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 $ 16.29Original price $ 16.29 - Original price $ 16.29Original price $ 16.29Current price $ 12.99$ 12.99 - $ 12.99Current price $ 12.99
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 $ 16.29Original price $ 16.29 - Original price $ 16.29Original price $ 16.29Current price $ 12.99$ 12.99 - $ 12.99Current price $ 12.99Save 20% -
Original price $ 64.49Original price $ 64.49 - Original price $ 64.49Original price $ 64.49Current price $ 51.59$ 51.59 - $ 51.59Current price $ 51.59
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 $ 64.49Original price $ 64.49 - Original price $ 64.49Original price $ 64.49Current price $ 51.59$ 51.59 - $ 51.59Current price $ 51.59Save 20% -
Original price $ 67.79Original price $ 67.79 - Original price $ 67.79Original price $ 67.79Current price $ 54.29$ 54.29 - $ 54.29Current price $ 54.29
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 $ 67.79Original price $ 67.79 - Original price $ 67.79Original price $ 67.79Current price $ 54.29$ 54.29 - $ 54.29Current price $ 54.29Save 20% -
Original price $ 67.49Original price $ 67.49 - Original price $ 67.49Original price $ 67.49Current price $ 53.99$ 53.99 - $ 53.99Current price $ 53.99
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 $ 67.49Original price $ 67.49 - Original price $ 67.49Original price $ 67.49Current price $ 53.99$ 53.99 - $ 53.99Current price $ 53.99Save 20% -
Original price $ 8.89Original price $ 8.89 - Original price $ 8.89Original price $ 8.89Current price $ 7.09$ 7.09 - $ 7.09Current price $ 7.09
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 $ 8.89Original price $ 8.89 - Original price $ 8.89Original price $ 8.89Current price $ 7.09$ 7.09 - $ 7.09Current price $ 7.09Save 20% -
Original price $ 5.69Original price $ 5.69 - Original price $ 5.69Original price $ 5.69Current price $ 4.49$ 4.49 - $ 4.49Current price $ 4.49
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 $ 5.69Original price $ 5.69 - Original price $ 5.69Original price $ 5.69Current price $ 4.49$ 4.49 - $ 4.49Current price $ 4.49Save 21% -
Original price $ 7.09Original price $ 7.09 - Original price $ 7.09Original price $ 7.09Current price $ 5.59$ 5.59 - $ 5.59Current price $ 5.59
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 $ 7.09Original price $ 7.09 - Original price $ 7.09Original price $ 7.09Current price $ 5.59$ 5.59 - $ 5.59Current price $ 5.59Save 21% -
Original price $ 26.19Original price $ 26.19 - Original price $ 26.19Original price $ 26.19Current price $ 20.99$ 20.99 - $ 20.99Current price $ 20.99
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 $ 26.19Original price $ 26.19 - Original price $ 26.19Original price $ 26.19Current price $ 20.99$ 20.99 - $ 20.99Current price $ 20.99Save 20% -
Original price $ 15.79Original price $ 15.79 - Original price $ 15.79Original price $ 15.79Current price $ 12.69$ 12.69 - $ 12.69Current price $ 12.69
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 $ 15.79Original price $ 15.79 - Original price $ 15.79Original price $ 15.79Current price $ 12.69$ 12.69 - $ 12.69Current price $ 12.69Save 20% -
Original price $ 19.19Original price $ 19.19 - Original price $ 19.19Original price $ 19.19Current price $ 15.29$ 15.29 - $ 15.29Current price $ 15.29
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 $ 19.19Original price $ 19.19 - Original price $ 19.19Original price $ 19.19Current price $ 15.29$ 15.29 - $ 15.29Current price $ 15.29Save 20% -
Original price $ 18.39Original price $ 18.39 - Original price $ 18.39Original price $ 18.39Current price $ 14.69$ 14.69 - $ 14.69Current price $ 14.69
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 $ 18.39Original price $ 18.39 - Original price $ 18.39Original price $ 18.39Current price $ 14.69$ 14.69 - $ 14.69Current price $ 14.69Save 20% -
Original price $ 70.79Original price $ 70.79 - Original price $ 70.79Original price $ 70.79Current price $ 56.59$ 56.59 - $ 56.59Current price $ 56.59
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 $ 70.79Original price $ 70.79 - Original price $ 70.79Original price $ 70.79Current price $ 56.59$ 56.59 - $ 56.59Current price $ 56.59Save 20% -
Original price $ 71.29Original price $ 71.29 - Original price $ 71.29Original price $ 71.29Current price $ 56.99$ 56.99 - $ 56.99Current price $ 56.99
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 $ 71.29Original price $ 71.29 - Original price $ 71.29Original price $ 71.29Current price $ 56.99$ 56.99 - $ 56.99Current price $ 56.99Save 20% -
Original price $ 70.89Original price $ 70.89 - Original price $ 70.89Original price $ 70.89Current price $ 56.69$ 56.69 - $ 56.69Current price $ 56.69
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 $ 70.89Original price $ 70.89 - Original price $ 70.89Original price $ 70.89Current price $ 56.69$ 56.69 - $ 56.69Current price $ 56.69Save 20% -
Original price $ 8.79Original price $ 8.79 - Original price $ 8.79Original price $ 8.79Current price $ 7.09$ 7.09 - $ 7.09Current price $ 7.09
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 $ 8.79Original price $ 8.79 - Original price $ 8.79Original price $ 8.79Current price $ 7.09$ 7.09 - $ 7.09Current price $ 7.09Save 19% -
Original price $ 8.89Original price $ 8.89 - Original price $ 8.89Original price $ 8.89Current price $ 7.09$ 7.09 - $ 7.09Current price $ 7.09
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 $ 8.89Original price $ 8.89 - Original price $ 8.89Original price $ 8.89Current price $ 7.09$ 7.09 - $ 7.09Current price $ 7.09Save 20% -
Original price $ 8.29Original price $ 8.29 - Original price $ 8.29Original price $ 8.29Current price $ 6.59$ 6.59 - $ 6.59Current price $ 6.59
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 $ 8.29Original price $ 8.29 - Original price $ 8.29Original price $ 8.29Current price $ 6.59$ 6.59 - $ 6.59Current price $ 6.59Save 21% -
Original price $ 35.29Original price $ 35.29 - Original price $ 35.29Original price $ 35.29Current price $ 28.19$ 28.19 - $ 28.19Current price $ 28.19
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 $ 35.29Original price $ 35.29 - Original price $ 35.29Original price $ 35.29Current price $ 28.19$ 28.19 - $ 28.19Current price $ 28.19Save 20% -
Original price $ 22.19Original price $ 22.19 - Original price $ 22.19Original price $ 22.19Current price $ 17.79$ 17.79 - $ 17.79Current price $ 17.79
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 $ 22.19Original price $ 22.19 - Original price $ 22.19Original price $ 22.19Current price $ 17.79$ 17.79 - $ 17.79Current price $ 17.79Save 20% -
Original price $ 25.19Original price $ 25.19 - Original price $ 25.19Original price $ 25.19Current price $ 20.19$ 20.19 - $ 20.19Current price $ 20.19
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 $ 25.19Original price $ 25.19 - Original price $ 25.19Original price $ 25.19Current price $ 20.19$ 20.19 - $ 20.19Current price $ 20.19Save 20% -
Original price $ 24.79Original price $ 24.79 - Original price $ 24.79Original price $ 24.79Current price $ 19.89$ 19.89 - $ 19.89Current price $ 19.89
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 $ 24.79Original price $ 24.79 - Original price $ 24.79Original price $ 24.79Current price $ 19.89$ 19.89 - $ 19.89Current price $ 19.89Save 20% -
Original price $ 77.99Original price $ 77.99 - Original price $ 77.99Original price $ 77.99Current price $ 62.39$ 62.39 - $ 62.39Current price $ 62.39
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 $ 77.99Original price $ 77.99 - Original price $ 77.99Original price $ 77.99Current price $ 62.39$ 62.39 - $ 62.39Current price $ 62.39Save 20% -
Original price $ 80.79Original price $ 80.79 - Original price $ 80.79Original price $ 80.79Current price $ 64.69$ 64.69 - $ 64.69Current price $ 64.69
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 $ 80.79Original price $ 80.79 - Original price $ 80.79Original price $ 80.79Current price $ 64.69$ 64.69 - $ 64.69Current price $ 64.69Save 20% -
Original price $ 82.19Original price $ 82.19 - Original price $ 82.19Original price $ 82.19Current price $ 65.79$ 65.79 - $ 65.79Current price $ 65.79
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 $ 82.19Original price $ 82.19 - Original price $ 82.19Original price $ 82.19Current price $ 65.79$ 65.79 - $ 65.79Current price $ 65.79Save 20%
