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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 %
$ 366.00
$ 366.00 - $ 366.00
$ 366.00
$ 293.00
$ 293.00 - $ 293.00
$ 293.00

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

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

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$ 366.00
$ 366.00 - $ 366.00
$ 366.00
$ 293.00
$ 293.00 - $ 293.00
$ 293.00
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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 %
$ 338.00
$ 338.00 - $ 338.00
$ 338.00
$ 271.00
$ 271.00 - $ 271.00
$ 271.00

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

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

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$ 338.00
$ 338.00 - $ 338.00
$ 338.00
$ 271.00
$ 271.00 - $ 271.00
$ 271.00
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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 %
$ 492.00
$ 492.00 - $ 492.00
$ 492.00
$ 393.00
$ 393.00 - $ 393.00
$ 393.00

Foster BLSB5-3W, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 9/16" OD, 3 Series, Ball Lock, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSB5-3W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — ...

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$ 492.00
$ 492.00 - $ 492.00
$ 492.00
$ 393.00
$ 393.00 - $ 393.00
$ 393.00
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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 %
$ 366.00
$ 366.00 - $ 366.00
$ 366.00
$ 293.00
$ 293.00 - $ 293.00
$ 293.00

Foster SB5-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 9/16" OD, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SB5-3 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — ...

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$ 366.00
$ 366.00 - $ 366.00
$ 366.00
$ 293.00
$ 293.00 - $ 293.00
$ 293.00
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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
$ 305.00
$ 305.00 - $ 305.00
$ 305.00

Foster BLSB5-3, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 9/16" OD, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSB5-3 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
$ 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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$ 411.00
$ 411.00 - $ 411.00
$ 411.00
$ 329.00
$ 329.00 - $ 329.00
$ 329.00

Foster SB3-3W, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 1/2" OD, 3 Series, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SB3-3W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — th...

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$ 411.00
$ 411.00 - $ 411.00
$ 411.00
$ 329.00
$ 329.00 - $ 329.00
$ 329.00
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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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$ 1,902.00
$ 1,902.00 - $ 1,902.00
$ 1,902.00
$ 1,523.00
$ 1,523.00 - $ 1,523.00
$ 1,523.00

Foster SB3-3S/S, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 1/2" OD, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster SB3-3S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Seri...

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$ 1,902.00
$ 1,902.00 - $ 1,902.00
$ 1,902.00
$ 1,523.00
$ 1,523.00 - $ 1,523.00
$ 1,523.00
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 %
$ 456.00
$ 456.00 - $ 456.00
$ 456.00
$ 364.00
$ 364.00 - $ 364.00
$ 364.00

Foster BLSB3-3W, 1/4" Industrial Coupler x Reusable Hose Fitting, 1/4" ID x 1/2" OD, 3 Series, Ball Lock, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BLSB3-3W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — ...

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$ 456.00
$ 456.00 - $ 456.00
$ 456.00
$ 364.00
$ 364.00 - $ 364.00
$ 364.00
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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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$ 343.00
$ 343.00 - $ 343.00
$ 343.00
$ 274.00
$ 274.00 - $ 274.00
$ 274.00

Foster 3703W, 1/4" Industrial Coupler x 3/8" Hose ID, 3 Series, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3703W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 343.00
$ 343.00 - $ 343.00
$ 343.00
$ 274.00
$ 274.00 - $ 274.00
$ 274.00
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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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$ 1,252.00
$ 1,252.00 - $ 1,252.00
$ 1,252.00
$ 1,001.00
$ 1,001.00 - $ 1,001.00
$ 1,001.00

Foster BL3703S/S, 1/4" Industrial Coupler x 3/8" Hose ID, 3 Series, Ball Lock, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3703S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Ser...

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$ 1,252.00
$ 1,252.00 - $ 1,252.00
$ 1,252.00
$ 1,001.00
$ 1,001.00 - $ 1,001.00
$ 1,001.00
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 %
$ 1,192.00
$ 1,192.00 - $ 1,192.00
$ 1,192.00
$ 955.00
$ 955.00 - $ 955.00
$ 955.00

Foster 3703S/S, 1/4" Industrial Coupler x 3/8" Hose ID, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3703S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Serie...

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$ 1,192.00
$ 1,192.00 - $ 1,192.00
$ 1,192.00
$ 955.00
$ 955.00 - $ 955.00
$ 955.00
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 %
$ 340.00
$ 340.00 - $ 340.00
$ 340.00
$ 272.00
$ 272.00 - $ 272.00
$ 272.00

Foster 3703S, 1/4" Industrial Coupler x 3/8" Hose ID, 3 Series, Steam/EPDM, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3703S is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 340.00
$ 340.00 - $ 340.00
$ 340.00
$ 272.00
$ 272.00 - $ 272.00
$ 272.00
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
$ 246.00
$ 246.00 - $ 246.00
$ 246.00

Foster BL3703, 1/4" Industrial Coupler x 3/8" Hose ID, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3703 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 307.00
$ 307.00 - $ 307.00
$ 307.00
$ 246.00
$ 246.00 - $ 246.00
$ 246.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 272.00
$ 272.00 - $ 272.00
$ 272.00
$ 219.00
$ 219.00 - $ 219.00
$ 219.00

Foster 3703, 1/4" Industrial Coupler x 3/8" Hose ID, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3703 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — t...

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$ 272.00
$ 272.00 - $ 272.00
$ 272.00
$ 219.00
$ 219.00 - $ 219.00
$ 219.00
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 303.00
$ 303.00 - $ 303.00
$ 303.00
$ 243.00
$ 243.00 - $ 243.00
$ 243.00

Foster BL3653, 1/4" Industrial Coupler x 5/16" Hose ID, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3653 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 303.00
$ 303.00 - $ 303.00
$ 303.00
$ 243.00
$ 243.00 - $ 243.00
$ 243.00
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 %
$ 1,168.00
$ 1,168.00 - $ 1,168.00
$ 1,168.00
$ 934.00
$ 934.00 - $ 934.00
$ 934.00

Foster 3603S/S, 1/4" Industrial Coupler x 1/4" Hose ID, 3 Series, 303 Stainless

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3603S/S is a 303 Stainless 1/4" industrial coupler from the Foster 3 Serie...

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$ 1,168.00
$ 1,168.00 - $ 1,168.00
$ 1,168.00
$ 934.00
$ 934.00 - $ 934.00
$ 934.00
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 %
$ 296.00
$ 296.00 - $ 296.00
$ 296.00
$ 238.00
$ 238.00 - $ 238.00
$ 238.00

Foster 3653, 1/4" Industrial Coupler x 5/16" Hose ID, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3653 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — t...

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$ 296.00
$ 296.00 - $ 296.00
$ 296.00
$ 238.00
$ 238.00 - $ 238.00
$ 238.00
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
$ 246.00
$ 246.00 - $ 246.00
$ 246.00

Foster 3603W, 1/4" Industrial Coupler x 1/4" Hose ID, 3 Series, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3603W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 307.00
$ 307.00 - $ 307.00
$ 307.00
$ 246.00
$ 246.00 - $ 246.00
$ 246.00
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 %
$ 316.00
$ 316.00 - $ 316.00
$ 316.00
$ 253.00
$ 253.00 - $ 253.00
$ 253.00

Foster 3603S, 1/4" Industrial Coupler x 1/4" Hose ID, 3 Series, Steam/EPDM, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3603S is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 316.00
$ 316.00 - $ 316.00
$ 316.00
$ 253.00
$ 253.00 - $ 253.00
$ 253.00
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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 %
$ 283.00
$ 283.00 - $ 283.00
$ 283.00
$ 225.00
$ 225.00 - $ 225.00
$ 225.00

Foster BL3603, 1/4" Industrial Coupler x 1/4" Hose ID, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL3603 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 283.00
$ 283.00 - $ 283.00
$ 283.00
$ 225.00
$ 225.00 - $ 225.00
$ 225.00
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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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$ 250.00
$ 250.00 - $ 250.00
$ 250.00
$ 199.00
$ 199.00 - $ 199.00
$ 199.00

Foster 3603, 1/4" Industrial Coupler x 1/4" Hose ID, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3603 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — t...

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$ 250.00
$ 250.00 - $ 250.00
$ 250.00
$ 199.00
$ 199.00 - $ 199.00
$ 199.00
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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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$ 350.00
$ 350.00 - $ 350.00
$ 350.00
$ 279.00
$ 279.00 - $ 279.00
$ 279.00

Foster 1713W, 1/4" Industrial Coupler x 3/8" Push-On Hose Stem, 3 Series, Water, Brass/SS

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 1713W is a Brass/SS 1/4" industrial coupler from the Foster 3 Series — the...

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$ 350.00
$ 350.00 - $ 350.00
$ 350.00
$ 279.00
$ 279.00 - $ 279.00
$ 279.00
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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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$ 322.00
$ 322.00 - $ 322.00
$ 322.00
$ 258.00
$ 258.00 - $ 258.00
$ 258.00

Foster BL1713, 1/4" Industrial Coupler x 3/8" Push-On Hose Stem, 3 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster BL1713 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series —...

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$ 322.00
$ 322.00 - $ 322.00
$ 322.00
$ 258.00
$ 258.00 - $ 258.00
$ 258.00
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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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$ 281.00
$ 281.00 - $ 281.00
$ 281.00
$ 224.00
$ 224.00 - $ 224.00
$ 224.00

Foster 1713, 1/4" Industrial Coupler x 3/8" Push-On Hose Stem, 3 Series, Brass/Steel

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 1713 is a Brass/Steel 1/4" industrial coupler from the Foster 3 Series — t...

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$ 281.00
$ 281.00 - $ 281.00
$ 281.00
$ 224.00
$ 224.00 - $ 224.00
$ 224.00
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