Foster FST Series Couplers (Straight-Thru)
Foster FST Series full-flow straight-through hydraulic couplers and plugs — no valve in either half, so the inside diameter matches the nominal pipe for maximum flow. Standard Industrial Interchange with manual sleeve connection, body sizes 1/8" to 1-1/2". Brass, steel, and 303 stainless; ball-lock option available. Note: lines do not self-seal on disconnect.
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Original price $ 474.00Original price $ 474.00 - Original price $ 474.00Original price $ 474.00Current price $ 378.00$ 378.00 - $ 378.00Current price $ 378.00
Foster 100FP, 1" Straight-Thru Plug x 1" Female NPT, FST Series, Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 100FP is a steel 1" plug from the FST Straight-Thru Series - with NO valve in...
View full detailsOriginal price $ 474.00Original price $ 474.00 - Original price $ 474.00Original price $ 474.00Current price $ 378.00$ 378.00 - $ 378.00Current price $ 378.00Save 20% -
Original price $ 506.00Original price $ 506.00 - Original price $ 506.00Original price $ 506.00Current price $ 405.00$ 405.00 - $ 405.00Current price $ 405.00
Foster 100FPB, 1" Straight-Thru Plug x 1" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 100FPB is a brass 1" plug from the FST Straight-Thru Series - with NO valve i...
View full detailsOriginal price $ 506.00Original price $ 506.00 - Original price $ 506.00Original price $ 506.00Current price $ 405.00$ 405.00 - $ 405.00Current price $ 405.00Save 20% -
Original price $ 1,491.00Original price $ 1,491.00 - Original price $ 1,491.00Original price $ 1,491.00Current price $ 1,193.00$ 1,193.00 - $ 1,193.00Current price $ 1,193.00
Foster 100FPS, 1" Straight-Thru Plug x 1" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 100FPS is a 303 stainless steel 1" plug from the FST Straight-Thru Series - w...
View full detailsOriginal price $ 1,491.00Original price $ 1,491.00 - Original price $ 1,491.00Original price $ 1,491.00Current price $ 1,193.00$ 1,193.00 - $ 1,193.00Current price $ 1,193.00Save 20% -
Original price $ 829.00Original price $ 829.00 - Original price $ 829.00Original price $ 829.00Current price $ 664.00$ 664.00 - $ 664.00Current price $ 664.00
Foster 100FS, 1" Straight-Thru Coupler x 1" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 100FS is a brass 1" coupler from the FST Straight-Thru Series - with NO valve...
View full detailsOriginal price $ 829.00Original price $ 829.00 - Original price $ 829.00Original price $ 829.00Current price $ 664.00$ 664.00 - $ 664.00Current price $ 664.00Save 20% -
Original price $ 1,000.00Original price $ 1,000.00 - Original price $ 1,000.00Original price $ 1,000.00Current price $ 799.00$ 799.00 - $ 799.00Current price $ 799.00
Foster 100FS-101, 1" Straight-Thru Coupler x 1" Female NPT, FST Series, Viton Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 100FS-101 is a brass 1" coupler from the FST Straight-Thru Series - with NO v...
View full detailsOriginal price $ 1,000.00Original price $ 1,000.00 - Original price $ 1,000.00Original price $ 1,000.00Current price $ 799.00$ 799.00 - $ 799.00Current price $ 799.00Save 20% -
Original price $ 3,114.00Original price $ 3,114.00 - Original price $ 3,114.00Original price $ 3,114.00Current price $ 2,492.00$ 2,492.00 - $ 2,492.00Current price $ 2,492.00
Foster 100FSS, 1" Straight-Thru Coupler x 1" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 100FSS is a 303 stainless steel 1" coupler from the FST Straight-Thru Series ...
View full detailsOriginal price $ 3,114.00Original price $ 3,114.00 - Original price $ 3,114.00Original price $ 3,114.00Current price $ 2,492.00$ 2,492.00 - $ 2,492.00Current price $ 2,492.00Save 20% -
Original price $ 1,356.00Original price $ 1,356.00 - Original price $ 1,356.00Original price $ 1,356.00Current price $ 1,085.00$ 1,085.00 - $ 1,085.00Current price $ 1,085.00
Foster 125FP, 1-1/4" Straight-Thru Plug x 1-1/4" Female NPT, FST Series, Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 125FP is a steel 1-1/4" plug from the FST Straight-Thru Series - with NO valv...
View full detailsOriginal price $ 1,356.00Original price $ 1,356.00 - Original price $ 1,356.00Original price $ 1,356.00Current price $ 1,085.00$ 1,085.00 - $ 1,085.00Current price $ 1,085.00Save 20% -
Original price $ 1,514.00Original price $ 1,514.00 - Original price $ 1,514.00Original price $ 1,514.00Current price $ 1,213.00$ 1,213.00 - $ 1,213.00Current price $ 1,213.00
Foster 125FPB, 1-1/4" Straight-Thru Plug x 1-1/4" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 125FPB is a brass 1-1/4" plug from the FST Straight-Thru Series - with NO val...
View full detailsOriginal price $ 1,514.00Original price $ 1,514.00 - Original price $ 1,514.00Original price $ 1,514.00Current price $ 1,213.00$ 1,213.00 - $ 1,213.00Current price $ 1,213.00Save 20% -
Original price $ 2,535.00Original price $ 2,535.00 - Original price $ 2,535.00Original price $ 2,535.00Current price $ 2,029.00$ 2,029.00 - $ 2,029.00Current price $ 2,029.00
Foster 125FS, 1-1/4" Straight-Thru Coupler x 1-1/4" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 125FS is a brass 1-1/4" coupler from the FST Straight-Thru Series - with NO v...
View full detailsOriginal price $ 2,535.00Original price $ 2,535.00 - Original price $ 2,535.00Original price $ 2,535.00Current price $ 2,029.00$ 2,029.00 - $ 2,029.00Current price $ 2,029.00Save 20% -
Original price $ 2,665.00Original price $ 2,665.00 - Original price $ 2,665.00Original price $ 2,665.00Current price $ 2,132.00$ 2,132.00 - $ 2,132.00Current price $ 2,132.00
Foster 125FS-103, 1-1/4" Straight-Thru Coupler x 1-1/4" Female NPT, FST Series, EPDM Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 125FS-103 is a brass 1-1/4" coupler from the FST Straight-Thru Series - with ...
View full detailsOriginal price $ 2,665.00Original price $ 2,665.00 - Original price $ 2,665.00Original price $ 2,665.00Current price $ 2,132.00$ 2,132.00 - $ 2,132.00Current price $ 2,132.00Save 20% -
Original price $ 82.00Original price $ 82.00 - Original price $ 82.00Original price $ 82.00Current price $ 64.00$ 64.00 - $ 64.00Current price $ 64.00
Foster 12FPB, 1/8" Straight-Thru Plug x 1/8" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 12FPB is a brass 1/8" plug from the FST Straight-Thru Series - with NO valve ...
View full detailsOriginal price $ 82.00Original price $ 82.00 - Original price $ 82.00Original price $ 82.00Current price $ 64.00$ 64.00 - $ 64.00Current price $ 64.00Save 22% -
Original price $ 320.00Original price $ 320.00 - Original price $ 320.00Original price $ 320.00Current price $ 256.00$ 256.00 - $ 256.00Current price $ 256.00
Foster 12FPS, 1/8" Straight-Thru Plug x 1/8" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 12FPS is a 303 stainless steel 1/8" plug from the FST Straight-Thru Series - ...
View full detailsOriginal price $ 320.00Original price $ 320.00 - Original price $ 320.00Original price $ 320.00Current price $ 256.00$ 256.00 - $ 256.00Current price $ 256.00Save 20% -
Original price $ 197.00Original price $ 197.00 - Original price $ 197.00Original price $ 197.00Current price $ 158.00$ 158.00 - $ 158.00Current price $ 158.00
Foster 12FS, 1/8" Straight-Thru Coupler x 1/8" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 12FS is a brass 1/8" coupler from the FST Straight-Thru Series - with NO valv...
View full detailsOriginal price $ 197.00Original price $ 197.00 - Original price $ 197.00Original price $ 197.00Current price $ 158.00$ 158.00 - $ 158.00Current price $ 158.00Save 20% -
Original price $ 243.00Original price $ 243.00 - Original price $ 243.00Original price $ 243.00Current price $ 196.00$ 196.00 - $ 196.00Current price $ 196.00
Foster 12FS-101, 1/8" Straight-Thru Coupler x 1/8" Female NPT, FST Series, Viton Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 12FS-101 is a brass 1/8" coupler from the FST Straight-Thru Series - with NO ...
View full detailsOriginal price $ 243.00Original price $ 243.00 - Original price $ 243.00Original price $ 243.00Current price $ 196.00$ 196.00 - $ 196.00Current price $ 196.00Save 19% -
Original price $ 687.00Original price $ 687.00 - Original price $ 687.00Original price $ 687.00Current price $ 549.00$ 549.00 - $ 549.00Current price $ 549.00
Foster 12FSS, 1/8" Straight-Thru Coupler x 1/8" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 12FSS is a 303 stainless steel 1/8" coupler from the FST Straight-Thru Series...
View full detailsOriginal price $ 687.00Original price $ 687.00 - Original price $ 687.00Original price $ 687.00Current price $ 549.00$ 549.00 - $ 549.00Current price $ 549.00Save 20% -
Original price $ 733.00Original price $ 733.00 - Original price $ 733.00Original price $ 733.00Current price $ 588.00$ 588.00 - $ 588.00Current price $ 588.00
Foster 12FSS-101, 1/8" Straight-Thru Coupler x 1/8" Female NPT, FST Series, Viton Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 12FSS-101 is a 303 stainless steel 1/8" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 733.00Original price $ 733.00 - Original price $ 733.00Original price $ 733.00Current price $ 588.00$ 588.00 - $ 588.00Current price $ 588.00Save 20% -
Original price $ 728.00Original price $ 728.00 - Original price $ 728.00Original price $ 728.00Current price $ 583.00$ 583.00 - $ 583.00Current price $ 583.00
Foster 12FSS-103, 1/8" Straight-Thru Coupler x 1/8" Female NPT, FST Series, EPDM Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 12FSS-103 is a 303 stainless steel 1/8" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 728.00Original price $ 728.00 - Original price $ 728.00Original price $ 728.00Current price $ 583.00$ 583.00 - $ 583.00Current price $ 583.00Save 20% -
Original price $ 1,390.00Original price $ 1,390.00 - Original price $ 1,390.00Original price $ 1,390.00Current price $ 1,111.00$ 1,111.00 - $ 1,111.00Current price $ 1,111.00
Foster 150FP, 1-1/2" Straight-Thru Plug x 1-1/2" Female NPT, FST Series, Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 150FP is a steel 1-1/2" plug from the FST Straight-Thru Series - with NO valv...
View full detailsOriginal price $ 1,390.00Original price $ 1,390.00 - Original price $ 1,390.00Original price $ 1,390.00Current price $ 1,111.00$ 1,111.00 - $ 1,111.00Current price $ 1,111.00Save 20% -
Original price $ 1,798.00Original price $ 1,798.00 - Original price $ 1,798.00Original price $ 1,798.00Current price $ 1,438.00$ 1,438.00 - $ 1,438.00Current price $ 1,438.00
Foster 150FPB, 1-1/2" Straight-Thru Plug x 1-1/2" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 150FPB is a brass 1-1/2" plug from the FST Straight-Thru Series - with NO val...
View full detailsOriginal price $ 1,798.00Original price $ 1,798.00 - Original price $ 1,798.00Original price $ 1,798.00Current price $ 1,438.00$ 1,438.00 - $ 1,438.00Current price $ 1,438.00Save 20% -
Original price $ 4,967.00Original price $ 4,967.00 - Original price $ 4,967.00Original price $ 4,967.00Current price $ 3,975.00$ 3,975.00 - $ 3,975.00Current price $ 3,975.00
Foster 150FS, 1-1/2" Straight-Thru Coupler x 1-1/2" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 150FS is a brass 1-1/2" coupler from the FST Straight-Thru Series - with NO v...
View full detailsOriginal price $ 4,967.00Original price $ 4,967.00 - Original price $ 4,967.00Original price $ 4,967.00Current price $ 3,975.00$ 3,975.00 - $ 3,975.00Current price $ 3,975.00Save 20% -
Original price $ 84.00Original price $ 84.00 - Original price $ 84.00Original price $ 84.00Current price $ 68.00$ 68.00 - $ 68.00Current price $ 68.00
Foster 25FP, 1/4" Straight-Thru Plug x 1/4" Female NPT, FST Series, Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 25FP is a steel 1/4" plug from the FST Straight-Thru Series - with NO valve i...
View full detailsOriginal price $ 84.00Original price $ 84.00 - Original price $ 84.00Original price $ 84.00Current price $ 68.00$ 68.00 - $ 68.00Current price $ 68.00Save 19% -
Original price $ 109.00Original price $ 109.00 - Original price $ 109.00Original price $ 109.00Current price $ 87.00$ 87.00 - $ 87.00Current price $ 87.00
Foster 25FPB, 1/4" Straight-Thru Plug x 1/4" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 25FPB is a brass 1/4" plug from the FST Straight-Thru Series - with NO valve ...
View full detailsOriginal price $ 109.00Original price $ 109.00 - Original price $ 109.00Original price $ 109.00Current price $ 87.00$ 87.00 - $ 87.00Current price $ 87.00Save 20% -
Original price $ 370.00Original price $ 370.00 - Original price $ 370.00Original price $ 370.00Current price $ 297.00$ 297.00 - $ 297.00Current price $ 297.00
Foster 25FPS, 1/4" Straight-Thru Plug x 1/4" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 25FPS is a 303 stainless steel 1/4" plug from the FST Straight-Thru Series - ...
View full detailsOriginal price $ 370.00Original price $ 370.00 - Original price $ 370.00Original price $ 370.00Current price $ 297.00$ 297.00 - $ 297.00Current price $ 297.00Save 20% -
Original price $ 233.00Original price $ 233.00 - Original price $ 233.00Original price $ 233.00Current price $ 185.00$ 185.00 - $ 185.00Current price $ 185.00
Foster 25FS, 1/4" Straight-Thru Coupler x 1/4" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 25FS is a brass 1/4" coupler from the FST Straight-Thru Series - with NO valv...
View full detailsOriginal price $ 233.00Original price $ 233.00 - Original price $ 233.00Original price $ 233.00Current price $ 185.00$ 185.00 - $ 185.00Current price $ 185.00Save 21%
