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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 %
$ 1,325.00
$ 1,325.00 - $ 1,325.00
$ 1,325.00
$ 1,060.00
$ 1,060.00 - $ 1,060.00
$ 1,060.00

Foster BLFHS3F3, 3/8" Snap-Tite H Interchange Coupler x 3/8" Female NPT, FH Series, Ball Lock, Zinc-Plated Steel

High-flow hydraulic and pneumatic connections proven in gas and fluid handling. The Foster BLFHS3F3 is a zinc-plated steel 3/8" coupler from the FH...

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$ 1,325.00
$ 1,325.00 - $ 1,325.00
$ 1,325.00
$ 1,060.00
$ 1,060.00 - $ 1,060.00
$ 1,060.00
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 %
$ 472.00
$ 472.00 - $ 472.00
$ 472.00
$ 377.00
$ 377.00 - $ 377.00
$ 377.00

Foster BLFHS3, 3/8" Snap-Tite H Interchange Coupler x 3/8" Female NPT, FH Series, Ball Lock, Zinc-Plated Steel

High-flow hydraulic and pneumatic connections proven in gas and fluid handling. The Foster BLFHS3 is a zinc-plated steel 3/8" coupler from the FH S...

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$ 472.00
$ 472.00 - $ 472.00
$ 472.00
$ 377.00
$ 377.00 - $ 377.00
$ 377.00
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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 %
$ 717.00
$ 717.00 - $ 717.00
$ 717.00
$ 574.00
$ 574.00 - $ 574.00
$ 574.00

Foster BLFHS2M2B, 1/4" Snap-Tite H Interchange Coupler x 1/4" Male NPT, FH Series, Ball Lock, Brass

High-flow hydraulic and pneumatic connections proven in gas and fluid handling. The Foster BLFHS2M2B is a brass 1/4" coupler from the FH Series, wh...

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$ 717.00
$ 717.00 - $ 717.00
$ 717.00
$ 574.00
$ 574.00 - $ 574.00
$ 574.00
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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 %
$ 569.00
$ 569.00 - $ 569.00
$ 569.00
$ 455.00
$ 455.00 - $ 455.00
$ 455.00

Foster BLFHS2M2, 1/4" Snap-Tite H Interchange Coupler x 1/4" Male NPT, FH Series, Ball Lock, Zinc-Plated Steel

High-flow hydraulic and pneumatic connections proven in gas and fluid handling. The Foster BLFHS2M2 is a zinc-plated steel 1/4" coupler from the FH...

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$ 569.00
$ 569.00 - $ 569.00
$ 569.00
$ 455.00
$ 455.00 - $ 455.00
$ 455.00
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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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$ 692.00
$ 692.00 - $ 692.00
$ 692.00
$ 555.00
$ 555.00 - $ 555.00
$ 555.00

Foster BLFHS2F2B, 1/4" Snap-Tite H Interchange Coupler x 1/4" Female NPT, FH Series, Ball Lock, Brass

High-flow hydraulic and pneumatic connections proven in gas and fluid handling. The Foster BLFHS2F2B is a brass 1/4" coupler from the FH Series, wh...

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$ 692.00
$ 692.00 - $ 692.00
$ 692.00
$ 555.00
$ 555.00 - $ 555.00
$ 555.00
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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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$ 530.00
$ 530.00 - $ 530.00
$ 530.00
$ 425.00
$ 425.00 - $ 425.00
$ 425.00

Foster BLFHS2F2, 1/4" Snap-Tite H Interchange Coupler x 1/4" Female NPT, FH Series, Ball Lock, Zinc-Plated Steel

High-flow hydraulic and pneumatic connections proven in gas and fluid handling. The Foster BLFHS2F2 is a zinc-plated steel 1/4" coupler from the FH...

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$ 530.00
$ 530.00 - $ 530.00
$ 530.00
$ 425.00
$ 425.00 - $ 425.00
$ 425.00
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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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$ 455.00
$ 455.00 - $ 455.00
$ 455.00
$ 363.00
$ 363.00 - $ 363.00
$ 363.00

Foster BLFHS2B, 1/4" Snap-Tite H Interchange Coupler x 1/4" Female NPT, FH Series, Ball Lock, Brass

High-flow hydraulic and pneumatic connections proven in gas and fluid handling. The Foster BLFHS2B is a brass 1/4" coupler from the FH Series, whic...

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$ 455.00
$ 455.00 - $ 455.00
$ 455.00
$ 363.00
$ 363.00 - $ 363.00
$ 363.00
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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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$ 1,395.00
$ 1,395.00 - $ 1,395.00
$ 1,395.00
$ 1,115.00
$ 1,115.00 - $ 1,115.00
$ 1,115.00

Foster BL38FSS, 3/8" Straight-Thru Coupler x 3/8" 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 BL38FSS is a 303 stainless 3/8" straight-...

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$ 1,395.00
$ 1,395.00 - $ 1,395.00
$ 1,395.00
$ 1,115.00
$ 1,115.00 - $ 1,115.00
$ 1,115.00
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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$ 2,297.00
$ 2,297.00 - $ 2,297.00
$ 2,297.00
$ 1,837.00
$ 1,837.00 - $ 1,837.00
$ 1,837.00

Foster BL75FSS, 3/4" Straight-Thru Coupler x 3/4" 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 BL75FSS is a 303 stainless 3/4" straight-...

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$ 2,297.00
$ 2,297.00 - $ 2,297.00
$ 2,297.00
$ 1,837.00
$ 1,837.00 - $ 1,837.00
$ 1,837.00
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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$ 826.00
$ 826.00 - $ 826.00
$ 826.00
$ 661.00
$ 661.00 - $ 661.00
$ 661.00

Foster BL75FS, 3/4" Straight-Thru Coupler x 3/4" 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 BL75FS is a brass 3/4" straight-thru coup...

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$ 826.00
$ 826.00 - $ 826.00
$ 826.00
$ 661.00
$ 661.00 - $ 661.00
$ 661.00
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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 %
$ 1,576.00
$ 1,576.00 - $ 1,576.00
$ 1,576.00
$ 1,261.00
$ 1,261.00 - $ 1,261.00
$ 1,261.00

Foster BL50FSS, 1/2" Straight-Thru Coupler x 1/2" 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 BL50FSS is a 303 stainless 1/2" straight-...

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$ 1,576.00
$ 1,576.00 - $ 1,576.00
$ 1,576.00
$ 1,261.00
$ 1,261.00 - $ 1,261.00
$ 1,261.00
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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$ 544.00
$ 544.00 - $ 544.00
$ 544.00
$ 435.00
$ 435.00 - $ 435.00
$ 435.00

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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$ 544.00
$ 544.00 - $ 544.00
$ 544.00
$ 435.00
$ 435.00 - $ 435.00
$ 435.00
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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$ 421.00
$ 421.00 - $ 421.00
$ 421.00
$ 337.00
$ 337.00 - $ 337.00
$ 337.00

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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$ 421.00
$ 421.00 - $ 421.00
$ 421.00
$ 337.00
$ 337.00 - $ 337.00
$ 337.00
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 %
$ 1,295.00
$ 1,295.00 - $ 1,295.00
$ 1,295.00
$ 1,036.00
$ 1,036.00 - $ 1,036.00
$ 1,036.00

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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$ 1,295.00
$ 1,295.00 - $ 1,295.00
$ 1,295.00
$ 1,036.00
$ 1,036.00 - $ 1,036.00
$ 1,036.00
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 %
$ 363.00
$ 363.00 - $ 363.00
$ 363.00
$ 291.00
$ 291.00 - $ 291.00
$ 291.00

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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$ 363.00
$ 363.00 - $ 363.00
$ 363.00
$ 291.00
$ 291.00 - $ 291.00
$ 291.00
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 %
$ 5,306.00
$ 5,306.00 - $ 5,306.00
$ 5,306.00
$ 4,244.00
$ 4,244.00 - $ 4,244.00
$ 4,244.00

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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$ 5,306.00
$ 5,306.00 - $ 5,306.00
$ 5,306.00
$ 4,244.00
$ 4,244.00 - $ 4,244.00
$ 4,244.00
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 %
$ 842.00
$ 842.00 - $ 842.00
$ 842.00
$ 673.00
$ 673.00 - $ 673.00
$ 673.00

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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$ 842.00
$ 842.00 - $ 842.00
$ 842.00
$ 673.00
$ 673.00 - $ 673.00
$ 673.00
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 %
$ 326.00
$ 326.00 - $ 326.00
$ 326.00
$ 261.00
$ 261.00 - $ 261.00
$ 261.00

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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$ 326.00
$ 326.00 - $ 326.00
$ 326.00
$ 261.00
$ 261.00 - $ 261.00
$ 261.00
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 %
$ 3,057.00
$ 3,057.00 - $ 3,057.00
$ 3,057.00
$ 2,446.00
$ 2,446.00 - $ 2,446.00
$ 2,446.00

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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$ 3,057.00
$ 3,057.00 - $ 3,057.00
$ 3,057.00
$ 2,446.00
$ 2,446.00 - $ 2,446.00
$ 2,446.00
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 %
$ 3,325.00
$ 3,325.00 - $ 3,325.00
$ 3,325.00
$ 2,659.00
$ 2,659.00 - $ 2,659.00
$ 2,659.00

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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$ 3,325.00
$ 3,325.00 - $ 3,325.00
$ 3,325.00
$ 2,659.00
$ 2,659.00 - $ 2,659.00
$ 2,659.00
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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$ 1,141.00
$ 1,141.00 - $ 1,141.00
$ 1,141.00
$ 912.00
$ 912.00 - $ 912.00
$ 912.00

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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$ 1,141.00
$ 1,141.00 - $ 1,141.00
$ 1,141.00
$ 912.00
$ 912.00 - $ 912.00
$ 912.00
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 %
$ 307.00
$ 307.00 - $ 307.00
$ 307.00
$ 245.00
$ 245.00 - $ 245.00
$ 245.00

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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$ 307.00
$ 307.00 - $ 307.00
$ 307.00
$ 245.00
$ 245.00 - $ 245.00
$ 245.00
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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$ 2,157.00
$ 2,157.00 - $ 2,157.00
$ 2,157.00
$ 1,726.00
$ 1,726.00 - $ 1,726.00
$ 1,726.00

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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$ 2,157.00
$ 2,157.00 - $ 2,157.00
$ 2,157.00
$ 1,726.00
$ 1,726.00 - $ 1,726.00
$ 1,726.00
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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$ 2,126.00
$ 2,126.00 - $ 2,126.00
$ 2,126.00
$ 1,700.00
$ 1,700.00 - $ 1,700.00
$ 1,700.00

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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$ 2,126.00
$ 2,126.00 - $ 2,126.00
$ 2,126.00
$ 1,700.00
$ 1,700.00 - $ 1,700.00
$ 1,700.00
Save 20% Save %

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