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Foster ISO-B Series Couplers

Foster ISO-B (FHK) Series hydraulic quick couplers and plugs, compatible with ISO 7241-1 Series B — the most widely used industrial hydraulic interchange. Two-way shut-off seals both halves at disconnect to prevent fluid loss and air inclusion. Manual sleeve connection at zero pressure. Body sizes 1/8" to 1", in RoHS-plated steel, brass, and 303/316 stainless with Buna-N seals.

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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 %
$ 1,739.00
$ 1,739.00 - $ 1,739.00
$ 1,739.00
$ 1,392.00
$ 1,392.00 - $ 1,392.00
$ 1,392.00

Foster BLH3S/S, 3/8" ISO-B Hydraulic Coupler x 3/8" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH3S/S is a 303 stainless 3/8" coupler i...

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$ 1,739.00
$ 1,739.00 - $ 1,739.00
$ 1,739.00
$ 1,392.00
$ 1,392.00 - $ 1,392.00
$ 1,392.00
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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 %
$ 906.00
$ 906.00 - $ 906.00
$ 906.00
$ 725.00
$ 725.00 - $ 725.00
$ 725.00

Foster BLH3S8, 3/8" ISO-B Hydraulic Coupler x 3/4"-16 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH3S8 is a steel 3/8" coupler in the FHK...

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$ 906.00
$ 906.00 - $ 906.00
$ 906.00
$ 725.00
$ 725.00 - $ 725.00
$ 725.00
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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 %
$ 1,311.00
$ 1,311.00 - $ 1,311.00
$ 1,311.00
$ 1,048.00
$ 1,048.00 - $ 1,048.00
$ 1,048.00

Foster BLH4B, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Ball Lock, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH4B is a brass 1/2" coupler in the FHK ...

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$ 1,311.00
$ 1,311.00 - $ 1,311.00
$ 1,311.00
$ 1,048.00
$ 1,048.00 - $ 1,048.00
$ 1,048.00
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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 %
$ 1,020.00
$ 1,020.00 - $ 1,020.00
$ 1,020.00
$ 816.00
$ 816.00 - $ 816.00
$ 816.00

Foster BLH4S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH4S is a steel 1/2" coupler in the FHK ...

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$ 1,020.00
$ 1,020.00 - $ 1,020.00
$ 1,020.00
$ 816.00
$ 816.00 - $ 816.00
$ 816.00
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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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$ 2,925.00
$ 2,925.00 - $ 2,925.00
$ 2,925.00
$ 2,341.00
$ 2,341.00 - $ 2,341.00
$ 2,341.00

Foster BLH4S/S, 1/2" ISO-B Hydraulic Coupler x 1/2" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH4S/S is a 303 stainless 1/2" coupler i...

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$ 2,925.00
$ 2,925.00 - $ 2,925.00
$ 2,925.00
$ 2,341.00
$ 2,341.00 - $ 2,341.00
$ 2,341.00
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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$ 1,226.00
$ 1,226.00 - $ 1,226.00
$ 1,226.00
$ 982.00
$ 982.00 - $ 982.00
$ 982.00

Foster BLH4S10, 1/2" ISO-B Hydraulic Coupler x 7/8"-14 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH4S10 is a steel 1/2" coupler in the FH...

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$ 1,226.00
$ 1,226.00 - $ 1,226.00
$ 1,226.00
$ 982.00
$ 982.00 - $ 982.00
$ 982.00
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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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$ 2,248.00
$ 2,248.00 - $ 2,248.00
$ 2,248.00
$ 1,798.00
$ 1,798.00 - $ 1,798.00
$ 1,798.00

Foster BLH6B, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Ball Lock, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH6B is a brass 3/4" coupler in the FHK ...

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$ 2,248.00
$ 2,248.00 - $ 2,248.00
$ 2,248.00
$ 1,798.00
$ 1,798.00 - $ 1,798.00
$ 1,798.00
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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$ 1,729.00
$ 1,729.00 - $ 1,729.00
$ 1,729.00
$ 1,383.00
$ 1,383.00 - $ 1,383.00
$ 1,383.00

Foster BLH6S, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH6S is a steel 3/4" coupler in the FHK ...

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$ 1,729.00
$ 1,729.00 - $ 1,729.00
$ 1,729.00
$ 1,383.00
$ 1,383.00 - $ 1,383.00
$ 1,383.00
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 %
$ 4,723.00
$ 4,723.00 - $ 4,723.00
$ 4,723.00
$ 3,777.00
$ 3,777.00 - $ 3,777.00
$ 3,777.00

Foster BLH6S/S, 3/4" ISO-B Hydraulic Coupler x 3/4" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH6S/S is a 303 stainless 3/4" coupler i...

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$ 4,723.00
$ 4,723.00 - $ 4,723.00
$ 4,723.00
$ 3,777.00
$ 3,777.00 - $ 3,777.00
$ 3,777.00
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 %
$ 1,750.00
$ 1,750.00 - $ 1,750.00
$ 1,750.00
$ 1,401.00
$ 1,401.00 - $ 1,401.00
$ 1,401.00

Foster BLH6S12, 3/4" ISO-B Hydraulic Coupler x 1-1/16"-12 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH6S12 is a steel 3/4" coupler in the FH...

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$ 1,750.00
$ 1,750.00 - $ 1,750.00
$ 1,750.00
$ 1,401.00
$ 1,401.00 - $ 1,401.00
$ 1,401.00
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 %
$ 3,262.00
$ 3,262.00 - $ 3,262.00
$ 3,262.00
$ 2,611.00
$ 2,611.00 - $ 2,611.00
$ 2,611.00

Foster BLH8B, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Ball Lock, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH8B is a brass 1" coupler in the FHK Se...

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$ 3,262.00
$ 3,262.00 - $ 3,262.00
$ 3,262.00
$ 2,611.00
$ 2,611.00 - $ 2,611.00
$ 2,611.00
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 %
$ 2,111.00
$ 2,111.00 - $ 2,111.00
$ 2,111.00
$ 1,689.00
$ 1,689.00 - $ 1,689.00
$ 1,689.00

Foster BLH8S, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH8S is a steel 1" coupler in the FHK Se...

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$ 2,111.00
$ 2,111.00 - $ 2,111.00
$ 2,111.00
$ 1,689.00
$ 1,689.00 - $ 1,689.00
$ 1,689.00
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 %
$ 6,956.00
$ 6,956.00 - $ 6,956.00
$ 6,956.00
$ 5,565.00
$ 5,565.00 - $ 5,565.00
$ 5,565.00

Foster BLH8S/S, 1" ISO-B Hydraulic Coupler x 1" Female NPT, ISO-B Series, Ball Lock, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH8S/S is a 303 stainless 1" coupler in ...

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$ 6,956.00
$ 6,956.00 - $ 6,956.00
$ 6,956.00
$ 5,565.00
$ 5,565.00 - $ 5,565.00
$ 5,565.00
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 %
$ 2,372.00
$ 2,372.00 - $ 2,372.00
$ 2,372.00
$ 1,898.00
$ 1,898.00 - $ 1,898.00
$ 1,898.00

Foster BLH8S16, 1" ISO-B Hydraulic Coupler x 15/16"-12 SAE, ISO-B Series, Ball Lock, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster BLH8S16 is a steel 1" coupler in the FHK ...

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$ 2,372.00
$ 2,372.00 - $ 2,372.00
$ 2,372.00
$ 1,898.00
$ 1,898.00 - $ 1,898.00
$ 1,898.00
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 %
$ 365.00
$ 365.00 - $ 365.00
$ 365.00
$ 292.00
$ 292.00 - $ 292.00
$ 292.00

Foster H1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1B is a brass 1/8" coupler in the FHK Se...

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$ 365.00
$ 365.00 - $ 365.00
$ 365.00
$ 292.00
$ 292.00 - $ 292.00
$ 292.00
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 %
$ 486.00
$ 486.00 - $ 486.00
$ 486.00
$ 389.00
$ 389.00 - $ 389.00
$ 389.00

Foster H1B-101, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Viton Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1B-101 is a brass 1/8" coupler in the FH...

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$ 486.00
$ 486.00 - $ 486.00
$ 486.00
$ 389.00
$ 389.00 - $ 389.00
$ 389.00
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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$ 483.00
$ 483.00 - $ 483.00
$ 483.00
$ 386.00
$ 386.00 - $ 386.00
$ 386.00

Foster H1B-103, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, EPDM Seal, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1B-103 is a brass 1/8" coupler in the FH...

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$ 483.00
$ 483.00 - $ 483.00
$ 483.00
$ 386.00
$ 386.00 - $ 386.00
$ 386.00
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 %
$ 388.00
$ 388.00 - $ 388.00
$ 388.00
$ 310.00
$ 310.00 - $ 310.00
$ 310.00

Foster H1BLV, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Less Valve, Brass

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1BLV is a brass 1/8" coupler in the FHK ...

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$ 388.00
$ 388.00 - $ 388.00
$ 388.00
$ 310.00
$ 310.00 - $ 310.00
$ 310.00
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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$ 393.00
$ 393.00 - $ 393.00
$ 393.00
$ 315.00
$ 315.00 - $ 315.00
$ 315.00

Foster H1S, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1S is a steel 1/8" coupler in the FHK Se...

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$ 393.00
$ 393.00 - $ 393.00
$ 393.00
$ 315.00
$ 315.00 - $ 315.00
$ 315.00
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 %
$ 481.00
$ 481.00 - $ 481.00
$ 481.00
$ 384.00
$ 384.00 - $ 384.00
$ 384.00

Foster H1S-101, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Viton Seal, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1S-101 is a steel 1/8" coupler in the FH...

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$ 481.00
$ 481.00 - $ 481.00
$ 481.00
$ 384.00
$ 384.00 - $ 384.00
$ 384.00
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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$ 1,157.00
$ 1,157.00 - $ 1,157.00
$ 1,157.00
$ 925.00
$ 925.00 - $ 925.00
$ 925.00

Foster H1S/S, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1S/S is a 303 stainless 1/8" coupler in ...

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$ 1,157.00
$ 1,157.00 - $ 1,157.00
$ 1,157.00
$ 925.00
$ 925.00 - $ 925.00
$ 925.00
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 %
$ 1,254.00
$ 1,254.00 - $ 1,254.00
$ 1,254.00
$ 1,003.00
$ 1,003.00 - $ 1,003.00
$ 1,003.00

Foster H1S/S-101, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Viton Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1S/S-101 is a 303 stainless 1/8" coupler...

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$ 1,254.00
$ 1,254.00 - $ 1,254.00
$ 1,254.00
$ 1,003.00
$ 1,003.00 - $ 1,003.00
$ 1,003.00
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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$ 1,260.00
$ 1,260.00 - $ 1,260.00
$ 1,260.00
$ 1,008.00
$ 1,008.00 - $ 1,008.00
$ 1,008.00

Foster H1S/S-104, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Silicone Seal, 303 Stainless Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1S/S-104 is a 303 stainless 1/8" coupler...

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$ 1,260.00
$ 1,260.00 - $ 1,260.00
$ 1,260.00
$ 1,008.00
$ 1,008.00 - $ 1,008.00
$ 1,008.00
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 %
$ 488.00
$ 488.00 - $ 488.00
$ 488.00
$ 391.00
$ 391.00 - $ 391.00
$ 391.00

Foster H1S4, 1/8" ISO-B Hydraulic Coupler x 7/16"-20 SAE, ISO-B Series, Plated Steel

The most widely used industrial hydraulic quick coupling, compatible with ISO 7241-1 Series B. The Foster H1S4 is a steel 1/8" coupler in the FHK S...

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$ 488.00
$ 488.00 - $ 488.00
$ 488.00
$ 391.00
$ 391.00 - $ 391.00
$ 391.00
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