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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 %
$ 39.39
$ 39.39 - $ 39.39
$ 39.39
$ 31.49
$ 31.49 - $ 31.49
$ 31.49

Foster BL5905, 1/2" Industrial Coupler x 3/4" Hose ID, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5905 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 39.39
$ 39.39 - $ 39.39
$ 39.39
$ 31.49
$ 31.49 - $ 31.49
$ 31.49
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 %
$ 40.09
$ 40.09 - $ 40.09
$ 40.09
$ 32.09
$ 32.09 - $ 32.09
$ 32.09

Foster 5805W, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5805W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 40.09
$ 40.09 - $ 40.09
$ 40.09
$ 32.09
$ 32.09 - $ 32.09
$ 32.09
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 %
$ 41.69
$ 41.69 - $ 41.69
$ 41.69
$ 33.39
$ 33.39 - $ 33.39
$ 33.39

Foster 5805HW, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Hot Water/Viton, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5805HW is a Brass/SS 1/2" industrial coupler from the Foster 5 S...

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$ 41.69
$ 41.69 - $ 41.69
$ 41.69
$ 33.39
$ 33.39 - $ 33.39
$ 33.39
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 %
$ 35.39
$ 35.39 - $ 35.39
$ 35.39
$ 28.29
$ 28.29 - $ 28.29
$ 28.29

Foster 5805H, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5805H is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 35.39
$ 35.39 - $ 35.39
$ 35.39
$ 28.29
$ 28.29 - $ 28.29
$ 28.29
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 %
$ 38.99
$ 38.99 - $ 38.99
$ 38.99
$ 31.19
$ 31.19 - $ 31.19
$ 31.19

Foster BL5805, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5805 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 38.99
$ 38.99 - $ 38.99
$ 38.99
$ 31.19
$ 31.19 - $ 31.19
$ 31.19
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 %
$ 33.69
$ 33.69 - $ 33.69
$ 33.69
$ 26.99
$ 26.99 - $ 26.99
$ 26.99

Foster 5805, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5805 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 33.69
$ 33.69 - $ 33.69
$ 33.69
$ 26.99
$ 26.99 - $ 26.99
$ 26.99
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 %
$ 37.29
$ 37.29 - $ 37.29
$ 37.29
$ 29.89
$ 29.89 - $ 29.89
$ 29.89

Foster 5705H, 1/2" Industrial Coupler x 3/8" Hose ID, 5 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5705H is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 37.29
$ 37.29 - $ 37.29
$ 37.29
$ 29.89
$ 29.89 - $ 29.89
$ 29.89
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 %
$ 38.79
$ 38.79 - $ 38.79
$ 38.79
$ 30.99
$ 30.99 - $ 30.99
$ 30.99

Foster BL5705, 1/2" Industrial Coupler x 3/8" Hose ID, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5705 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 38.79
$ 38.79 - $ 38.79
$ 38.79
$ 30.99
$ 30.99 - $ 30.99
$ 30.99
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 %
$ 33.69
$ 33.69 - $ 33.69
$ 33.69
$ 26.99
$ 26.99 - $ 26.99
$ 26.99

Foster 5705, 1/2" Industrial Coupler x 3/8" Hose ID, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5705 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 33.69
$ 33.69 - $ 33.69
$ 33.69
$ 26.99
$ 26.99 - $ 26.99
$ 26.99
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 %
$ 40.09
$ 40.09 - $ 40.09
$ 40.09
$ 32.09
$ 32.09 - $ 32.09
$ 32.09

Foster BL5605, 1/2" Industrial Coupler x 1/4" Hose ID, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5605 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 40.09
$ 40.09 - $ 40.09
$ 40.09
$ 32.09
$ 32.09 - $ 32.09
$ 32.09
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 %
$ 34.49
$ 34.49 - $ 34.49
$ 34.49
$ 27.59
$ 27.59 - $ 27.59
$ 27.59

Foster 5605, 1/2" Industrial Coupler x 1/4" Hose ID, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5605 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 34.49
$ 34.49 - $ 34.49
$ 34.49
$ 27.59
$ 27.59 - $ 27.59
$ 27.59
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 %
$ 36.09
$ 36.09 - $ 36.09
$ 36.09
$ 28.89
$ 28.89 - $ 28.89
$ 28.89

Foster BL1815, 1/2" Industrial Coupler x 1/2" Push-On Hose Stem, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL1815 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 36.09
$ 36.09 - $ 36.09
$ 36.09
$ 28.89
$ 28.89 - $ 28.89
$ 28.89
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 %
$ 30.79
$ 30.79 - $ 30.79
$ 30.79
$ 24.59
$ 24.59 - $ 24.59
$ 24.59

Foster 1815W, 1/2" Industrial Coupler x 1/2" Push-On Hose Stem, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 1815W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 30.79
$ 30.79 - $ 30.79
$ 30.79
$ 24.59
$ 24.59 - $ 24.59
$ 24.59
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 %
$ 29.79
$ 29.79 - $ 29.79
$ 29.79
$ 23.79
$ 23.79 - $ 23.79
$ 23.79

Foster 1815, 1/2" Industrial Coupler x 1/2" Push-On Hose Stem, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 1815 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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

Foster BL5505, 1/2" Industrial Coupler x 3/4" Male NPT, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL5505 is a Brass/Steel 1/2" industrial coupler from the Foster ...

View full details
$ 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 %
$ 31.69
$ 31.69 - $ 31.69
$ 31.69
$ 25.39
$ 25.39 - $ 25.39
$ 25.39

Foster 5505, 1/2" Industrial Coupler x 3/4" Male NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5505 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

View full details
$ 31.69
$ 31.69 - $ 31.69
$ 31.69
$ 25.39
$ 25.39 - $ 25.39
$ 25.39
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 5305W, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5305W 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 %
$ 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
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 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...

View full details
$ 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 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 ...

View full details
$ 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 %
$ 30.89
$ 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 ...

View full details
$ 30.89
$ 30.89 - $ 30.89
$ 30.89
$ 24.69
$ 24.69 - $ 24.69
$ 24.69
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 %
$ 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
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 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 ...

View full details
$ 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 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 ...

View full details
$ 39.69
$ 39.69 - $ 39.69
$ 39.69
$ 31.69
$ 31.69 - $ 31.69
$ 31.69
Save 20% Save %

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