Skip to content

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.

Filters

Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 19% Save %
$ 88.00
$ 88.00 - $ 88.00
$ 88.00
$ 71.00
$ 71.00 - $ 71.00
$ 71.00

Foster B1DC, 1/8" ISO-B Dust Cap, FHK Series, Rubber

The Foster B1DC is a 1/8" ISO-B dust cap in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects coupler (female half) from ...

View full details
$ 88.00
$ 88.00 - $ 88.00
$ 88.00
$ 71.00
$ 71.00 - $ 71.00
$ 71.00
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 %
$ 110.00
$ 110.00 - $ 110.00
$ 110.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00

Foster B1DP, 1/8" ISO-B Dust Plug, FHK Series, Rubber

The Foster B1DP is a 1/8" ISO-B dust plug in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects plug (male half) from dirt...

View full details
$ 110.00
$ 110.00 - $ 110.00
$ 110.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00
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 %
$ 113.00
$ 113.00 - $ 113.00
$ 113.00
$ 90.00
$ 90.00 - $ 90.00
$ 90.00

Foster B2DC-DP, 1/4" ISO-B Dust Cap & Plug Combo, FHK Series, Rubber

The Foster B2DC-DP is a 1/4" ISO-B dust cap & plug combo in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects both co...

View full details
$ 113.00
$ 113.00 - $ 113.00
$ 113.00
$ 90.00
$ 90.00 - $ 90.00
$ 90.00
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 %
$ 121.00
$ 121.00 - $ 121.00
$ 121.00
$ 97.00
$ 97.00 - $ 97.00
$ 97.00

Foster B3DC-BLUE, 3/8" ISO-B Dust Cap (Blue), FHK Series, Rubber

The Foster B3DC-BLUE is a 3/8" ISO-B dust cap in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects coupler (female half) ...

View full details
$ 121.00
$ 121.00 - $ 121.00
$ 121.00
$ 97.00
$ 97.00 - $ 97.00
$ 97.00
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 %
$ 124.00
$ 124.00 - $ 124.00
$ 124.00
$ 101.00
$ 101.00 - $ 101.00
$ 101.00

Foster B3DC-DP, 3/8" ISO-B Dust Cap & Plug Combo, FHK Series, Rubber

The Foster B3DC-DP is a 3/8" ISO-B dust cap & plug combo in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects both co...

View full details
$ 124.00
$ 124.00 - $ 124.00
$ 124.00
$ 101.00
$ 101.00 - $ 101.00
$ 101.00
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 %
$ 121.00
$ 121.00 - $ 121.00
$ 121.00
$ 97.00
$ 97.00 - $ 97.00
$ 97.00

Foster B3DP-BLUE, 3/8" ISO-B Dust Plug (Blue), FHK Series, Rubber

The Foster B3DP-BLUE is a 3/8" ISO-B dust plug in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects plug (male half) from...

View full details
$ 121.00
$ 121.00 - $ 121.00
$ 121.00
$ 97.00
$ 97.00 - $ 97.00
$ 97.00
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 %
$ 137.00
$ 137.00 - $ 137.00
$ 137.00
$ 110.00
$ 110.00 - $ 110.00
$ 110.00

Foster B4DC-DP, 1/2" ISO-B Dust Cap & Plug Combo, FHK Series, Rubber

The Foster B4DC-DP is a 1/2" ISO-B dust cap & plug combo in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects both co...

View full details
$ 137.00
$ 137.00 - $ 137.00
$ 137.00
$ 110.00
$ 110.00 - $ 110.00
$ 110.00
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 %
$ 104.00
$ 104.00 - $ 104.00
$ 104.00
$ 84.00
$ 84.00 - $ 84.00
$ 84.00

Foster B4DP-BLUE, 1/2" ISO-B Dust Plug (Blue), FHK Series, Rubber

The Foster B4DP-BLUE is a 1/2" ISO-B dust plug in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects plug (male half) from...

View full details
$ 104.00
$ 104.00 - $ 104.00
$ 104.00
$ 84.00
$ 84.00 - $ 84.00
$ 84.00
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 %
$ 152.00
$ 152.00 - $ 152.00
$ 152.00
$ 122.00
$ 122.00 - $ 122.00
$ 122.00

Foster B6DC-BLUE, 3/4" ISO-B Dust Cap (Blue), FHK Series, Rubber

The Foster B6DC-BLUE is a 3/4" ISO-B dust cap in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects coupler (female half) ...

View full details
$ 152.00
$ 152.00 - $ 152.00
$ 152.00
$ 122.00
$ 122.00 - $ 122.00
$ 122.00
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 %
$ 246.00
$ 246.00 - $ 246.00
$ 246.00
$ 197.00
$ 197.00 - $ 197.00
$ 197.00

Foster B6DC-DP, 3/4" ISO-B Dust Cap & Plug Combo, FHK Series, Rubber

The Foster B6DC-DP is a 3/4" ISO-B dust cap & plug combo in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects both co...

View full details
$ 246.00
$ 246.00 - $ 246.00
$ 246.00
$ 197.00
$ 197.00 - $ 197.00
$ 197.00
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 %
$ 152.00
$ 152.00 - $ 152.00
$ 152.00
$ 122.00
$ 122.00 - $ 122.00
$ 122.00

Foster B6DP-BLUE, 3/4" ISO-B Dust Plug (Blue), FHK Series, Rubber

The Foster B6DP-BLUE is a 3/4" ISO-B dust plug in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects plug (male half) from...

View full details
$ 152.00
$ 152.00 - $ 152.00
$ 152.00
$ 122.00
$ 122.00 - $ 122.00
$ 122.00
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 %
$ 190.00
$ 190.00 - $ 190.00
$ 190.00
$ 152.00
$ 152.00 - $ 152.00
$ 152.00

Foster B8DC-BLUE, 1" ISO-B Dust Cap (Blue), FHK Series, Rubber

The Foster B8DC-BLUE is a 1" ISO-B dust cap in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects coupler (female half) fr...

View full details
$ 190.00
$ 190.00 - $ 190.00
$ 190.00
$ 152.00
$ 152.00 - $ 152.00
$ 152.00
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 %
$ 286.00
$ 286.00 - $ 286.00
$ 286.00
$ 228.00
$ 228.00 - $ 228.00
$ 228.00

Foster B8DC-DP, 1" ISO-B Dust Cap & Plug Combo, FHK Series, Rubber

The Foster B8DC-DP is a 1" ISO-B dust cap & plug combo in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects both coup...

View full details
$ 286.00
$ 286.00 - $ 286.00
$ 286.00
$ 228.00
$ 228.00 - $ 228.00
$ 228.00
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 %
$ 190.00
$ 190.00 - $ 190.00
$ 190.00
$ 152.00
$ 152.00 - $ 152.00
$ 152.00

Foster B8DP-BLUE, 1" ISO-B Dust Plug (Blue), FHK Series, Rubber

The Foster B8DP-BLUE is a 1" ISO-B dust plug in rubber for FHK / ISO 7241-1 Series B hydraulic quick couplings. It protects plug (male half) from d...

View full details
$ 190.00
$ 190.00 - $ 190.00
$ 190.00
$ 152.00
$ 152.00 - $ 152.00
$ 152.00
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 %
$ 552.00
$ 552.00 - $ 552.00
$ 552.00
$ 443.00
$ 443.00 - $ 443.00
$ 443.00

Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" 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 BLH1B is a brass 1/8" coupler in the FHK ...

View full details
$ 552.00
$ 552.00 - $ 552.00
$ 552.00
$ 443.00
$ 443.00 - $ 443.00
$ 443.00
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 %
$ 549.00
$ 549.00 - $ 549.00
$ 549.00
$ 439.00
$ 439.00 - $ 439.00
$ 439.00

Foster BLH1S, 1/8" ISO-B Hydraulic Coupler x 1/8" 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 BLH1S is a steel 1/8" coupler in the FHK ...

View full details
$ 549.00
$ 549.00 - $ 549.00
$ 549.00
$ 439.00
$ 439.00 - $ 439.00
$ 439.00
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 %
$ 1,370.00
$ 1,370.00 - $ 1,370.00
$ 1,370.00
$ 1,095.00
$ 1,095.00 - $ 1,095.00
$ 1,095.00

Foster BLH1S/S, 1/8" ISO-B Hydraulic Coupler x 1/8" 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 BLH1S/S is a 303 stainless 1/8" coupler i...

View full details
$ 1,370.00
$ 1,370.00 - $ 1,370.00
$ 1,370.00
$ 1,095.00
$ 1,095.00 - $ 1,095.00
$ 1,095.00
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 %
$ 616.00
$ 616.00 - $ 616.00
$ 616.00
$ 492.00
$ 492.00 - $ 492.00
$ 492.00

Foster BLH1S4, 1/8" ISO-B Hydraulic Coupler x 7/16"-20 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 BLH1S4 is a steel 1/8" coupler in the FHK...

View full details
$ 616.00
$ 616.00 - $ 616.00
$ 616.00
$ 492.00
$ 492.00 - $ 492.00
$ 492.00
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 %
$ 672.00
$ 672.00 - $ 672.00
$ 672.00
$ 538.00
$ 538.00 - $ 538.00
$ 538.00

Foster BLH2B, 1/4" ISO-B Hydraulic Coupler x 1/4" 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 BLH2B is a brass 1/4" coupler in the FHK ...

View full details
$ 672.00
$ 672.00 - $ 672.00
$ 672.00
$ 538.00
$ 538.00 - $ 538.00
$ 538.00
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 %
$ 581.00
$ 581.00 - $ 581.00
$ 581.00
$ 467.00
$ 467.00 - $ 467.00
$ 467.00

Foster BLH2S, 1/4" ISO-B Hydraulic Coupler x 1/4" 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 BLH2S is a steel 1/4" coupler in the FHK ...

View full details
$ 581.00
$ 581.00 - $ 581.00
$ 581.00
$ 467.00
$ 467.00 - $ 467.00
$ 467.00
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 %
$ 1,403.00
$ 1,403.00 - $ 1,403.00
$ 1,403.00
$ 1,122.00
$ 1,122.00 - $ 1,122.00
$ 1,122.00

Foster BLH2S/S, 1/4" ISO-B Hydraulic Coupler x 1/4" 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 BLH2S/S is a 303 stainless 1/4" coupler i...

View full details
$ 1,403.00
$ 1,403.00 - $ 1,403.00
$ 1,403.00
$ 1,122.00
$ 1,122.00 - $ 1,122.00
$ 1,122.00
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 %
$ 658.00
$ 658.00 - $ 658.00
$ 658.00
$ 527.00
$ 527.00 - $ 527.00
$ 527.00

Foster BLH2S6, 1/4" ISO-B Hydraulic Coupler x 9/16"-18 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 BLH2S6 is a steel 1/4" coupler in the FHK...

View full details
$ 658.00
$ 658.00 - $ 658.00
$ 658.00
$ 527.00
$ 527.00 - $ 527.00
$ 527.00
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 %
$ 895.00
$ 895.00 - $ 895.00
$ 895.00
$ 716.00
$ 716.00 - $ 716.00
$ 716.00

Foster BLH3B, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 BLH3B is a brass 3/8" coupler in the FHK ...

View full details
$ 895.00
$ 895.00 - $ 895.00
$ 895.00
$ 716.00
$ 716.00 - $ 716.00
$ 716.00
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 %
$ 867.00
$ 867.00 - $ 867.00
$ 867.00
$ 694.00
$ 694.00 - $ 694.00
$ 694.00

Foster BLH3S, 3/8" ISO-B Hydraulic Coupler x 3/8" 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 BLH3S is a steel 3/8" coupler in the FHK ...

View full details
$ 867.00
$ 867.00 - $ 867.00
$ 867.00
$ 694.00
$ 694.00 - $ 694.00
$ 694.00
Save 20% Save %

Request a Quote

Bulk and dealer pricing. Tell us what you need and we’ll reply within one business day.