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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.

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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 607.00
$ 607.00 - $ 607.00
$ 607.00
$ 486.00
$ 486.00 - $ 486.00
$ 486.00

Foster 1814W, 3/8" Industrial Coupler x 1/2" Push-On Hose Stem, 4 Series, Water, Brass/SS

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 1814W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...

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$ 607.00
$ 607.00 - $ 607.00
$ 607.00
$ 486.00
$ 486.00 - $ 486.00
$ 486.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 510.00
$ 510.00 - $ 510.00
$ 510.00
$ 408.00
$ 408.00 - $ 408.00
$ 408.00

Foster BL1814, 3/8" Industrial Coupler x 1/2" Push-On Hose Stem, 4 Series, Ball Lock, Brass/Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL1814 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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$ 510.00
$ 510.00 - $ 510.00
$ 510.00
$ 408.00
$ 408.00 - $ 408.00
$ 408.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 484.00
$ 484.00 - $ 484.00
$ 484.00
$ 387.00
$ 387.00 - $ 387.00
$ 387.00

Foster 1814, 3/8" Industrial Coupler x 1/2" Push-On Hose Stem, 4 Series, Brass/Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 1814 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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$ 484.00
$ 484.00 - $ 484.00
$ 484.00
$ 387.00
$ 387.00 - $ 387.00
$ 387.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 575.00
$ 575.00 - $ 575.00
$ 575.00
$ 459.00
$ 459.00 - $ 459.00
$ 459.00

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

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

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$ 575.00
$ 575.00 - $ 575.00
$ 575.00
$ 459.00
$ 459.00 - $ 459.00
$ 459.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 477.00
$ 477.00 - $ 477.00
$ 477.00
$ 382.00
$ 382.00 - $ 382.00
$ 382.00

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

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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$ 477.00
$ 477.00 - $ 477.00
$ 477.00
$ 382.00
$ 382.00 - $ 382.00
$ 382.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 440.00
$ 440.00 - $ 440.00
$ 440.00
$ 352.00
$ 352.00 - $ 352.00
$ 352.00

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

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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$ 440.00
$ 440.00 - $ 440.00
$ 440.00
$ 352.00
$ 352.00 - $ 352.00
$ 352.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 588.00
$ 588.00 - $ 588.00
$ 588.00
$ 471.00
$ 471.00 - $ 471.00
$ 471.00

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

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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$ 588.00
$ 588.00 - $ 588.00
$ 588.00
$ 471.00
$ 471.00 - $ 471.00
$ 471.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 598.00
$ 598.00 - $ 598.00
$ 598.00
$ 479.00
$ 479.00 - $ 479.00
$ 479.00

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

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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$ 598.00
$ 598.00 - $ 598.00
$ 598.00
$ 479.00
$ 479.00 - $ 479.00
$ 479.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 482.00
$ 482.00 - $ 482.00
$ 482.00
$ 385.00
$ 385.00 - $ 385.00
$ 385.00

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

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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$ 482.00
$ 482.00 - $ 482.00
$ 482.00
$ 385.00
$ 385.00 - $ 385.00
$ 385.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 570.00
$ 570.00 - $ 570.00
$ 570.00
$ 456.00
$ 456.00 - $ 456.00
$ 456.00

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

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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$ 570.00
$ 570.00 - $ 570.00
$ 570.00
$ 456.00
$ 456.00 - $ 456.00
$ 456.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 607.00
$ 607.00 - $ 607.00
$ 607.00
$ 486.00
$ 486.00 - $ 486.00
$ 486.00

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

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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$ 607.00
$ 607.00 - $ 607.00
$ 607.00
$ 486.00
$ 486.00 - $ 486.00
$ 486.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 881.00
$ 881.00 - $ 881.00
$ 881.00
$ 704.00
$ 704.00 - $ 704.00
$ 704.00

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

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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$ 881.00
$ 881.00 - $ 881.00
$ 881.00
$ 704.00
$ 704.00 - $ 704.00
$ 704.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 591.00
$ 591.00 - $ 591.00
$ 591.00
$ 473.00
$ 473.00 - $ 473.00
$ 473.00

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

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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$ 591.00
$ 591.00 - $ 591.00
$ 591.00
$ 473.00
$ 473.00 - $ 473.00
$ 473.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 496.00
$ 496.00 - $ 496.00
$ 496.00
$ 398.00
$ 398.00 - $ 398.00
$ 398.00

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

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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$ 496.00
$ 496.00 - $ 496.00
$ 496.00
$ 398.00
$ 398.00 - $ 398.00
$ 398.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 580.00
$ 580.00 - $ 580.00
$ 580.00
$ 464.00
$ 464.00 - $ 464.00
$ 464.00

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

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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$ 580.00
$ 580.00 - $ 580.00
$ 580.00
$ 464.00
$ 464.00 - $ 464.00
$ 464.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 507.00
$ 507.00 - $ 507.00
$ 507.00
$ 405.00
$ 405.00 - $ 405.00
$ 405.00

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

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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$ 507.00
$ 507.00 - $ 507.00
$ 507.00
$ 405.00
$ 405.00 - $ 405.00
$ 405.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 570.00
$ 570.00 - $ 570.00
$ 570.00
$ 457.00
$ 457.00 - $ 457.00
$ 457.00

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

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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$ 570.00
$ 570.00 - $ 570.00
$ 570.00
$ 457.00
$ 457.00 - $ 457.00
$ 457.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 573.00
$ 573.00 - $ 573.00
$ 573.00
$ 459.00
$ 459.00 - $ 459.00
$ 459.00

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

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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$ 573.00
$ 573.00 - $ 573.00
$ 573.00
$ 459.00
$ 459.00 - $ 459.00
$ 459.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 482.00
$ 482.00 - $ 482.00
$ 482.00
$ 385.00
$ 385.00 - $ 385.00
$ 385.00

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

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...

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$ 482.00
$ 482.00 - $ 482.00
$ 482.00
$ 385.00
$ 385.00 - $ 385.00
$ 385.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 588.00
$ 588.00 - $ 588.00
$ 588.00
$ 471.00
$ 471.00 - $ 471.00
$ 471.00

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

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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$ 588.00
$ 588.00 - $ 588.00
$ 588.00
$ 471.00
$ 471.00 - $ 471.00
$ 471.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 580.00
$ 580.00 - $ 580.00
$ 580.00
$ 464.00
$ 464.00 - $ 464.00
$ 464.00

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

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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$ 580.00
$ 580.00 - $ 580.00
$ 580.00
$ 464.00
$ 464.00 - $ 464.00
$ 464.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 580.00
$ 580.00 - $ 580.00
$ 580.00
$ 464.00
$ 464.00 - $ 464.00
$ 464.00

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

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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$ 580.00
$ 580.00 - $ 580.00
$ 580.00
$ 464.00
$ 464.00 - $ 464.00
$ 464.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 584.00
$ 584.00 - $ 584.00
$ 584.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00

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

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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$ 584.00
$ 584.00 - $ 584.00
$ 584.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 493.00
$ 493.00 - $ 493.00
$ 493.00
$ 394.00
$ 394.00 - $ 394.00
$ 394.00

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

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...

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$ 493.00
$ 493.00 - $ 493.00
$ 493.00
$ 394.00
$ 394.00 - $ 394.00
$ 394.00
Save 20% Save %

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