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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 %
$ 16.49
$ 16.49 - $ 16.49
$ 16.49
$ 13.19
$ 13.19 - $ 13.19
$ 13.19

Foster 3203H, 1/4" Industrial Coupler x 3/8" Female NPT, 3 Series, Heat/Viton, Steel

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

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$ 16.49
$ 16.49 - $ 16.49
$ 16.49
$ 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 %
$ 17.19
$ 17.19 - $ 17.19
$ 17.19
$ 13.69
$ 13.69 - $ 13.69
$ 13.69

Foster BL3203, 1/4" Industrial Coupler x 3/8" Female NPT, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3203 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 17.19
$ 17.19 - $ 17.19
$ 17.19
$ 13.69
$ 13.69 - $ 13.69
$ 13.69
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 %
$ 15.19
$ 15.19 - $ 15.19
$ 15.19
$ 12.19
$ 12.19 - $ 12.19
$ 12.19

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

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

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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 %
$ 23.39
$ 23.39 - $ 23.39
$ 23.39
$ 18.69
$ 18.69 - $ 18.69
$ 18.69

Foster BL3003W, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Ball Lock, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3003W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — t...

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$ 23.39
$ 23.39 - $ 23.39
$ 23.39
$ 18.69
$ 18.69 - $ 18.69
$ 18.69
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 %
$ 19.19
$ 19.19 - $ 19.19
$ 19.19
$ 15.29
$ 15.29 - $ 15.29
$ 15.29

Foster 3003W, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3003W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 19.19
$ 19.19 - $ 19.19
$ 19.19
$ 15.29
$ 15.29 - $ 15.29
$ 15.29
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 %
$ 47.39
$ 47.39 - $ 47.39
$ 47.39
$ 37.89
$ 37.89 - $ 37.89
$ 37.89

Foster 3003S/SH, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Heat/Viton, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3003S/SH is a 303 Stainless 1/4" industrial coupler from the Foster 3 Seri...

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$ 47.39
$ 47.39 - $ 47.39
$ 47.39
$ 37.89
$ 37.89 - $ 37.89
$ 37.89
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 %
$ 49.89
$ 49.89 - $ 49.89
$ 49.89
$ 39.89
$ 39.89 - $ 39.89
$ 39.89

Foster BL3003S/S, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Ball Lock, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3003S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Ser...

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$ 49.89
$ 49.89 - $ 49.89
$ 49.89
$ 39.89
$ 39.89 - $ 39.89
$ 39.89
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 %
$ 44.29
$ 44.29 - $ 44.29
$ 44.29
$ 35.39
$ 35.39 - $ 35.39
$ 35.39

Foster 3003S/S, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3003S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Serie...

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$ 44.29
$ 44.29 - $ 44.29
$ 44.29
$ 35.39
$ 35.39 - $ 35.39
$ 35.39
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 %
$ 18.99
$ 18.99 - $ 18.99
$ 18.99
$ 15.19
$ 15.19 - $ 15.19
$ 15.19

Foster 3003S, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Steam/EPDM, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3003S 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 %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 14.09
$ 14.09 - $ 14.09
$ 14.09
$ 11.29
$ 11.29 - $ 11.29
$ 11.29

Foster 3003LV, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Less Valve, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3003LV is a Steel 1/4" industrial coupler from the Foster 3 Series — the m...

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$ 14.09
$ 14.09 - $ 14.09
$ 14.09
$ 11.29
$ 11.29 - $ 11.29
$ 11.29
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 %
$ 19.89
$ 19.89 - $ 19.89
$ 19.89
$ 15.89
$ 15.89 - $ 15.89
$ 15.89

Foster 3003HW, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Hot Water/Viton, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3003HW is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — th...

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$ 19.89
$ 19.89 - $ 19.89
$ 19.89
$ 15.89
$ 15.89 - $ 15.89
$ 15.89
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 %
$ 16.69
$ 16.69 - $ 16.69
$ 16.69
$ 13.29
$ 13.29 - $ 13.29
$ 13.29

Foster 3003H, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Heat/Viton, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3003H is a Steel 1/4" industrial coupler from the Foster 3 Series — the mo...

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$ 16.69
$ 16.69 - $ 16.69
$ 16.69
$ 13.29
$ 13.29 - $ 13.29
$ 13.29
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 %
$ 15.89
$ 15.89 - $ 15.89
$ 15.89
$ 12.69
$ 12.69 - $ 12.69
$ 12.69

Foster 3003D, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Dill Valve, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3003D is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — ...

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$ 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 %
$ 17.89
$ 17.89 - $ 17.89
$ 17.89
$ 14.29
$ 14.29 - $ 14.29
$ 14.29

Foster BL3003, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3003 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

View full details
$ 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 %
$ 14.99
$ 14.99 - $ 14.99
$ 14.99
$ 11.99
$ 11.99 - $ 11.99
$ 11.99

Foster 3003, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3003 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 14.99
$ 14.99 - $ 14.99
$ 14.99
$ 11.99
$ 11.99 - $ 11.99
$ 11.99
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 %
$ 23.19
$ 23.19 - $ 23.19
$ 23.19
$ 18.59
$ 18.59 - $ 18.59
$ 18.59

Foster 2803W, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 2803W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 23.19
$ 23.19 - $ 23.19
$ 23.19
$ 18.59
$ 18.59 - $ 18.59
$ 18.59
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 %
$ 59.59
$ 59.59 - $ 59.59
$ 59.59
$ 47.69
$ 47.69 - $ 47.69
$ 47.69

Foster 2803S/S, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 2803S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Serie...

View full details
$ 59.59
$ 59.59 - $ 59.59
$ 59.59
$ 47.69
$ 47.69 - $ 47.69
$ 47.69
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 %
$ 23.59
$ 23.59 - $ 23.59
$ 23.59
$ 18.89
$ 18.89 - $ 18.89
$ 18.89

Foster 2803S, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Steam/EPDM, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 2803S is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

View full details
$ 23.59
$ 23.59 - $ 23.59
$ 23.59
$ 18.89
$ 18.89 - $ 18.89
$ 18.89
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 %
$ 22.19
$ 22.19 - $ 22.19
$ 22.19
$ 17.79
$ 17.79 - $ 17.79
$ 17.79

Foster 2803H, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Heat/Viton, Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 2803H is a Steel 1/4" industrial coupler from the Foster 3 Series — the mo...

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$ 22.19
$ 22.19 - $ 22.19
$ 22.19
$ 17.79
$ 17.79 - $ 17.79
$ 17.79
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 %
$ 19.49
$ 19.49 - $ 19.49
$ 19.49
$ 15.59
$ 15.59 - $ 15.59
$ 15.59

Foster BL2803, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL2803 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 19.49
$ 19.49 - $ 19.49
$ 19.49
$ 15.59
$ 15.59 - $ 15.59
$ 15.59
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 %
$ 19.19
$ 19.19 - $ 19.19
$ 19.19
$ 15.29
$ 15.29 - $ 15.29
$ 15.29

Foster 2803, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 2803 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — t...

View full details
$ 19.19
$ 19.19 - $ 19.19
$ 19.19
$ 15.29
$ 15.29 - $ 15.29
$ 15.29
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 %
$ 29.69
$ 29.69 - $ 29.69
$ 29.69
$ 23.79
$ 23.79 - $ 23.79
$ 23.79

Foster 66S-6, 3/4" Industrial Plug x 3/4" Male NPT, 6 Series, Free Swivel, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 66S-6 is a Brass/Steel 3/4" industrial plug from the Foster 6 Se...

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$ 29.69
$ 29.69 - $ 29.69
$ 29.69
$ 23.79
$ 23.79 - $ 23.79
$ 23.79
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 %
$ 26.49
$ 26.49 - $ 26.49
$ 26.49
$ 21.19
$ 21.19 - $ 21.19
$ 21.19

Foster 72-6, 3/4" Industrial Plug x 1" Hose ID, 6 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 72-6 is a Steel 3/4" industrial plug from the Foster 6 Series — ...

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$ 26.49
$ 26.49 - $ 26.49
$ 26.49
$ 21.19
$ 21.19 - $ 21.19
$ 21.19
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 %
$ 19.99
$ 19.99 - $ 19.99
$ 19.99
$ 15.99
$ 15.99 - $ 15.99
$ 15.99

Foster 71-6, 3/4" Industrial Plug x 3/4" Hose ID, 6 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 71-6 is a Steel 3/4" industrial plug from the Foster 6 Series — ...

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$ 19.99
$ 19.99 - $ 19.99
$ 19.99
$ 15.99
$ 15.99 - $ 15.99
$ 15.99
Save 20% Save %

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