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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 %
$ 27.99
$ 27.99 - $ 27.99
$ 27.99
$ 22.39
$ 22.39 - $ 22.39
$ 22.39

Foster 4404, 3/8" Industrial Coupler x 1/2" Female NPT, 4 Series, Brass/Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4404 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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$ 27.99
$ 27.99 - $ 27.99
$ 27.99
$ 22.39
$ 22.39 - $ 22.39
$ 22.39
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 %
$ 29.49
$ 29.49 - $ 29.49
$ 29.49
$ 23.59
$ 23.59 - $ 23.59
$ 23.59

Foster 4204W, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Water, Brass/SS

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...

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$ 29.49
$ 29.49 - $ 29.49
$ 29.49
$ 23.59
$ 23.59 - $ 23.59
$ 23.59
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 %
$ 51.89
$ 51.89 - $ 51.89
$ 51.89
$ 41.49
$ 41.49 - $ 41.49
$ 41.49

Foster BL4204S/S, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Ball Lock, 303 Stainless

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4204S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Ser...

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$ 51.89
$ 51.89 - $ 51.89
$ 51.89
$ 41.49
$ 41.49 - $ 41.49
$ 41.49
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 %
$ 48.89
$ 48.89 - $ 48.89
$ 48.89
$ 39.09
$ 39.09 - $ 39.09
$ 39.09

Foster 4204S/S, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, 303 Stainless

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Serie...

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$ 48.89
$ 48.89 - $ 48.89
$ 48.89
$ 39.09
$ 39.09 - $ 39.09
$ 39.09
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 %
$ 30.19
$ 30.19 - $ 30.19
$ 30.19
$ 24.09
$ 24.09 - $ 24.09
$ 24.09

Foster 4204S, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...

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$ 30.19
$ 30.19 - $ 30.19
$ 30.19
$ 24.09
$ 24.09 - $ 24.09
$ 24.09
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 %
$ 29.09
$ 29.09 - $ 29.09
$ 29.09
$ 23.29
$ 23.29 - $ 23.29
$ 23.29

Foster 4204H, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204H is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — ...

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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 %
$ 28.89
$ 28.89 - $ 28.89
$ 28.89
$ 23.09
$ 23.09 - $ 23.09
$ 23.09

Foster BL4204, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Ball Lock, Brass/Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4204 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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$ 28.89
$ 28.89 - $ 28.89
$ 28.89
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
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 %
$ 24.19
$ 24.19 - $ 24.19
$ 24.19
$ 19.39
$ 19.39 - $ 19.39
$ 19.39

Foster 4204, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Brass/Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4204 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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$ 24.19
$ 24.19 - $ 24.19
$ 24.19
$ 19.39
$ 19.39 - $ 19.39
$ 19.39
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 %
$ 28.09
$ 28.09 - $ 28.09
$ 28.09
$ 22.49
$ 22.49 - $ 22.49
$ 22.49

Foster BL4004, 3/8" Industrial Coupler x 1/4" Female NPT, 4 Series, Ball Lock, Brass/Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4004 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...

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$ 28.09
$ 28.09 - $ 28.09
$ 28.09
$ 22.49
$ 22.49 - $ 22.49
$ 22.49
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 %
$ 23.39
$ 23.39 - $ 23.39
$ 23.39
$ 18.79
$ 18.79 - $ 18.79
$ 18.79

Foster 4004, 3/8" Industrial Coupler x 1/4" Female NPT, 4 Series, Brass/Steel

Reliable, leak-free 3/8" connections for air and fluid lines. The Foster 4004 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...

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$ 23.39
$ 23.39 - $ 23.39
$ 23.39
$ 18.79
$ 18.79 - $ 18.79
$ 18.79
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 %
$ 10.89
$ 10.89 - $ 10.89
$ 10.89
$ 8.69
$ 8.69 - $ 8.69
$ 8.69

Foster PJ8-2S/S, 1/8" 2 Series Plug x 1/4" Tube, 303 Stainless

Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2S/S is a 303 Stainless 1/8" plug from the proven Foster 2 Series —...

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$ 10.89
$ 10.89 - $ 10.89
$ 10.89
$ 8.69
$ 8.69 - $ 8.69
$ 8.69
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 %
$ 11.79
$ 11.79 - $ 11.79
$ 11.79
$ 9.39
$ 9.39 - $ 9.39
$ 9.39

Foster PJ8-2VM, 1/8" 2 Series Plug x 1/4" Soft Metal Tube, Brass Valve Core, Brass

Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2VM is a Brass 1/8" plug from the proven Foster 2 Series — a miniat...

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$ 11.79
$ 11.79 - $ 11.79
$ 11.79
$ 9.39
$ 9.39 - $ 9.39
$ 9.39
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 %
$ 9.79
$ 9.79 - $ 9.79
$ 9.79
$ 7.79
$ 7.79 - $ 7.79
$ 7.79

Foster PJ8-2M, 1/8" 2 Series Plug x 1/4" Soft Metal Tube, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2M is a Steel 1/8" plug from the proven Foster 2 Series — a miniatu...

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$ 9.79
$ 9.79 - $ 9.79
$ 9.79
$ 7.79
$ 7.79 - $ 7.79
$ 7.79
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 %
$ 10.59
$ 10.59 - $ 10.59
$ 10.59
$ 8.49
$ 8.49 - $ 8.49
$ 8.49

Foster PJ8-2VLV, 1/8" 2 Series Plug x 1/4" Plastic Tube, Less Valve, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2VLV is a Steel 1/8" plug from the proven Foster 2 Series — a minia...

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$ 10.59
$ 10.59 - $ 10.59
$ 10.59
$ 8.49
$ 8.49 - $ 8.49
$ 8.49
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 %
$ 29.59
$ 29.59 - $ 29.59
$ 29.59
$ 23.69
$ 23.69 - $ 23.69
$ 23.69

Foster PJ8-2V, 1/8" 2 Series Plug x 1/4" Plastic Tube, Brass Valve Core, Brass

Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2V is a Brass 1/8" plug from the proven Foster 2 Series — a miniatu...

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$ 29.59
$ 29.59 - $ 29.59
$ 29.59
$ 23.69
$ 23.69 - $ 23.69
$ 23.69
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 %
$ 10.09
$ 10.09 - $ 10.09
$ 10.09
$ 8.09
$ 8.09 - $ 8.09
$ 8.09

Foster PJ8-2, 1/8" 2 Series Plug x 1/4" Plastic Tube, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster PJ8-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniatur...

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$ 10.09
$ 10.09 - $ 10.09
$ 10.09
$ 8.09
$ 8.09 - $ 8.09
$ 8.09
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 %
$ 8.09
$ 8.09 - $ 8.09
$ 8.09
$ 6.49
$ 6.49 - $ 6.49
$ 6.49

Foster 04-2, 1/8" 2 Series Plug x 1/4" Hose ID, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster 04-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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$ 8.09
$ 8.09 - $ 8.09
$ 8.09
$ 6.49
$ 6.49 - $ 6.49
$ 6.49
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 4.19
$ 4.19 - $ 4.19
$ 4.19
$ 3.29
$ 3.29 - $ 3.29
$ 3.29

Foster 03-2, 1/8" 2 Series Plug x 3/16" Hose ID, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster 03-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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$ 4.19
$ 4.19 - $ 4.19
$ 4.19
$ 3.29
$ 3.29 - $ 3.29
$ 3.29
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 5.39
$ 5.39 - $ 5.39
$ 5.39
$ 4.29
$ 4.29 - $ 4.29
$ 4.29

Foster 27-2, 1/8" 2 Series Plug x 1/4" Female NPT, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster 27-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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$ 5.39
$ 5.39 - $ 5.39
$ 5.39
$ 4.29
$ 4.29 - $ 4.29
$ 4.29
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 3.09
$ 3.09 - $ 3.09
$ 3.09
$ 2.49
$ 2.49 - $ 2.49
$ 2.49

Foster 23-2, 1/8" 2 Series Plug x 1/8" Female NPT, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster 23-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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$ 3.09
$ 3.09 - $ 3.09
$ 3.09
$ 2.49
$ 2.49 - $ 2.49
$ 2.49
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 4.29
$ 4.29 - $ 4.29
$ 4.29
$ 3.39
$ 3.39 - $ 3.39
$ 3.39

Foster 24-2, 1/8" 2 Series Plug x 1/4" Male NPT, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster 24-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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$ 4.29
$ 4.29 - $ 4.29
$ 4.29
$ 3.39
$ 3.39 - $ 3.39
$ 3.39
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 6.09
$ 6.09 - $ 6.09
$ 6.09
$ 4.89
$ 4.89 - $ 4.89
$ 4.89

Foster 22-2S/S, 1/8" 2 Series Plug x 1/8" Male NPT, 303 Stainless

Dependable, leak-free connections for air and light fluid lines. The Foster 22-2S/S is a 303 Stainless 1/8" plug from the proven Foster 2 Series — ...

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$ 6.09
$ 6.09 - $ 6.09
$ 6.09
$ 4.89
$ 4.89 - $ 4.89
$ 4.89
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 4.29
$ 4.29 - $ 4.29
$ 4.29
$ 3.39
$ 3.39 - $ 3.39
$ 3.39

Foster 22-2B, 1/8" 2 Series Plug x 1/8" Male NPT, Brass

Dependable, leak-free connections for air and light fluid lines. The Foster 22-2B is a Brass 1/8" plug from the proven Foster 2 Series — a miniatur...

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$ 4.29
$ 4.29 - $ 4.29
$ 4.29
$ 3.39
$ 3.39 - $ 3.39
$ 3.39
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 2.59
$ 2.59 - $ 2.59
$ 2.59
$ 2.09
$ 2.09 - $ 2.09
$ 2.09

Foster 22-2, 1/8" 2 Series Plug x 1/8" Male NPT, Steel

Dependable, leak-free connections for air and light fluid lines. The Foster 22-2 is a Steel 1/8" plug from the proven Foster 2 Series — a miniature...

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$ 2.59
$ 2.59 - $ 2.59
$ 2.59
$ 2.09
$ 2.09 - $ 2.09
$ 2.09
Save 19% Save %

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