576.00 - $ 576.00
    $ 576.00
    $ 461.00
    $ 461.00 - $ 461.00
    $ 461.00

    Foster 4504S, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4504S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...

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    $ 576.00
    $ 576.00 - $ 576.00
    $ 576.00
    $ 461.00
    $ 461.00 - $ 461.00
    $ 461.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 576.00
    $ 576.00 - $ 576.00
    $ 576.00
    $ 461.00
    $ 461.00 - $ 461.00
    $ 461.00

    Foster 4504H, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Heat/Viton, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4504H is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — ...

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    $ 576.00
    $ 576.00 - $ 576.00
    $ 576.00
    $ 461.00
    $ 461.00 - $ 461.00
    $ 461.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 580.00
    $ 580.00 - $ 580.00
    $ 580.00
    $ 464.00
    $ 464.00 - $ 464.00
    $ 464.00

    Foster BL4504, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Ball Lock, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4504 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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    $ 580.00
    $ 580.00 - $ 580.00
    $ 580.00
    $ 464.00
    $ 464.00 - $ 464.00
    $ 464.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 489.00
    $ 489.00 - $ 489.00
    $ 489.00
    $ 391.00
    $ 391.00 - $ 391.00
    $ 391.00

    Foster 4504, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Brass/Steel

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4504 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

    View full details
    $ 489.00
    $ 489.00 - $ 489.00
    $ 489.00
    $ 391.00
    $ 391.00 - $ 391.00
    $ 391.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 515.00
    $ 515.00 - $ 515.00
    $ 515.00
    $ 412.00
    $ 412.00 - $ 412.00
    $ 412.00

    Foster 4304W, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Water, Brass/SS

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4304W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...

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    $ 515.00
    $ 515.00 - $ 515.00
    $ 515.00
    $ 412.00
    $ 412.00 - $ 412.00
    $ 412.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 878.00
    $ 878.00 - $ 878.00
    $ 878.00
    $ 702.00
    $ 702.00 - $ 702.00
    $ 702.00

    Foster BL4304S/S, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Ball Lock, 303 Stainless

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4304S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Ser...

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    $ 878.00
    $ 878.00 - $ 878.00
    $ 878.00
    $ 702.00
    $ 702.00 - $ 702.00
    $ 702.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 862.00
    $ 862.00 - $ 862.00
    $ 862.00
    $ 689.00
    $ 689.00 - $ 689.00
    $ 689.00

    Foster 4304S/S, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, 303 Stainless

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4304S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Serie...

    View full details
    $ 862.00
    $ 862.00 - $ 862.00
    $ 862.00
    $ 689.00
    $ 689.00 - $ 689.00
    $ 689.00
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 527.00
    $ 527.00 - $ 527.00
    $ 527.00
    $ 421.00
    $ 421.00 - $ 421.00
    $ 421.00

    Foster 4304S, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve

    In stock

    Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4304S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...

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    $ 527.00
    $ 527.00 - $ 527.00
    $ 527.00
    $ 421.00
    $ 421.00 - $ 421.00
    $ 421.00
    Save 20% Save %