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 $ 219.00Original price $ 219.00 - Original price $ 219.00Original price $ 219.00Current price $ 175.00$ 175.00 - $ 175.00Current price $ 175.00
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 $ 219.00Original price $ 219.00 - Original price $ 219.00Original price $ 219.00Current price $ 175.00$ 175.00 - $ 175.00Current price $ 175.00Save 20% -
Original price $ 272.00Original price $ 272.00 - Original price $ 272.00Original price $ 272.00Current price $ 219.00$ 219.00 - $ 219.00Current price $ 219.00
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 $ 272.00Original price $ 272.00 - Original price $ 272.00Original price $ 272.00Current price $ 219.00$ 219.00 - $ 219.00Current price $ 219.00Save 19% -
Original price $ 875.00Original price $ 875.00 - Original price $ 875.00Original price $ 875.00Current price $ 699.00$ 699.00 - $ 699.00Current price $ 699.00
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 $ 875.00Original price $ 875.00 - Original price $ 875.00Original price $ 875.00Current price $ 699.00$ 699.00 - $ 699.00Current price $ 699.00Save 20% -
Original price $ 633.00Original price $ 633.00 - Original price $ 633.00Original price $ 633.00Current price $ 507.00$ 507.00 - $ 507.00Current price $ 507.00
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 $ 633.00Original price $ 633.00 - Original price $ 633.00Original price $ 633.00Current price $ 507.00$ 507.00 - $ 507.00Current price $ 507.00Save 20% -
Original price $ 719.00Original price $ 719.00 - Original price $ 719.00Original price $ 719.00Current price $ 575.00$ 575.00 - $ 575.00Current price $ 575.00
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 $ 719.00Original price $ 719.00 - Original price $ 719.00Original price $ 719.00Current price $ 575.00$ 575.00 - $ 575.00Current price $ 575.00Save 20% -
Original price $ 706.00Original price $ 706.00 - Original price $ 706.00Original price $ 706.00Current price $ 566.00$ 566.00 - $ 566.00Current price $ 566.00
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 $ 706.00Original price $ 706.00 - Original price $ 706.00Original price $ 706.00Current price $ 566.00$ 566.00 - $ 566.00Current price $ 566.00Save 20% -
Original price $ 735.00Original price $ 735.00 - Original price $ 735.00Original price $ 735.00Current price $ 589.00$ 589.00 - $ 589.00Current price $ 589.00
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 $ 735.00Original price $ 735.00 - Original price $ 735.00Original price $ 735.00Current price $ 589.00$ 589.00 - $ 589.00Current price $ 589.00Save 20% -
Original price $ 2,081.00Original price $ 2,081.00 - Original price $ 2,081.00Original price $ 2,081.00Current price $ 1,664.00$ 1,664.00 - $ 1,664.00Current price $ 1,664.00
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 $ 2,081.00Original price $ 2,081.00 - Original price $ 2,081.00Original price $ 2,081.00Current price $ 1,664.00$ 1,664.00 - $ 1,664.00Current price $ 1,664.00Save 20% -
Original price $ 2,146.00Original price $ 2,146.00 - Original price $ 2,146.00Original price $ 2,146.00Current price $ 1,716.00$ 1,716.00 - $ 1,716.00Current price $ 1,716.00
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 $ 2,146.00Original price $ 2,146.00 - Original price $ 2,146.00Original price $ 2,146.00Current price $ 1,716.00$ 1,716.00 - $ 1,716.00Current price $ 1,716.00Save 20% -
Original price $ 2,178.00Original price $ 2,178.00 - Original price $ 2,178.00Original price $ 2,178.00Current price $ 1,743.00$ 1,743.00 - $ 1,743.00Current price $ 1,743.00
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 $ 2,178.00Original price $ 2,178.00 - Original price $ 2,178.00Original price $ 2,178.00Current price $ 1,743.00$ 1,743.00 - $ 1,743.00Current price $ 1,743.00Save 20% -
Original price $ 310.00Original price $ 310.00 - Original price $ 310.00Original price $ 310.00Current price $ 247.00$ 247.00 - $ 247.00Current price $ 247.00
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 $ 310.00Original price $ 310.00 - Original price $ 310.00Original price $ 310.00Current price $ 247.00$ 247.00 - $ 247.00Current price $ 247.00Save 20% -
Original price $ 1,152.00Original price $ 1,152.00 - Original price $ 1,152.00Original price $ 1,152.00Current price $ 921.00$ 921.00 - $ 921.00Current price $ 921.00
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 $ 1,152.00Original price $ 1,152.00 - Original price $ 1,152.00Original price $ 1,152.00Current price $ 921.00$ 921.00 - $ 921.00Current price $ 921.00Save 20% -
Original price $ 3,357.00Original price $ 3,357.00 - Original price $ 3,357.00Original price $ 3,357.00Current price $ 2,685.00$ 2,685.00 - $ 2,685.00Current price $ 2,685.00
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 $ 3,357.00Original price $ 3,357.00 - Original price $ 3,357.00Original price $ 3,357.00Current price $ 2,685.00$ 2,685.00 - $ 2,685.00Current price $ 2,685.00Save 20% -
Original price $ 3,087.00Original price $ 3,087.00 - Original price $ 3,087.00Original price $ 3,087.00Current price $ 2,470.00$ 2,470.00 - $ 2,470.00Current price $ 2,470.00
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 $ 3,087.00Original price $ 3,087.00 - Original price $ 3,087.00Original price $ 3,087.00Current price $ 2,470.00$ 2,470.00 - $ 2,470.00Current price $ 2,470.00Save 20% -
Original price $ 329.00Original price $ 329.00 - Original price $ 329.00Original price $ 329.00Current price $ 263.00$ 263.00 - $ 263.00Current price $ 263.00
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 $ 329.00Original price $ 329.00 - Original price $ 329.00Original price $ 329.00Current price $ 263.00$ 263.00 - $ 263.00Current price $ 263.00Save 20% -
Original price $ 850.00Original price $ 850.00 - Original price $ 850.00Original price $ 850.00Current price $ 679.00$ 679.00 - $ 679.00Current price $ 679.00
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 $ 850.00Original price $ 850.00 - Original price $ 850.00Original price $ 850.00Current price $ 679.00$ 679.00 - $ 679.00Current price $ 679.00Save 20% -
Original price $ 5,357.00Original price $ 5,357.00 - Original price $ 5,357.00Original price $ 5,357.00Current price $ 4,285.00$ 4,285.00 - $ 4,285.00Current price $ 4,285.00
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 $ 5,357.00Original price $ 5,357.00 - Original price $ 5,357.00Original price $ 5,357.00Current price $ 4,285.00$ 4,285.00 - $ 4,285.00Current price $ 4,285.00Save 20% -
Original price $ 367.00Original price $ 367.00 - Original price $ 367.00Original price $ 367.00Current price $ 294.00$ 294.00 - $ 294.00Current price $ 294.00
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 $ 367.00Original price $ 367.00 - Original price $ 367.00Original price $ 367.00Current price $ 294.00$ 294.00 - $ 294.00Current price $ 294.00Save 20% -
Original price $ 1,307.00Original price $ 1,307.00 - Original price $ 1,307.00Original price $ 1,307.00Current price $ 1,046.00$ 1,046.00 - $ 1,046.00Current price $ 1,046.00
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 $ 1,307.00Original price $ 1,307.00 - Original price $ 1,307.00Original price $ 1,307.00Current price $ 1,046.00$ 1,046.00 - $ 1,046.00Current price $ 1,046.00Save 20% -
Original price $ 425.00Original price $ 425.00 - Original price $ 425.00Original price $ 425.00Current price $ 340.00$ 340.00 - $ 340.00Current price $ 340.00
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 $ 425.00Original price $ 425.00 - Original price $ 425.00Original price $ 425.00Current price $ 340.00$ 340.00 - $ 340.00Current price $ 340.00Save 20% -
Original price $ 1,408.00Original price $ 1,408.00 - Original price $ 1,408.00Original price $ 1,408.00Current price $ 1,126.00$ 1,126.00 - $ 1,126.00Current price $ 1,126.00
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 $ 1,408.00Original price $ 1,408.00 - Original price $ 1,408.00Original price $ 1,408.00Current price $ 1,126.00$ 1,126.00 - $ 1,126.00Current price $ 1,126.00Save 20% -
Original price $ 550.00Original price $ 550.00 - Original price $ 550.00Original price $ 550.00Current price $ 439.00$ 439.00 - $ 439.00Current price $ 439.00
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 $ 550.00Original price $ 550.00 - Original price $ 550.00Original price $ 550.00Current price $ 439.00$ 439.00 - $ 439.00Current price $ 439.00Save 20% -
Original price $ 1,592.00Original price $ 1,592.00 - Original price $ 1,592.00Original price $ 1,592.00Current price $ 1,273.00$ 1,273.00 - $ 1,273.00Current price $ 1,273.00
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 $ 1,592.00Original price $ 1,592.00 - Original price $ 1,592.00Original price $ 1,592.00Current price $ 1,273.00$ 1,273.00 - $ 1,273.00Current price $ 1,273.00Save 20% -
Original price $ 834.00Original price $ 834.00 - Original price $ 834.00Original price $ 834.00Current price $ 667.00$ 667.00 - $ 667.00Current price $ 667.00
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 $ 834.00Original price $ 834.00 - Original price $ 834.00Original price $ 834.00Current price $ 667.00$ 667.00 - $ 667.00Current price $ 667.00Save 20%
