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 $ 290.00Original price $ 290.00 - Original price $ 290.00Original price $ 290.00Current price $ 231.00$ 231.00 - $ 231.00Current price $ 231.00
Foster 25FS-101, 1/4" Straight-Thru Coupler x 1/4" Female NPT, FST Series, Viton Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 25FS-101 is a brass 1/4" coupler from the FST Straight-Thru Series - with NO ...
View full detailsOriginal price $ 290.00Original price $ 290.00 - Original price $ 290.00Original price $ 290.00Current price $ 231.00$ 231.00 - $ 231.00Current price $ 231.00Save 20% -
Original price $ 1,147.00Original price $ 1,147.00 - Original price $ 1,147.00Original price $ 1,147.00Current price $ 918.00$ 918.00 - $ 918.00Current price $ 918.00
Foster 25FSS, 1/4" Straight-Thru Coupler x 1/4" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 25FSS is a 303 stainless steel 1/4" coupler from the FST Straight-Thru Series...
View full detailsOriginal price $ 1,147.00Original price $ 1,147.00 - Original price $ 1,147.00Original price $ 1,147.00Current price $ 918.00$ 918.00 - $ 918.00Current price $ 918.00Save 20% -
Original price $ 1,206.00Original price $ 1,206.00 - Original price $ 1,206.00Original price $ 1,206.00Current price $ 966.00$ 966.00 - $ 966.00Current price $ 966.00
Foster 25FSS-101, 1/4" Straight-Thru Coupler x 1/4" Female NPT, FST Series, Viton Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 25FSS-101 is a 303 stainless steel 1/4" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 1,206.00Original price $ 1,206.00 - Original price $ 1,206.00Original price $ 1,206.00Current price $ 966.00$ 966.00 - $ 966.00Current price $ 966.00Save 20% -
Original price $ 1,200.00Original price $ 1,200.00 - Original price $ 1,200.00Original price $ 1,200.00Current price $ 960.00$ 960.00 - $ 960.00Current price $ 960.00
Foster 25FSS-103, 1/4" Straight-Thru Coupler x 1/4" Female NPT, FST Series, EPDM Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 25FSS-103 is a 303 stainless steel 1/4" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 1,200.00Original price $ 1,200.00 - Original price $ 1,200.00Original price $ 1,200.00Current price $ 960.00$ 960.00 - $ 960.00Current price $ 960.00Save 20% -
Original price $ 159.00Original price $ 159.00 - Original price $ 159.00Original price $ 159.00Current price $ 127.00$ 127.00 - $ 127.00Current price $ 127.00
Foster 25HP, 1/4" Straight-Thru Plug x 1/4" Hose ID, FST Series, Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 25HP is a steel 1/4" plug from the FST Straight-Thru Series - with NO valve i...
View full detailsOriginal price $ 159.00Original price $ 159.00 - Original price $ 159.00Original price $ 159.00Current price $ 127.00$ 127.00 - $ 127.00Current price $ 127.00Save 20% -
Original price $ 102.00Original price $ 102.00 - Original price $ 102.00Original price $ 102.00Current price $ 80.00$ 80.00 - $ 80.00Current price $ 80.00
Foster 38FP, 3/8" Straight-Thru Plug x 3/8" Female NPT, FST Series, Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38FP is a steel 3/8" plug from the FST Straight-Thru Series - with NO valve i...
View full detailsOriginal price $ 102.00Original price $ 102.00 - Original price $ 102.00Original price $ 102.00Current price $ 80.00$ 80.00 - $ 80.00Current price $ 80.00Save 22% -
Original price $ 127.00Original price $ 127.00 - Original price $ 127.00Original price $ 127.00Current price $ 100.00$ 100.00 - $ 100.00Current price $ 100.00
Foster 38FPB, 3/8" Straight-Thru Plug x 3/8" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38FPB is a brass 3/8" plug from the FST Straight-Thru Series - with NO valve ...
View full detailsOriginal price $ 127.00Original price $ 127.00 - Original price $ 127.00Original price $ 127.00Current price $ 100.00$ 100.00 - $ 100.00Current price $ 100.00Save 21% -
Original price $ 466.00Original price $ 466.00 - Original price $ 466.00Original price $ 466.00Current price $ 374.00$ 374.00 - $ 374.00Current price $ 374.00
Foster 38FPS, 3/8" Straight-Thru Plug x 3/8" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38FPS is a 303 stainless steel 3/8" plug from the FST Straight-Thru Series - ...
View full detailsOriginal price $ 466.00Original price $ 466.00 - Original price $ 466.00Original price $ 466.00Current price $ 374.00$ 374.00 - $ 374.00Current price $ 374.00Save 20% -
Original price $ 281.00Original price $ 281.00 - Original price $ 281.00Original price $ 281.00Current price $ 226.00$ 226.00 - $ 226.00Current price $ 226.00
Foster 38FS, 3/8" Straight-Thru Coupler x 3/8" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38FS is a brass 3/8" coupler from the FST Straight-Thru Series - with NO valv...
View full detailsOriginal price $ 281.00Original price $ 281.00 - Original price $ 281.00Original price $ 281.00Current price $ 226.00$ 226.00 - $ 226.00Current price $ 226.00Save 20% -
Original price $ 342.00Original price $ 342.00 - Original price $ 342.00Original price $ 342.00Current price $ 272.00$ 272.00 - $ 272.00Current price $ 272.00
Foster 38FS-101, 3/8" Straight-Thru Coupler x 3/8" Female NPT, FST Series, Viton Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38FS-101 is a brass 3/8" coupler from the FST Straight-Thru Series - with NO ...
View full detailsOriginal price $ 342.00Original price $ 342.00 - Original price $ 342.00Original price $ 342.00Current price $ 272.00$ 272.00 - $ 272.00Current price $ 272.00Save 20% -
Original price $ 327.00Original price $ 327.00 - Original price $ 327.00Original price $ 327.00Current price $ 262.00$ 262.00 - $ 262.00Current price $ 262.00
Foster 38FS-103, 3/8" Straight-Thru Coupler x 3/8" Female NPT, FST Series, EPDM Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38FS-103 is a brass 3/8" coupler from the FST Straight-Thru Series - with NO ...
View full detailsOriginal price $ 327.00Original price $ 327.00 - Original price $ 327.00Original price $ 327.00Current price $ 262.00$ 262.00 - $ 262.00Current price $ 262.00Save 20% -
Original price $ 1,259.00Original price $ 1,259.00 - Original price $ 1,259.00Original price $ 1,259.00Current price $ 1,007.00$ 1,007.00 - $ 1,007.00Current price $ 1,007.00
Foster 38FSS, 3/8" Straight-Thru Coupler x 3/8" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38FSS is a 303 stainless steel 3/8" coupler from the FST Straight-Thru Series...
View full detailsOriginal price $ 1,259.00Original price $ 1,259.00 - Original price $ 1,259.00Original price $ 1,259.00Current price $ 1,007.00$ 1,007.00 - $ 1,007.00Current price $ 1,007.00Save 20% -
Original price $ 1,268.00Original price $ 1,268.00 - Original price $ 1,268.00Original price $ 1,268.00Current price $ 1,014.00$ 1,014.00 - $ 1,014.00Current price $ 1,014.00
Foster 38FSS-101, 3/8" Straight-Thru Coupler x 3/8" Female NPT, FST Series, Viton Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38FSS-101 is a 303 stainless steel 3/8" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 1,268.00Original price $ 1,268.00 - Original price $ 1,268.00Original price $ 1,268.00Current price $ 1,014.00$ 1,014.00 - $ 1,014.00Current price $ 1,014.00Save 20% -
Original price $ 1,261.00Original price $ 1,261.00 - Original price $ 1,261.00Original price $ 1,261.00Current price $ 1,008.00$ 1,008.00 - $ 1,008.00Current price $ 1,008.00
Foster 38FSS-103, 3/8" Straight-Thru Coupler x 3/8" Female NPT, FST Series, EPDM Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38FSS-103 is a 303 stainless steel 3/8" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 1,261.00Original price $ 1,261.00 - Original price $ 1,261.00Original price $ 1,261.00Current price $ 1,008.00$ 1,008.00 - $ 1,008.00Current price $ 1,008.00Save 20% -
Original price $ 157.00Original price $ 157.00 - Original price $ 157.00Original price $ 157.00Current price $ 127.00$ 127.00 - $ 127.00Current price $ 127.00
Foster 38HPB, 3/8" Straight-Thru Plug x 3/8" Hose ID, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 38HPB is a brass 3/8" plug from the FST Straight-Thru Series - with NO valve ...
View full detailsOriginal price $ 157.00Original price $ 157.00 - Original price $ 157.00Original price $ 157.00Current price $ 127.00$ 127.00 - $ 127.00Current price $ 127.00Save 19% -
Original price $ 159.00Original price $ 159.00 - Original price $ 159.00Original price $ 159.00Current price $ 127.00$ 127.00 - $ 127.00Current price $ 127.00
Foster 50FP, 1/2" Straight-Thru Plug x 1/2" Female NPT, FST Series, Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 50FP is a steel 1/2" plug from the FST Straight-Thru Series - with NO valve i...
View full detailsOriginal price $ 159.00Original price $ 159.00 - Original price $ 159.00Original price $ 159.00Current price $ 127.00$ 127.00 - $ 127.00Current price $ 127.00Save 20% -
Original price $ 148.00Original price $ 148.00 - Original price $ 148.00Original price $ 148.00Current price $ 118.00$ 118.00 - $ 118.00Current price $ 118.00
Foster 50FPB, 1/2" Straight-Thru Plug x 1/2" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 50FPB is a brass 1/2" plug from the FST Straight-Thru Series - with NO valve ...
View full detailsOriginal price $ 148.00Original price $ 148.00 - Original price $ 148.00Original price $ 148.00Current price $ 118.00$ 118.00 - $ 118.00Current price $ 118.00Save 20% -
Original price $ 628.00Original price $ 628.00 - Original price $ 628.00Original price $ 628.00Current price $ 502.00$ 502.00 - $ 502.00Current price $ 502.00
Foster 50FPS, 1/2" Straight-Thru Plug x 1/2" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 50FPS is a 303 stainless steel 1/2" plug from the FST Straight-Thru Series - ...
View full detailsOriginal price $ 628.00Original price $ 628.00 - Original price $ 628.00Original price $ 628.00Current price $ 502.00$ 502.00 - $ 502.00Current price $ 502.00Save 20% -
Original price $ 395.00Original price $ 395.00 - Original price $ 395.00Original price $ 395.00Current price $ 317.00$ 317.00 - $ 317.00Current price $ 317.00
Foster 50FS, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 50FS is a brass 1/2" coupler from the FST Straight-Thru Series - with NO valv...
View full detailsOriginal price $ 395.00Original price $ 395.00 - Original price $ 395.00Original price $ 395.00Current price $ 317.00$ 317.00 - $ 317.00Current price $ 317.00Save 20% -
Original price $ 448.00Original price $ 448.00 - Original price $ 448.00Original price $ 448.00Current price $ 359.00$ 359.00 - $ 359.00Current price $ 359.00
Foster 50FS-101, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, Viton Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 50FS-101 is a brass 1/2" coupler from the FST Straight-Thru Series - with NO ...
View full detailsOriginal price $ 448.00Original price $ 448.00 - Original price $ 448.00Original price $ 448.00Current price $ 359.00$ 359.00 - $ 359.00Current price $ 359.00Save 20% -
Original price $ 441.00Original price $ 441.00 - Original price $ 441.00Original price $ 441.00Current price $ 354.00$ 354.00 - $ 354.00Current price $ 354.00
Foster 50FS-103, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, EPDM Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 50FS-103 is a brass 1/2" coupler from the FST Straight-Thru Series - with NO ...
View full detailsOriginal price $ 441.00Original price $ 441.00 - Original price $ 441.00Original price $ 441.00Current price $ 354.00$ 354.00 - $ 354.00Current price $ 354.00Save 20% -
Original price $ 1,387.00Original price $ 1,387.00 - Original price $ 1,387.00Original price $ 1,387.00Current price $ 1,110.00$ 1,110.00 - $ 1,110.00Current price $ 1,110.00
Foster 50FSS, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 50FSS is a 303 stainless steel 1/2" coupler from the FST Straight-Thru Series...
View full detailsOriginal price $ 1,387.00Original price $ 1,387.00 - Original price $ 1,387.00Original price $ 1,387.00Current price $ 1,110.00$ 1,110.00 - $ 1,110.00Current price $ 1,110.00Save 20% -
Original price $ 1,437.00Original price $ 1,437.00 - Original price $ 1,437.00Original price $ 1,437.00Current price $ 1,151.00$ 1,151.00 - $ 1,151.00Current price $ 1,151.00
Foster 50FSS-101, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, Viton Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 50FSS-101 is a 303 stainless steel 1/2" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 1,437.00Original price $ 1,437.00 - Original price $ 1,437.00Original price $ 1,437.00Current price $ 1,151.00$ 1,151.00 - $ 1,151.00Current price $ 1,151.00Save 20% -
Original price $ 1,462.00Original price $ 1,462.00 - Original price $ 1,462.00Original price $ 1,462.00Current price $ 1,170.00$ 1,170.00 - $ 1,170.00Current price $ 1,170.00
Foster 50FSS-103, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, EPDM Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 50FSS-103 is a 303 stainless steel 1/2" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 1,462.00Original price $ 1,462.00 - Original price $ 1,462.00Original price $ 1,462.00Current price $ 1,170.00$ 1,170.00 - $ 1,170.00Current price $ 1,170.00Save 20%
