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 $ 12.29Original price $ 12.29 - Original price $ 12.29Original price $ 12.29Current price $ 9.79$ 9.79 - $ 9.79Current price $ 9.79
Foster 75FP, 3/4" Straight-Thru Plug x 3/4" Female NPT, FST Series, Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FP is a steel 3/4" plug from the FST Straight-Thru Series - with NO valve i...
View full detailsOriginal price $ 12.29Original price $ 12.29 - Original price $ 12.29Original price $ 12.29Current price $ 9.79$ 9.79 - $ 9.79Current price $ 9.79Save 20% -
Original price $ 15.29Original price $ 15.29 - Original price $ 15.29Original price $ 15.29Current price $ 12.29$ 12.29 - $ 12.29Current price $ 12.29
Foster 75FPB, 3/4" Straight-Thru Plug x 3/4" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FPB is a brass 3/4" plug from the FST Straight-Thru Series - with NO valve ...
View full detailsOriginal price $ 15.29Original price $ 15.29 - Original price $ 15.29Original price $ 15.29Current price $ 12.29$ 12.29 - $ 12.29Current price $ 12.29Save 20% -
Original price $ 49.19Original price $ 49.19 - Original price $ 49.19Original price $ 49.19Current price $ 39.29$ 39.29 - $ 39.29Current price $ 39.29
Foster 75FPS, 3/4" Straight-Thru Plug x 3/4" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FPS is a 303 stainless steel 3/4" plug from the FST Straight-Thru Series - ...
View full detailsOriginal price $ 49.19Original price $ 49.19 - Original price $ 49.19Original price $ 49.19Current price $ 39.29$ 39.29 - $ 39.29Current price $ 39.29Save 20% -
Original price $ 35.59Original price $ 35.59 - Original price $ 35.59Original price $ 35.59Current price $ 28.49$ 28.49 - $ 28.49Current price $ 28.49
Foster 75FS, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FS is a brass 3/4" coupler from the FST Straight-Thru Series - with NO valv...
View full detailsOriginal price $ 35.59Original price $ 35.59 - Original price $ 35.59Original price $ 35.59Current price $ 28.49$ 28.49 - $ 28.49Current price $ 28.49Save 20% -
Original price $ 40.39Original price $ 40.39 - Original price $ 40.39Original price $ 40.39Current price $ 32.29$ 32.29 - $ 32.29Current price $ 32.29
Foster 75FS-101, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, Viton Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FS-101 is a brass 3/4" coupler from the FST Straight-Thru Series - with NO ...
View full detailsOriginal price $ 40.39Original price $ 40.39 - Original price $ 40.39Original price $ 40.39Current price $ 32.29$ 32.29 - $ 32.29Current price $ 32.29Save 20% -
Original price $ 39.69Original price $ 39.69 - Original price $ 39.69Original price $ 39.69Current price $ 31.79$ 31.79 - $ 31.79Current price $ 31.79
Foster 75FS-103, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, EPDM Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FS-103 is a brass 3/4" coupler from the FST Straight-Thru Series - with NO ...
View full detailsOriginal price $ 39.69Original price $ 39.69 - Original price $ 39.69Original price $ 39.69Current price $ 31.79$ 31.79 - $ 31.79Current price $ 31.79Save 20% -
Original price $ 41.29Original price $ 41.29 - Original price $ 41.29Original price $ 41.29Current price $ 33.09$ 33.09 - $ 33.09Current price $ 33.09
Foster 75FS-104, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, Silicone Seal, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FS-104 is a brass 3/4" coupler from the FST Straight-Thru Series - with NO ...
View full detailsOriginal price $ 41.29Original price $ 41.29 - Original price $ 41.29Original price $ 41.29Current price $ 33.09$ 33.09 - $ 33.09Current price $ 33.09Save 20% -
Original price $ 116.99Original price $ 116.99 - Original price $ 116.99Original price $ 116.99Current price $ 93.59$ 93.59 - $ 93.59Current price $ 93.59
Foster 75FSS, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FSS is a 303 stainless steel 3/4" coupler from the FST Straight-Thru Series...
View full detailsOriginal price $ 116.99Original price $ 116.99 - Original price $ 116.99Original price $ 116.99Current price $ 93.59$ 93.59 - $ 93.59Current price $ 93.59Save 20% -
Original price $ 120.69Original price $ 120.69 - Original price $ 120.69Original price $ 120.69Current price $ 96.49$ 96.49 - $ 96.49Current price $ 96.49
Foster 75FSS-101, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, Viton Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FSS-101 is a 303 stainless steel 3/4" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 120.69Original price $ 120.69 - Original price $ 120.69Original price $ 120.69Current price $ 96.49$ 96.49 - $ 96.49Current price $ 96.49Save 20% -
Original price $ 122.49Original price $ 122.49 - Original price $ 122.49Original price $ 122.49Current price $ 97.99$ 97.99 - $ 97.99Current price $ 97.99
Foster 75FSS-103, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, EPDM Seal, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75FSS-103 is a 303 stainless steel 3/4" coupler from the FST Straight-Thru Se...
View full detailsOriginal price $ 122.49Original price $ 122.49 - Original price $ 122.49Original price $ 122.49Current price $ 97.99$ 97.99 - $ 97.99Current price $ 97.99Save 20% -
Original price $ 17.39Original price $ 17.39 - Original price $ 17.39Original price $ 17.39Current price $ 13.89$ 13.89 - $ 13.89Current price $ 13.89
Foster 75HPB, 3/4" Straight-Thru Plug x 3/4" Hose ID, FST Series, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster 75HPB is a brass 3/4" plug from the FST Straight-Thru Series - with NO valve ...
View full detailsOriginal price $ 17.39Original price $ 17.39 - Original price $ 17.39Original price $ 17.39Current price $ 13.89$ 13.89 - $ 13.89Current price $ 13.89Save 20% -
Original price $ 64.79Original price $ 64.79 - Original price $ 64.79Original price $ 64.79Current price $ 51.79$ 51.79 - $ 51.79Current price $ 51.79
Foster BL100FS, 1" Straight-Thru Coupler x 1" Female NPT, FST Series, Ball Lock, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL100FS is a brass 1" coupler from the FST Straight-Thru Series - with NO val...
View full detailsOriginal price $ 64.79Original price $ 64.79 - Original price $ 64.79Original price $ 64.79Current price $ 51.79$ 51.79 - $ 51.79Current price $ 51.79Save 20% -
Original price $ 188.79Original price $ 188.79 - Original price $ 188.79Original price $ 188.79Current price $ 150.99$ 150.99 - $ 150.99Current price $ 150.99
Foster BL100FSS, 1" Straight-Thru Coupler x 1" Female NPT, FST Series, Ball Lock, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL100FSS is a 303 stainless steel 1" coupler from the FST Straight-Thru Serie...
View full detailsOriginal price $ 188.79Original price $ 188.79 - Original price $ 188.79Original price $ 188.79Current price $ 150.99$ 150.99 - $ 150.99Current price $ 150.99Save 20% -
Original price $ 173.59Original price $ 173.59 - Original price $ 173.59Original price $ 173.59Current price $ 138.89$ 138.89 - $ 138.89Current price $ 138.89
Foster BL125FS, 1-1/4" Straight-Thru Coupler x 1-1/4" Female NPT, FST Series, Ball Lock, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL125FS is a brass 1-1/4" coupler from the FST Straight-Thru Series - with NO...
View full detailsOriginal price $ 173.59Original price $ 173.59 - Original price $ 173.59Original price $ 173.59Current price $ 138.89$ 138.89 - $ 138.89Current price $ 138.89Save 20% -
Original price $ 18.49Original price $ 18.49 - Original price $ 18.49Original price $ 18.49Current price $ 14.79$ 14.79 - $ 14.79Current price $ 14.79
Foster BL12FS, 1/8" Straight-Thru Coupler x 1/8" Female NPT, FST Series, Ball Lock, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL12FS is a brass 1/8" coupler from the FST Straight-Thru Series - with NO va...
View full detailsOriginal price $ 18.49Original price $ 18.49 - Original price $ 18.49Original price $ 18.49Current price $ 14.79$ 14.79 - $ 14.79Current price $ 14.79Save 20% -
Original price $ 47.79Original price $ 47.79 - Original price $ 47.79Original price $ 47.79Current price $ 38.19$ 38.19 - $ 38.19Current price $ 38.19
Foster BL12FSS, 1/8" Straight-Thru Coupler x 1/8" Female NPT, FST Series, Ball Lock, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL12FSS is a 303 stainless steel 1/8" coupler from the FST Straight-Thru Seri...
View full detailsOriginal price $ 47.79Original price $ 47.79 - Original price $ 47.79Original price $ 47.79Current price $ 38.19$ 38.19 - $ 38.19Current price $ 38.19Save 20% -
Original price $ 301.29Original price $ 301.29 - Original price $ 301.29Original price $ 301.29Current price $ 240.99$ 240.99 - $ 240.99Current price $ 240.99
Foster BL150FS, 1-1/2" Straight-Thru Coupler x 1-1/2" Female NPT, FST Series, Ball Lock, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL150FS is a brass 1-1/2" coupler from the FST Straight-Thru Series - with NO...
View full detailsOriginal price $ 301.29Original price $ 301.29 - Original price $ 301.29Original price $ 301.29Current price $ 240.99$ 240.99 - $ 240.99Current price $ 240.99Save 20% -
Original price $ 20.59Original price $ 20.59 - Original price $ 20.59Original price $ 20.59Current price $ 16.49$ 16.49 - $ 16.49Current price $ 16.49
Foster BL25FS, 1/4" Straight-Thru Coupler x 1/4" Female NPT, FST Series, Ball Lock, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL25FS is a brass 1/4" coupler from the FST Straight-Thru Series - with NO va...
View full detailsOriginal price $ 20.59Original price $ 20.59 - Original price $ 20.59Original price $ 20.59Current price $ 16.49$ 16.49 - $ 16.49Current price $ 16.49Save 20% -
Original price $ 73.49Original price $ 73.49 - Original price $ 73.49Original price $ 73.49Current price $ 58.79$ 58.79 - $ 58.79Current price $ 58.79
Foster BL25FSS, 1/4" Straight-Thru Coupler x 1/4" Female NPT, FST Series, Ball Lock, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL25FSS is a 303 stainless steel 1/4" coupler from the FST Straight-Thru Seri...
View full detailsOriginal price $ 73.49Original price $ 73.49 - Original price $ 73.49Original price $ 73.49Current price $ 58.79$ 58.79 - $ 58.79Current price $ 58.79Save 20% -
Original price $ 23.89Original price $ 23.89 - Original price $ 23.89Original price $ 23.89Current price $ 19.09$ 19.09 - $ 19.09Current price $ 19.09
Foster BL38FS, 3/8" Straight-Thru Coupler x 3/8" Female NPT, FST Series, Ball Lock, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL38FS is a brass 3/8" coupler from the FST Straight-Thru Series - with NO va...
View full detailsOriginal price $ 23.89Original price $ 23.89 - Original price $ 23.89Original price $ 23.89Current price $ 19.09$ 19.09 - $ 19.09Current price $ 19.09Save 20% -
Original price $ 79.19Original price $ 79.19 - Original price $ 79.19Original price $ 79.19Current price $ 63.29$ 63.29 - $ 63.29Current price $ 63.29
Foster BL38FSS, 3/8" Straight-Thru Coupler x 3/8" Female NPT, FST Series, Ball Lock, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL38FSS is a 303 stainless steel 3/8" coupler from the FST Straight-Thru Seri...
View full detailsOriginal price $ 79.19Original price $ 79.19 - Original price $ 79.19Original price $ 79.19Current price $ 63.29$ 63.29 - $ 63.29Current price $ 63.29Save 20% -
Original price $ 30.89Original price $ 30.89 - Original price $ 30.89Original price $ 30.89Current price $ 24.69$ 24.69 - $ 24.69Current price $ 24.69
Foster BL50FS, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, Ball Lock, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL50FS is a brass 1/2" coupler from the FST Straight-Thru Series - with NO va...
View full detailsOriginal price $ 30.89Original price $ 30.89 - Original price $ 30.89Original price $ 30.89Current price $ 24.69$ 24.69 - $ 24.69Current price $ 24.69Save 20% -
Original price $ 89.49Original price $ 89.49 - Original price $ 89.49Original price $ 89.49Current price $ 71.59$ 71.59 - $ 71.59Current price $ 71.59
Foster BL50FSS, 1/2" Straight-Thru Coupler x 1/2" Female NPT, FST Series, Ball Lock, 303 Stainless Steel
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL50FSS is a 303 stainless steel 1/2" coupler from the FST Straight-Thru Seri...
View full detailsOriginal price $ 89.49Original price $ 89.49 - Original price $ 89.49Original price $ 89.49Current price $ 71.59$ 71.59 - $ 71.59Current price $ 71.59Save 20% -
Original price $ 46.89Original price $ 46.89 - Original price $ 46.89Original price $ 46.89Current price $ 37.49$ 37.49 - $ 37.49Current price $ 37.49
Foster BL75FS, 3/4" Straight-Thru Coupler x 3/4" Female NPT, FST Series, Ball Lock, Brass
In stockMaximum-flow connections for air, fluid, and vacuum lines. The Foster BL75FS is a brass 3/4" coupler from the FST Straight-Thru Series - with NO va...
View full detailsOriginal price $ 46.89Original price $ 46.89 - Original price $ 46.89Original price $ 46.89Current price $ 37.49$ 37.49 - $ 37.49Current price $ 37.49Save 20%
