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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 %
$ 30.89
$ 30.89 - $ 30.89
$ 30.89
$ 24.69
$ 24.69 - $ 24.69
$ 24.69

Foster BL50FS, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, Ball Lock, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL50FS is a brass 1/2" straight-thru coup...

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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 Save 20% Save %
$ 23.89
$ 23.89 - $ 23.89
$ 23.89
$ 19.09
$ 19.09 - $ 19.09
$ 19.09

Foster BL38FS, 3/8" Straight-Thru Coupler x 3/8" Female NPT, FST Series, Ball Lock, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL38FS is a brass 3/8" straight-thru coup...

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$ 23.89
$ 23.89 - $ 23.89
$ 23.89
$ 19.09
$ 19.09 - $ 19.09
$ 19.09
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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 %
$ 73.49
$ 73.49 - $ 73.49
$ 73.49
$ 58.79
$ 58.79 - $ 58.79
$ 58.79

Foster BL25FSS, 1/4" Straight-Thru Coupler x 1/4" Female NPT, FST Series, Ball Lock, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL25FSS is a 303 stainless 1/4" straight-...

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$ 73.49
$ 73.49 - $ 73.49
$ 73.49
$ 58.79
$ 58.79 - $ 58.79
$ 58.79
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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 %
$ 20.59
$ 20.59 - $ 20.59
$ 20.59
$ 16.49
$ 16.49 - $ 16.49
$ 16.49

Foster BL25FS, 1/4" Straight-Thru Coupler x 1/4" Female NPT, FST Series, Ball Lock, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL25FS is a brass 1/4" straight-thru coup...

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$ 20.59
$ 20.59 - $ 20.59
$ 20.59
$ 16.49
$ 16.49 - $ 16.49
$ 16.49
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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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$ 301.29
$ 301.29 - $ 301.29
$ 301.29
$ 240.99
$ 240.99 - $ 240.99
$ 240.99

Foster BL150FS, 1-1/2" Straight-Thru Coupler x 1-1/2" Female NPT, FST Series, Ball Lock, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL150FS is a brass 1-1/2" straight-thru c...

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$ 301.29
$ 301.29 - $ 301.29
$ 301.29
$ 240.99
$ 240.99 - $ 240.99
$ 240.99
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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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$ 47.79
$ 47.79 - $ 47.79
$ 47.79
$ 38.19
$ 38.19 - $ 38.19
$ 38.19

Foster BL12FSS, 1/8" Straight-Thru Coupler x 1/8" Female NPT, FST Series, Ball Lock, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL12FSS is a 303 stainless 1/8" straight-...

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$ 47.79
$ 47.79 - $ 47.79
$ 47.79
$ 38.19
$ 38.19 - $ 38.19
$ 38.19
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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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$ 18.49
$ 18.49 - $ 18.49
$ 18.49
$ 14.79
$ 14.79 - $ 14.79
$ 14.79

Foster BL12FS, 1/8" Straight-Thru Coupler x 1/8" Female NPT, FST Series, Ball Lock, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL12FS is a brass 1/8" straight-thru coup...

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$ 18.49
$ 18.49 - $ 18.49
$ 18.49
$ 14.79
$ 14.79 - $ 14.79
$ 14.79
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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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$ 173.59
$ 173.59 - $ 173.59
$ 173.59
$ 138.89
$ 138.89 - $ 138.89
$ 138.89

Foster BL125FS, 1-1/4" Straight-Thru Coupler x 1-1/4" Female NPT, FST Series, Ball Lock, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL125FS is a brass 1-1/4" straight-thru c...

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$ 173.59
$ 173.59 - $ 173.59
$ 173.59
$ 138.89
$ 138.89 - $ 138.89
$ 138.89
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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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$ 188.79
$ 188.79 - $ 188.79
$ 188.79
$ 150.99
$ 150.99 - $ 150.99
$ 150.99

Foster BL100FSS, 1" Straight-Thru Coupler x 1" Female NPT, FST Series, Ball Lock, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL100FSS is a 303 stainless 1" straight-t...

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$ 188.79
$ 188.79 - $ 188.79
$ 188.79
$ 150.99
$ 150.99 - $ 150.99
$ 150.99
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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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$ 64.79
$ 64.79 - $ 64.79
$ 64.79
$ 51.79
$ 51.79 - $ 51.79
$ 51.79

Foster BL100FS, 1" Straight-Thru Coupler x 1" Female NPT, FST Series, Ball Lock, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster BL100FS is a brass 1" straight-thru coupl...

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$ 64.79
$ 64.79 - $ 64.79
$ 64.79
$ 51.79
$ 51.79 - $ 51.79
$ 51.79
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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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$ 17.39
$ 17.39 - $ 17.39
$ 17.39
$ 13.89
$ 13.89 - $ 13.89
$ 13.89

Foster 75HPB, 3/4" Straight-Thru Plug x 3/4" Hose ID, FST Series, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75HPB is a brass 3/4" straight-thru plug ...

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$ 17.39
$ 17.39 - $ 17.39
$ 17.39
$ 13.89
$ 13.89 - $ 13.89
$ 13.89
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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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$ 122.49
$ 122.49 - $ 122.49
$ 122.49
$ 97.99
$ 97.99 - $ 97.99
$ 97.99

Foster 75FSS-103, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, EPDM Seal, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75FSS-103 is a 303 stainless 3/4" straigh...

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$ 122.49
$ 122.49 - $ 122.49
$ 122.49
$ 97.99
$ 97.99 - $ 97.99
$ 97.99
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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 %
$ 120.69
$ 120.69 - $ 120.69
$ 120.69
$ 96.49
$ 96.49 - $ 96.49
$ 96.49

Foster 75FSS-101, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, Viton Seal, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75FSS-101 is a 303 stainless 3/4" straigh...

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$ 120.69
$ 120.69 - $ 120.69
$ 120.69
$ 96.49
$ 96.49 - $ 96.49
$ 96.49
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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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$ 116.99
$ 116.99 - $ 116.99
$ 116.99
$ 93.59
$ 93.59 - $ 93.59
$ 93.59

Foster 75FSS, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75FSS is a 303 stainless 3/4" straight-th...

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$ 116.99
$ 116.99 - $ 116.99
$ 116.99
$ 93.59
$ 93.59 - $ 93.59
$ 93.59
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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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$ 41.29
$ 41.29 - $ 41.29
$ 41.29
$ 33.09
$ 33.09 - $ 33.09
$ 33.09

Foster 75FS-104, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, Silicone Seal, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75FS-104 is a brass 3/4" straight-thru co...

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$ 41.29
$ 41.29 - $ 41.29
$ 41.29
$ 33.09
$ 33.09 - $ 33.09
$ 33.09
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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
$ 31.79
$ 31.79 - $ 31.79
$ 31.79

Foster 75FS-103, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, EPDM Seal, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75FS-103 is a brass 3/4" straight-thru co...

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$ 39.69
$ 39.69 - $ 39.69
$ 39.69
$ 31.79
$ 31.79 - $ 31.79
$ 31.79
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 %
$ 40.39
$ 40.39 - $ 40.39
$ 40.39
$ 32.29
$ 32.29 - $ 32.29
$ 32.29

Foster 75FS-101, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, Viton Seal, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75FS-101 is a brass 3/4" straight-thru co...

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$ 40.39
$ 40.39 - $ 40.39
$ 40.39
$ 32.29
$ 32.29 - $ 32.29
$ 32.29
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 %
$ 35.59
$ 35.59 - $ 35.59
$ 35.59
$ 28.49
$ 28.49 - $ 28.49
$ 28.49

Foster 75FS, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75FS is a brass 3/4" straight-thru couple...

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$ 35.59
$ 35.59 - $ 35.59
$ 35.59
$ 28.49
$ 28.49 - $ 28.49
$ 28.49
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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$ 49.19
$ 49.19 - $ 49.19
$ 49.19
$ 39.29
$ 39.29 - $ 39.29
$ 39.29

Foster 75FPS, 3/4" Straight-Thru Plug x 3/4" Female NPT, FST Series, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75FPS is a 303 stainless 3/4" straight-th...

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$ 49.19
$ 49.19 - $ 49.19
$ 49.19
$ 39.29
$ 39.29 - $ 39.29
$ 39.29
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 %
$ 12.29
$ 12.29 - $ 12.29
$ 12.29
$ 9.79
$ 9.79 - $ 9.79
$ 9.79

Foster 75FP, 3/4" Straight-Thru Plug x 3/4" Female NPT, FST Series, Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 75FP is a steel 3/4" straight-thru plug i...

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$ 12.29
$ 12.29 - $ 12.29
$ 12.29
$ 9.79
$ 9.79 - $ 9.79
$ 9.79
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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$ 82.19
$ 82.19 - $ 82.19
$ 82.19
$ 65.79
$ 65.79 - $ 65.79
$ 65.79

Foster 50FSS-103, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, EPDM Seal, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 50FSS-103 is a 303 stainless 1/2" straigh...

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$ 82.19
$ 82.19 - $ 82.19
$ 82.19
$ 65.79
$ 65.79 - $ 65.79
$ 65.79
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 %
$ 80.79
$ 80.79 - $ 80.79
$ 80.79
$ 64.69
$ 64.69 - $ 64.69
$ 64.69

Foster 50FSS-101, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, Viton Seal, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 50FSS-101 is a 303 stainless 1/2" straigh...

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$ 80.79
$ 80.79 - $ 80.79
$ 80.79
$ 64.69
$ 64.69 - $ 64.69
$ 64.69
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 %
$ 77.99
$ 77.99 - $ 77.99
$ 77.99
$ 62.39
$ 62.39 - $ 62.39
$ 62.39

Foster 50FSS, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, 303 Stainless Steel

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 50FSS is a 303 stainless 1/2" straight-th...

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$ 77.99
$ 77.99 - $ 77.99
$ 77.99
$ 62.39
$ 62.39 - $ 62.39
$ 62.39
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 %
$ 24.79
$ 24.79 - $ 24.79
$ 24.79
$ 19.89
$ 19.89 - $ 19.89
$ 19.89

Foster 50FS-103, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, EPDM Seal, Brass

Maximum flow with no restriction, for air and fluid lines where shut-off is handled elsewhere. The Foster 50FS-103 is a brass 1/2" straight-thru co...

View full details
$ 24.79
$ 24.79 - $ 24.79
$ 24.79
$ 19.89
$ 19.89 - $ 19.89
$ 19.89
Save 20% Save %

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