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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 %
$ 276.00
$ 276.00 - $ 276.00
$ 276.00
$ 220.00
$ 220.00 - $ 220.00
$ 220.00

Foster SG3103D, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Sleeve Guard, Dill Valve, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3103D is a Brass 1/4" industrial coupler from the Foster 3 Series — the ...

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$ 276.00
$ 276.00 - $ 276.00
$ 276.00
$ 220.00
$ 220.00 - $ 220.00
$ 220.00
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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 %
$ 225.00
$ 225.00 - $ 225.00
$ 225.00
$ 180.00
$ 180.00 - $ 180.00
$ 180.00

Foster SG3103, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3103 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

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$ 225.00
$ 225.00 - $ 225.00
$ 225.00
$ 180.00
$ 180.00 - $ 180.00
$ 180.00
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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 %
$ 307.00
$ 307.00 - $ 307.00
$ 307.00
$ 245.00
$ 245.00 - $ 245.00
$ 245.00

Foster SG2903, 1/4" Industrial Coupler x 1/8" Male NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG2903 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

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$ 307.00
$ 307.00 - $ 307.00
$ 307.00
$ 245.00
$ 245.00 - $ 245.00
$ 245.00
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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 %
$ 241.00
$ 241.00 - $ 241.00
$ 241.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00

Foster SG3203, 1/4" Industrial Coupler x 3/8" Female NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3203 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

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$ 241.00
$ 241.00 - $ 241.00
$ 241.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00
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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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$ 203.00
$ 203.00 - $ 203.00
$ 203.00
$ 163.00
$ 163.00 - $ 163.00
$ 163.00

Foster SG3003LV, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Sleeve Guard, Less Valve, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3003LV is a Brass 1/4" industrial coupler from the Foster 3 Series — the...

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$ 203.00
$ 203.00 - $ 203.00
$ 203.00
$ 163.00
$ 163.00 - $ 163.00
$ 163.00
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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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$ 224.00
$ 224.00 - $ 224.00
$ 224.00
$ 179.00
$ 179.00 - $ 179.00
$ 179.00

Foster SG3003, 1/4" Industrial Coupler x 1/4" Female NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG3003 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

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$ 224.00
$ 224.00 - $ 224.00
$ 224.00
$ 179.00
$ 179.00 - $ 179.00
$ 179.00
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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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$ 373.00
$ 373.00 - $ 373.00
$ 373.00
$ 298.00
$ 298.00 - $ 298.00
$ 298.00

Foster SG2803, 1/4" Industrial Coupler x 1/8" Female NPT, 3 Series, Sleeve Guard, Brass

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SG2803 is a Brass 1/4" industrial coupler from the Foster 3 Series — the m...

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$ 373.00
$ 373.00 - $ 373.00
$ 373.00
$ 298.00
$ 298.00 - $ 298.00
$ 298.00
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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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$ 87.00
$ 87.00 - $ 87.00
$ 87.00
$ 70.00
$ 70.00 - $ 70.00
$ 70.00

Foster 3SDC, 1/4" 3 Series Socket Dust Cap, Steel

Protect your 1/4" 3 Series quick sockets when not in use. The Foster 3SDC dust cap keeps dirt, chips, and moisture out of the coupling, helping pre...

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$ 87.00
$ 87.00 - $ 87.00
$ 87.00
$ 70.00
$ 70.00 - $ 70.00
$ 70.00
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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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$ 421.00
$ 421.00 - $ 421.00
$ 421.00
$ 338.00
$ 338.00 - $ 338.00
$ 338.00

Foster BLSD13-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSD13-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series...

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$ 421.00
$ 421.00 - $ 421.00
$ 421.00
$ 338.00
$ 338.00 - $ 338.00
$ 338.00
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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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$ 390.00
$ 390.00 - $ 390.00
$ 390.00
$ 312.00
$ 312.00 - $ 312.00
$ 312.00

Foster SD13-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SD13-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 390.00
$ 390.00 - $ 390.00
$ 390.00
$ 312.00
$ 312.00 - $ 312.00
$ 312.00
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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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$ 414.00
$ 414.00 - $ 414.00
$ 414.00
$ 331.00
$ 331.00 - $ 331.00
$ 331.00

Foster BLSD11-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 3/4" OD, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSD11-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series...

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$ 414.00
$ 414.00 - $ 414.00
$ 414.00
$ 331.00
$ 331.00 - $ 331.00
$ 331.00
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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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$ 383.00
$ 383.00 - $ 383.00
$ 383.00
$ 307.00
$ 307.00 - $ 307.00
$ 307.00

Foster SD11-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 3/4" OD, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SD11-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 383.00
$ 383.00 - $ 383.00
$ 383.00
$ 307.00
$ 307.00 - $ 307.00
$ 307.00
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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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$ 381.00
$ 381.00 - $ 381.00
$ 381.00
$ 305.00
$ 305.00 - $ 305.00
$ 305.00

Foster BLSD9-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 11/16" OD, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSD9-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series ...

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$ 381.00
$ 381.00 - $ 381.00
$ 381.00
$ 305.00
$ 305.00 - $ 305.00
$ 305.00
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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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$ 355.00
$ 355.00 - $ 355.00
$ 355.00
$ 284.00
$ 284.00 - $ 284.00
$ 284.00

Foster SD9-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 11/16" OD, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SD9-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — ...

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$ 355.00
$ 355.00 - $ 355.00
$ 355.00
$ 284.00
$ 284.00 - $ 284.00
$ 284.00
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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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$ 374.00
$ 374.00 - $ 374.00
$ 374.00
$ 300.00
$ 300.00 - $ 300.00
$ 300.00

Foster BLSD7-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 5/8" OD, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSD7-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series ...

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$ 374.00
$ 374.00 - $ 374.00
$ 374.00
$ 300.00
$ 300.00 - $ 300.00
$ 300.00
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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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$ 352.00
$ 352.00 - $ 352.00
$ 352.00
$ 281.00
$ 281.00 - $ 281.00
$ 281.00

Foster SD7-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 5/8" OD, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SD7-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — ...

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$ 352.00
$ 352.00 - $ 352.00
$ 352.00
$ 281.00
$ 281.00 - $ 281.00
$ 281.00
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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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$ 570.00
$ 570.00 - $ 570.00
$ 570.00
$ 456.00
$ 456.00 - $ 456.00
$ 456.00

Foster BLSC7-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 5/16" ID x 5/8" OD, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSC7-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series ...

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$ 570.00
$ 570.00 - $ 570.00
$ 570.00
$ 456.00
$ 456.00 - $ 456.00
$ 456.00
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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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$ 572.00
$ 572.00 - $ 572.00
$ 572.00
$ 458.00
$ 458.00 - $ 458.00
$ 458.00

Foster SC7-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 5/16" ID x 5/8" OD, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SC7-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — ...

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$ 572.00
$ 572.00 - $ 572.00
$ 572.00
$ 458.00
$ 458.00 - $ 458.00
$ 458.00
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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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$ 563.00
$ 563.00 - $ 563.00
$ 563.00
$ 451.00
$ 451.00 - $ 451.00
$ 451.00

Foster BLSC5-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 5/16" ID x 9/16" OD, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSC5-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series ...

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$ 563.00
$ 563.00 - $ 563.00
$ 563.00
$ 451.00
$ 451.00 - $ 451.00
$ 451.00
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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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$ 565.00
$ 565.00 - $ 565.00
$ 565.00
$ 452.00
$ 452.00 - $ 452.00
$ 452.00

Foster SC5-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 5/16" ID x 9/16" OD, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SC5-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — ...

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$ 565.00
$ 565.00 - $ 565.00
$ 565.00
$ 452.00
$ 452.00 - $ 452.00
$ 452.00
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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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$ 463.00
$ 463.00 - $ 463.00
$ 463.00
$ 371.00
$ 371.00 - $ 371.00
$ 371.00

Foster BLSB7-3W, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 5/8" OD, 3 Series, Ball Lock, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSB7-3W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — ...

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$ 463.00
$ 463.00 - $ 463.00
$ 463.00
$ 371.00
$ 371.00 - $ 371.00
$ 371.00
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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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$ 399.00
$ 399.00 - $ 399.00
$ 399.00
$ 319.00
$ 319.00 - $ 319.00
$ 319.00

Foster SB7-3W, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 5/8" OD, 3 Series, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SB7-3W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — th...

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$ 399.00
$ 399.00 - $ 399.00
$ 399.00
$ 319.00
$ 319.00 - $ 319.00
$ 319.00
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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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$ 1,168.00
$ 1,168.00 - $ 1,168.00
$ 1,168.00
$ 934.00
$ 934.00 - $ 934.00
$ 934.00

Foster BLSB7-3S/S, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 5/8" OD, 3 Series, Ball Lock, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSB7-3S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Se...

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$ 1,168.00
$ 1,168.00 - $ 1,168.00
$ 1,168.00
$ 934.00
$ 934.00 - $ 934.00
$ 934.00
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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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$ 1,100.00
$ 1,100.00 - $ 1,100.00
$ 1,100.00
$ 880.00
$ 880.00 - $ 880.00
$ 880.00

Foster SB7-3S/S, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 5/8" OD, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SB7-3S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Seri...

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$ 1,100.00
$ 1,100.00 - $ 1,100.00
$ 1,100.00
$ 880.00
$ 880.00 - $ 880.00
$ 880.00
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