Foster
Foster quick couplers set the standard in pneumatic and hydraulic connections. Part of the ZSI-Foster line, Foster couplers and plugs cover the full range of industrial interchanges and body sizes in steel, brass, and stainless construction. Built for reliable, repeatable connections in air and fluid systems. Shop the full Foster range below.
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Original price $ 28.99Original price $ 28.99 - Original price $ 28.99Original price $ 28.99Current price $ 23.19$ 23.19 - $ 23.19Current price $ 23.19
Foster BL1814, 3/8" Industrial Coupler x 1/2" Push-On Hose Stem, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster BL1814 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...
View full detailsOriginal price $ 28.99Original price $ 28.99 - Original price $ 28.99Original price $ 28.99Current price $ 23.19$ 23.19 - $ 23.19Current price $ 23.19Save 20% -
Original price $ 27.49Original price $ 27.49 - Original price $ 27.49Original price $ 27.49Current price $ 21.99$ 21.99 - $ 21.99Current price $ 21.99
Foster 1814, 3/8" Industrial Coupler x 1/2" Push-On Hose Stem, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 1814 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...
View full detailsOriginal price $ 27.49Original price $ 27.49 - Original price $ 27.49Original price $ 27.49Current price $ 21.99$ 21.99 - $ 21.99Current price $ 21.99Save 20% -
Original price $ 32.69Original price $ 32.69 - Original price $ 32.69Original price $ 32.69Current price $ 26.09$ 26.09 - $ 26.09Current price $ 26.09
Foster 1714W, 3/8" Industrial Coupler x 3/8" Push-On Hose Stem, 4 Series, Water, Brass/SS
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 1714W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...
View full detailsOriginal price $ 32.69Original price $ 32.69 - Original price $ 32.69Original price $ 32.69Current price $ 26.09$ 26.09 - $ 26.09Current price $ 26.09Save 20% -
Original price $ 27.09Original price $ 27.09 - Original price $ 27.09Original price $ 27.09Current price $ 21.69$ 21.69 - $ 21.69Current price $ 21.69
Foster BL1714, 3/8" Industrial Coupler x 3/8" Push-On Hose Stem, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster BL1714 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...
View full detailsOriginal price $ 27.09Original price $ 27.09 - Original price $ 27.09Original price $ 27.09Current price $ 21.69$ 21.69 - $ 21.69Current price $ 21.69Save 20% -
Original price $ 24.99Original price $ 24.99 - Original price $ 24.99Original price $ 24.99Current price $ 19.99$ 19.99 - $ 19.99Current price $ 19.99
Foster 1714, 3/8" Industrial Coupler x 3/8" Push-On Hose Stem, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 1714 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...
View full detailsOriginal price $ 24.99Original price $ 24.99 - Original price $ 24.99Original price $ 24.99Current price $ 19.99$ 19.99 - $ 19.99Current price $ 19.99Save 20% -
Original price $ 33.39Original price $ 33.39 - Original price $ 33.39Original price $ 33.39Current price $ 26.79$ 26.79 - $ 26.79Current price $ 26.79
Foster 4904S, 3/8" Industrial Coupler x 1/2" Hose ID, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4904S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...
View full detailsOriginal price $ 33.39Original price $ 33.39 - Original price $ 33.39Original price $ 33.39Current price $ 26.79$ 26.79 - $ 26.79Current price $ 26.79Save 20% -
Original price $ 33.99Original price $ 33.99 - Original price $ 33.99Original price $ 33.99Current price $ 27.19$ 27.19 - $ 27.19Current price $ 27.19
Foster BL4904, 3/8" Industrial Coupler x 1/2" Hose ID, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4904 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...
View full detailsOriginal price $ 33.99Original price $ 33.99 - Original price $ 33.99Original price $ 33.99Current price $ 27.19$ 27.19 - $ 27.19Current price $ 27.19Save 20% -
Original price $ 27.39Original price $ 27.39 - Original price $ 27.39Original price $ 27.39Current price $ 21.89$ 21.89 - $ 21.89Current price $ 21.89
Foster 4904, 3/8" Industrial Coupler x 1/2" Hose ID, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4904 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...
View full detailsOriginal price $ 27.39Original price $ 27.39 - Original price $ 27.39Original price $ 27.39Current price $ 21.89$ 21.89 - $ 21.89Current price $ 21.89Save 20% -
Original price $ 32.39Original price $ 32.39 - Original price $ 32.39Original price $ 32.39Current price $ 25.89$ 25.89 - $ 25.89Current price $ 25.89
Foster 4804W, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, Water, Brass/SS
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4804W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...
View full detailsOriginal price $ 32.39Original price $ 32.39 - Original price $ 32.39Original price $ 32.39Current price $ 25.89$ 25.89 - $ 25.89Current price $ 25.89Save 20% -
Original price $ 34.49Original price $ 34.49 - Original price $ 34.49Original price $ 34.49Current price $ 27.59$ 27.59 - $ 27.59Current price $ 27.59
Foster 4804S, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4804S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...
View full detailsOriginal price $ 34.49Original price $ 34.49 - Original price $ 34.49Original price $ 34.49Current price $ 27.59$ 27.59 - $ 27.59Current price $ 27.59Save 20% -
Original price $ 50.09Original price $ 50.09 - Original price $ 50.09Original price $ 50.09Current price $ 39.99$ 39.99 - $ 39.99Current price $ 39.99
Foster 4804S/S, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, 303 Stainless
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4804S/S is a 303 Stainless 3/8" industrial coupler from the Foster 4 Serie...
View full detailsOriginal price $ 50.09Original price $ 50.09 - Original price $ 50.09Original price $ 50.09Current price $ 39.99$ 39.99 - $ 39.99Current price $ 39.99Save 20% -
Original price $ 33.59Original price $ 33.59 - Original price $ 33.59Original price $ 33.59Current price $ 26.89$ 26.89 - $ 26.89Current price $ 26.89
Foster BL4804, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4804 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...
View full detailsOriginal price $ 33.59Original price $ 33.59 - Original price $ 33.59Original price $ 33.59Current price $ 26.89$ 26.89 - $ 26.89Current price $ 26.89Save 20% -
Original price $ 28.19Original price $ 28.19 - Original price $ 28.19Original price $ 28.19Current price $ 22.59$ 22.59 - $ 22.59Current price $ 22.59
Foster 4804, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4804 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...
View full detailsOriginal price $ 28.19Original price $ 28.19 - Original price $ 28.19Original price $ 28.19Current price $ 22.59$ 22.59 - $ 22.59Current price $ 22.59Save 20% -
Original price $ 32.99Original price $ 32.99 - Original price $ 32.99Original price $ 32.99Current price $ 26.39$ 26.39 - $ 26.39Current price $ 26.39
Foster BL4704, 3/8" Industrial Coupler x 5/16" Hose ID, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4704 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...
View full detailsOriginal price $ 32.99Original price $ 32.99 - Original price $ 32.99Original price $ 32.99Current price $ 26.39$ 26.39 - $ 26.39Current price $ 26.39Save 20% -
Original price $ 28.79Original price $ 28.79 - Original price $ 28.79Original price $ 28.79Current price $ 22.99$ 22.99 - $ 22.99Current price $ 22.99
Foster 4704, 3/8" Industrial Coupler x 5/16" Hose ID, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4704 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...
View full detailsOriginal price $ 28.79Original price $ 28.79 - Original price $ 28.79Original price $ 28.79Current price $ 22.99$ 22.99 - $ 22.99Current price $ 22.99Save 20% -
Original price $ 32.39Original price $ 32.39 - Original price $ 32.39Original price $ 32.39Current price $ 25.99$ 25.99 - $ 25.99Current price $ 25.99
Foster 4604W, 3/8" Industrial Coupler x 1/4" Hose ID, 4 Series, Water, Brass/SS
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4604W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...
View full detailsOriginal price $ 32.39Original price $ 32.39 - Original price $ 32.39Original price $ 32.39Current price $ 25.99$ 25.99 - $ 25.99Current price $ 25.99Save 20% -
Original price $ 32.59Original price $ 32.59 - Original price $ 32.59Original price $ 32.59Current price $ 26.09$ 26.09 - $ 26.09Current price $ 26.09
Foster BL4604, 3/8" Industrial Coupler x 1/4" Hose ID, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4604 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...
View full detailsOriginal price $ 32.59Original price $ 32.59 - Original price $ 32.59Original price $ 32.59Current price $ 26.09$ 26.09 - $ 26.09Current price $ 26.09Save 20% -
Original price $ 27.39Original price $ 27.39 - Original price $ 27.39Original price $ 27.39Current price $ 21.89$ 21.89 - $ 21.89Current price $ 21.89
Foster 4604, 3/8" Industrial Coupler x 1/4" Hose ID, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4604 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...
View full detailsOriginal price $ 27.39Original price $ 27.39 - Original price $ 27.39Original price $ 27.39Current price $ 21.89$ 21.89 - $ 21.89Current price $ 21.89Save 20% -
Original price $ 33.39Original price $ 33.39 - Original price $ 33.39Original price $ 33.39Current price $ 26.79$ 26.79 - $ 26.79Current price $ 26.79
Foster 4504W, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Water, Brass/SS
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4504W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...
View full detailsOriginal price $ 33.39Original price $ 33.39 - Original price $ 33.39Original price $ 33.39Current price $ 26.79$ 26.79 - $ 26.79Current price $ 26.79Save 20% -
Original price $ 32.99Original price $ 32.99 - Original price $ 32.99Original price $ 32.99Current price $ 26.39$ 26.39 - $ 26.39Current price $ 26.39
Foster 4504S, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Steam/EPDM, Brass body, Brass sleeve, SS valve
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4504S is a Brass body, Brass sleeve, SS valve 3/8" industrial coupler from...
View full detailsOriginal price $ 32.99Original price $ 32.99 - Original price $ 32.99Original price $ 32.99Current price $ 26.39$ 26.39 - $ 26.39Current price $ 26.39Save 20% -
Original price $ 32.99Original price $ 32.99 - Original price $ 32.99Original price $ 32.99Current price $ 26.39$ 26.39 - $ 26.39Current price $ 26.39
Foster 4504H, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Heat/Viton, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4504H is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — ...
View full detailsOriginal price $ 32.99Original price $ 32.99 - Original price $ 32.99Original price $ 32.99Current price $ 26.39$ 26.39 - $ 26.39Current price $ 26.39Save 20% -
Original price $ 33.19Original price $ 33.19 - Original price $ 33.19Original price $ 33.19Current price $ 26.59$ 26.59 - $ 26.59Current price $ 26.59
Foster BL4504, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster BL4504 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series —...
View full detailsOriginal price $ 33.19Original price $ 33.19 - Original price $ 33.19Original price $ 33.19Current price $ 26.59$ 26.59 - $ 26.59Current price $ 26.59Save 20% -
Original price $ 27.99Original price $ 27.99 - Original price $ 27.99Original price $ 27.99Current price $ 22.39$ 22.39 - $ 22.39Current price $ 22.39
Foster 4504, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4504 is a Brass/Steel 3/8" industrial coupler from the Foster 4 Series — a...
View full detailsOriginal price $ 27.99Original price $ 27.99 - Original price $ 27.99Original price $ 27.99Current price $ 22.39$ 22.39 - $ 22.39Current price $ 22.39Save 20% -
Original price $ 29.49Original price $ 29.49 - Original price $ 29.49Original price $ 29.49Current price $ 23.59$ 23.59 - $ 23.59Current price $ 23.59
Foster 4304W, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Water, Brass/SS
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 4304W is a Brass/SS 3/8" industrial coupler from the Foster 4 Series — a h...
View full detailsOriginal price $ 29.49Original price $ 29.49 - Original price $ 29.49Original price $ 29.49Current price $ 23.59$ 23.59 - $ 23.59Current price $ 23.59Save 20%
