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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 %
$ 70.79
$ 70.79 - $ 70.79
$ 70.79
$ 56.59
$ 56.59 - $ 56.59
$ 56.59

Foster BL3303S/S, 1/4" Industrial Coupler x 3/8" Male NPT, 3 Series, Ball Lock, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3303S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Ser...

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$ 70.79
$ 70.79 - $ 70.79
$ 70.79
$ 56.59
$ 56.59 - $ 56.59
$ 56.59
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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 %
$ 65.89
$ 65.89 - $ 65.89
$ 65.89
$ 52.69
$ 52.69 - $ 52.69
$ 52.69

Foster 3303S/S, 1/4" Industrial Coupler x 3/8" Male NPT, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3303S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Serie...

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$ 65.89
$ 65.89 - $ 65.89
$ 65.89
$ 52.69
$ 52.69 - $ 52.69
$ 52.69
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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 %
$ 17.09
$ 17.09 - $ 17.09
$ 17.09
$ 13.69
$ 13.69 - $ 13.69
$ 13.69

Foster 3303H, 1/4" Industrial Coupler x 3/8" Male NPT, 3 Series, Heat/Viton, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3303H is a Steel 1/4" industrial coupler from the Foster 3 Series — the mo...

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$ 17.09
$ 17.09 - $ 17.09
$ 17.09
$ 13.69
$ 13.69 - $ 13.69
$ 13.69
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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 %
$ 16.99
$ 16.99 - $ 16.99
$ 16.99
$ 13.59
$ 13.59 - $ 13.59
$ 13.59

Foster BL3303, 1/4" Industrial Coupler x 3/8" Male NPT, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3303 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 16.99
$ 16.99 - $ 16.99
$ 16.99
$ 13.59
$ 13.59 - $ 13.59
$ 13.59
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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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$ 14.99
$ 14.99 - $ 14.99
$ 14.99
$ 11.99
$ 11.99 - $ 11.99
$ 11.99

Foster 3303, 1/4" Industrial Coupler x 3/8" Male NPT, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3303 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — t...

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$ 14.99
$ 14.99 - $ 14.99
$ 14.99
$ 11.99
$ 11.99 - $ 11.99
$ 11.99
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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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$ 21.19
$ 21.19 - $ 21.19
$ 21.19
$ 16.89
$ 16.89 - $ 16.89
$ 16.89

Foster BL3103W, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Ball Lock, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3103W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

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$ 21.19
$ 21.19 - $ 21.19
$ 21.19
$ 16.89
$ 16.89 - $ 16.89
$ 16.89
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 %
$ 17.49
$ 17.49 - $ 17.49
$ 17.49
$ 13.99
$ 13.99 - $ 13.99
$ 13.99

Foster 3103W, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 17.49
$ 17.49 - $ 17.49
$ 17.49
$ 13.99
$ 13.99 - $ 13.99
$ 13.99
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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$ 45.29
$ 45.29 - $ 45.29
$ 45.29
$ 36.29
$ 36.29 - $ 36.29
$ 36.29

Foster 3103S/SLV, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Less Valve, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103S/SLV is a 303 Stainless 1/4" industrial coupler from the Foster 3 Ser...

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$ 45.29
$ 45.29 - $ 45.29
$ 45.29
$ 36.29
$ 36.29 - $ 36.29
$ 36.29
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 %
$ 47.59
$ 47.59 - $ 47.59
$ 47.59
$ 38.09
$ 38.09 - $ 38.09
$ 38.09

Foster 3103S/SH, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Heat/Viton, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103S/SH is a 303 Stainless 1/4" industrial coupler from the Foster 3 Seri...

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$ 47.59
$ 47.59 - $ 47.59
$ 47.59
$ 38.09
$ 38.09 - $ 38.09
$ 38.09
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 %
$ 48.19
$ 48.19 - $ 48.19
$ 48.19
$ 38.49
$ 38.49 - $ 38.49
$ 38.49

Foster BL3103S/S, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Ball Lock, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3103S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Ser...

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$ 48.19
$ 48.19 - $ 48.19
$ 48.19
$ 38.49
$ 38.49 - $ 38.49
$ 38.49
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 %
$ 44.99
$ 44.99 - $ 44.99
$ 44.99
$ 35.99
$ 35.99 - $ 35.99
$ 35.99

Foster 3103S/S, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Serie...

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$ 44.99
$ 44.99 - $ 44.99
$ 44.99
$ 35.99
$ 35.99 - $ 35.99
$ 35.99
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 %
$ 17.29
$ 17.29 - $ 17.29
$ 17.29
$ 13.89
$ 13.89 - $ 13.89
$ 13.89

Foster 3103S, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Steam/EPDM, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103S is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 17.29
$ 17.29 - $ 17.29
$ 17.29
$ 13.89
$ 13.89 - $ 13.89
$ 13.89
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 %
$ 12.89
$ 12.89 - $ 12.89
$ 12.89
$ 10.29
$ 10.29 - $ 10.29
$ 10.29

Foster 3103LV, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Less Valve, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103LV is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 12.89
$ 12.89 - $ 12.89
$ 12.89
$ 10.29
$ 10.29 - $ 10.29
$ 10.29
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 %
$ 15.19
$ 15.19 - $ 15.19
$ 15.19
$ 12.19
$ 12.19 - $ 12.19
$ 12.19

Foster 3103H, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103H is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — ...

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$ 15.19
$ 15.19 - $ 15.19
$ 15.19
$ 12.19
$ 12.19 - $ 12.19
$ 12.19
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 %
$ 13.99
$ 13.99 - $ 13.99
$ 13.99
$ 11.19
$ 11.19 - $ 11.19
$ 11.19

Foster 3103D, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Dill Valve, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103D is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — ...

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$ 13.99
$ 13.99 - $ 13.99
$ 13.99
$ 11.19
$ 11.19 - $ 11.19
$ 11.19
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 %
$ 15.89
$ 15.89 - $ 15.89
$ 15.89
$ 12.69
$ 12.69 - $ 12.69
$ 12.69

Foster BL3103, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3103 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

View full details
$ 15.89
$ 15.89 - $ 15.89
$ 15.89
$ 12.69
$ 12.69 - $ 12.69
$ 12.69
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 %
$ 13.59
$ 13.59 - $ 13.59
$ 13.59
$ 10.89
$ 10.89 - $ 10.89
$ 10.89

Foster 3103, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — t...

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$ 13.59
$ 13.59 - $ 13.59
$ 13.59
$ 10.89
$ 10.89 - $ 10.89
$ 10.89
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 %
$ 77.19
$ 77.19 - $ 77.19
$ 77.19
$ 61.69
$ 61.69 - $ 61.69
$ 61.69

Foster BL2903S/S, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, Ball Lock, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL2903S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Ser...

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$ 77.19
$ 77.19 - $ 77.19
$ 77.19
$ 61.69
$ 61.69 - $ 61.69
$ 61.69
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 %
$ 72.29
$ 72.29 - $ 72.29
$ 72.29
$ 57.79
$ 57.79 - $ 57.79
$ 57.79

Foster 2903S/S, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 2903S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Serie...

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$ 72.29
$ 72.29 - $ 72.29
$ 72.29
$ 57.79
$ 57.79 - $ 57.79
$ 57.79
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 %
$ 19.79
$ 19.79 - $ 19.79
$ 19.79
$ 15.79
$ 15.79 - $ 15.79
$ 15.79

Foster 2903S, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, Steam/EPDM, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 2903S is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 19.79
$ 19.79 - $ 19.79
$ 19.79
$ 15.79
$ 15.79 - $ 15.79
$ 15.79
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 %
$ 18.49
$ 18.49 - $ 18.49
$ 18.49
$ 14.79
$ 14.79 - $ 14.79
$ 14.79

Foster 2903H, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, Heat/Viton, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 2903H is a Steel 1/4" industrial coupler from the Foster 3 Series — the mo...

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$ 18.49
$ 18.49 - $ 18.49
$ 18.49
$ 14.79
$ 14.79 - $ 14.79
$ 14.79
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 %
$ 17.89
$ 17.89 - $ 17.89
$ 17.89
$ 14.29
$ 14.29 - $ 14.29
$ 14.29

Foster BL2903, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL2903 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 17.89
$ 17.89 - $ 17.89
$ 17.89
$ 14.29
$ 14.29 - $ 14.29
$ 14.29
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 %
$ 16.39
$ 16.39 - $ 16.39
$ 16.39
$ 13.19
$ 13.19 - $ 13.19
$ 13.19

Foster 2903, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 2903 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — t...

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$ 16.39
$ 16.39 - $ 16.39
$ 16.39
$ 13.19
$ 13.19 - $ 13.19
$ 13.19
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 %
$ 18.99
$ 18.99 - $ 18.99
$ 18.99
$ 15.19
$ 15.19 - $ 15.19
$ 15.19

Foster 3203W, 1/4" Industrial Coupler x 3/8" Female NPT, 3 Series, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3203W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 18.99
$ 18.99 - $ 18.99
$ 18.99
$ 15.19
$ 15.19 - $ 15.19
$ 15.19
Save 20% Save %

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