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Foster

Foster quick couplers set the standard in pneumatic and hydraulic connections. Part of the ZSI-Foster line, Foster couplers and plugs cover the full range of industrial interchanges and body sizes in steel, brass, and stainless construction. Built for reliable, repeatable connections in air and fluid systems. Shop the full Foster range below.

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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 %
$ 56.49
$ 56.49 - $ 56.49
$ 56.49
$ 45.19
$ 45.19 - $ 45.19
$ 45.19

Foster 5305S/S, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, 303 Stainless

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5305S/S is a 303 Stainless 1/2" industrial coupler from the Fost...

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$ 56.49
$ 56.49 - $ 56.49
$ 56.49
$ 45.19
$ 45.19 - $ 45.19
$ 45.19
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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 %
$ 32.99
$ 32.99 - $ 32.99
$ 32.99
$ 26.39
$ 26.39 - $ 26.39
$ 26.39

Foster 5305H, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5305H is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 32.99
$ 32.99 - $ 32.99
$ 32.99
$ 26.39
$ 26.39 - $ 26.39
$ 26.39
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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 %
$ 36.39
$ 36.39 - $ 36.39
$ 36.39
$ 29.09
$ 29.09 - $ 29.09
$ 29.09

Foster BL5305, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5305 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 36.39
$ 36.39 - $ 36.39
$ 36.39
$ 29.09
$ 29.09 - $ 29.09
$ 29.09
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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 %
$ 30.89
$ 30.89 - $ 30.89
$ 30.89
$ 24.69
$ 24.69 - $ 24.69
$ 24.69

Foster 5305, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5305 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 30.89
$ 30.89 - $ 30.89
$ 30.89
$ 24.69
$ 24.69 - $ 24.69
$ 24.69
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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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$ 35.99
$ 35.99 - $ 35.99
$ 35.99
$ 28.79
$ 28.79 - $ 28.79
$ 28.79

Foster BL5105, 1/2" Industrial Coupler x 3/8" Male NPT, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5105 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 35.99
$ 35.99 - $ 35.99
$ 35.99
$ 28.79
$ 28.79 - $ 28.79
$ 28.79
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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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$ 31.69
$ 31.69 - $ 31.69
$ 31.69
$ 25.29
$ 25.29 - $ 25.29
$ 25.29

Foster 5105, 1/2" Industrial Coupler x 3/8" Male NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5105 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 31.69
$ 31.69 - $ 31.69
$ 31.69
$ 25.29
$ 25.29 - $ 25.29
$ 25.29
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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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$ 39.69
$ 39.69 - $ 39.69
$ 39.69
$ 31.69
$ 31.69 - $ 31.69
$ 31.69

Foster BL4905, 1/2" Industrial Coupler x 1/4" Male NPT, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL4905 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 39.69
$ 39.69 - $ 39.69
$ 39.69
$ 31.69
$ 31.69 - $ 31.69
$ 31.69
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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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$ 34.09
$ 34.09 - $ 34.09
$ 34.09
$ 27.29
$ 27.29 - $ 27.29
$ 27.29

Foster 4905, 1/2" Industrial Coupler x 1/4" Male NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 4905 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 34.09
$ 34.09 - $ 34.09
$ 34.09
$ 27.29
$ 27.29 - $ 27.29
$ 27.29
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 %
$ 37.69
$ 37.69 - $ 37.69
$ 37.69
$ 30.19
$ 30.19 - $ 30.19
$ 30.19

Foster 5405W, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5405W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 37.69
$ 37.69 - $ 37.69
$ 37.69
$ 30.19
$ 30.19 - $ 30.19
$ 30.19
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 %
$ 36.79
$ 36.79 - $ 36.79
$ 36.79
$ 29.39
$ 29.39 - $ 29.39
$ 29.39

Foster BL5405, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5405 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 36.79
$ 36.79 - $ 36.79
$ 36.79
$ 29.39
$ 29.39 - $ 29.39
$ 29.39
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 %
$ 37.29
$ 37.29 - $ 37.29
$ 37.29
$ 29.79
$ 29.79 - $ 29.79
$ 29.79

Foster 5205W, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5205W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 37.29
$ 37.29 - $ 37.29
$ 37.29
$ 29.79
$ 29.79 - $ 29.79
$ 29.79
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 %
$ 57.99
$ 57.99 - $ 57.99
$ 57.99
$ 46.39
$ 46.39 - $ 46.39
$ 46.39

Foster 5205S/S, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, 303 Stainless

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5205S/S is a 303 Stainless 1/2" industrial coupler from the Fost...

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$ 57.99
$ 57.99 - $ 57.99
$ 57.99
$ 46.39
$ 46.39 - $ 46.39
$ 46.39
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 %
$ 29.09
$ 29.09 - $ 29.09
$ 29.09
$ 23.29
$ 23.29 - $ 23.29
$ 23.29

Foster 5205LV, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Less Valve, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5205LV is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 29.09
$ 29.09 - $ 29.09
$ 29.09
$ 23.29
$ 23.29 - $ 23.29
$ 23.29
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 %
$ 32.99
$ 32.99 - $ 32.99
$ 32.99
$ 26.39
$ 26.39 - $ 26.39
$ 26.39

Foster 5205H, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5205H is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 32.99
$ 32.99 - $ 32.99
$ 32.99
$ 26.39
$ 26.39 - $ 26.39
$ 26.39
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 %
$ 36.39
$ 36.39 - $ 36.39
$ 36.39
$ 29.09
$ 29.09 - $ 29.09
$ 29.09

Foster BL5205, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5205 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 36.39
$ 36.39 - $ 36.39
$ 36.39
$ 29.09
$ 29.09 - $ 29.09
$ 29.09
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 %
$ 30.49
$ 30.49 - $ 30.49
$ 30.49
$ 24.39
$ 24.39 - $ 24.39
$ 24.39

Foster 5205, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5205 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 30.49
$ 30.49 - $ 30.49
$ 30.49
$ 24.39
$ 24.39 - $ 24.39
$ 24.39
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 %
$ 38.29
$ 38.29 - $ 38.29
$ 38.29
$ 30.59
$ 30.59 - $ 30.59
$ 30.59

Foster 5005W, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5005W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 38.29
$ 38.29 - $ 38.29
$ 38.29
$ 30.59
$ 30.59 - $ 30.59
$ 30.59
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 %
$ 32.59
$ 32.59 - $ 32.59
$ 32.59
$ 26.09
$ 26.09 - $ 26.09
$ 26.09

Foster 5005H, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5005H is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 32.59
$ 32.59 - $ 32.59
$ 32.59
$ 26.09
$ 26.09 - $ 26.09
$ 26.09
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 %
$ 35.99
$ 35.99 - $ 35.99
$ 35.99
$ 28.79
$ 28.79 - $ 28.79
$ 28.79

Foster BL5005, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5005 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 35.99
$ 35.99 - $ 35.99
$ 35.99
$ 28.79
$ 28.79 - $ 28.79
$ 28.79
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 %
$ 31.69
$ 31.69 - $ 31.69
$ 31.69
$ 25.29
$ 25.29 - $ 25.29
$ 25.29

Foster 5005, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5005 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 31.69
$ 31.69 - $ 31.69
$ 31.69
$ 25.29
$ 25.29 - $ 25.29
$ 25.29
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 %
$ 39.69
$ 39.69 - $ 39.69
$ 39.69
$ 31.69
$ 31.69 - $ 31.69
$ 31.69

Foster BL4015, 1/2" Industrial Coupler x 1/4" Female NPT, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL4015 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 39.69
$ 39.69 - $ 39.69
$ 39.69
$ 31.69
$ 31.69 - $ 31.69
$ 31.69
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 %
$ 34.09
$ 34.09 - $ 34.09
$ 34.09
$ 27.29
$ 27.29 - $ 27.29
$ 27.29

Foster 4015, 1/2" Industrial Coupler x 1/4" Female NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 4015 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 34.09
$ 34.09 - $ 34.09
$ 34.09
$ 27.29
$ 27.29 - $ 27.29
$ 27.29
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 %
$ 20.39
$ 20.39 - $ 20.39
$ 20.39
$ 16.29
$ 16.29 - $ 16.29
$ 16.29

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

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster PD13-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-f...

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$ 20.39
$ 20.39 - $ 20.39
$ 20.39
$ 16.29
$ 16.29 - $ 16.29
$ 16.29
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 %
$ 15.69
$ 15.69 - $ 15.69
$ 15.69
$ 12.59
$ 12.59 - $ 12.59
$ 12.59

Foster PD11-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 3/4" OD, 4 Series, Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster PD11-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-f...

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$ 15.69
$ 15.69 - $ 15.69
$ 15.69
$ 12.59
$ 12.59 - $ 12.59
$ 12.59
Save 20% Save %

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