Pneumatic Quick Couplers
Pneumatic quick couplers connect and disconnect air lines in one quick motion, no tools required. This collection covers the full range of air quick couplers and plugs across every interchange, from miniature 2 Series to industrial body sizes, in steel, brass, and stainless. Filter by series, body size, thread, and material to find the exact coupler or plug your air system needs.
-
Original price $ 357.00Original price $ 357.00 - Original price $ 357.00Original price $ 357.00Current price $ 285.00$ 285.00 - $ 285.00Current price $ 285.00
Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster PD13-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-f...
View full detailsOriginal price $ 357.00Original price $ 357.00 - Original price $ 357.00Original price $ 357.00Current price $ 285.00$ 285.00 - $ 285.00Current price $ 285.00Save 20% -
Original price $ 274.00Original price $ 274.00 - Original price $ 274.00Original price $ 274.00Current price $ 220.00$ 220.00 - $ 220.00Current price $ 220.00
Foster PD11-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 3/4" OD, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster PD11-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-f...
View full detailsOriginal price $ 274.00Original price $ 274.00 - Original price $ 274.00Original price $ 274.00Current price $ 220.00$ 220.00 - $ 220.00Current price $ 220.00Save 20% -
Original price $ 252.00Original price $ 252.00 - Original price $ 252.00Original price $ 252.00Current price $ 201.00$ 201.00 - $ 201.00Current price $ 201.00
Foster PD9-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 11/16" OD, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster PD9-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-fl...
View full detailsOriginal price $ 252.00Original price $ 252.00 - Original price $ 252.00Original price $ 252.00Current price $ 201.00$ 201.00 - $ 201.00Current price $ 201.00Save 20% -
Original price $ 250.00Original price $ 250.00 - Original price $ 250.00Original price $ 250.00Current price $ 199.00$ 199.00 - $ 199.00Current price $ 199.00
Foster PD7-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 5/8" OD, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster PD7-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-fl...
View full detailsOriginal price $ 250.00Original price $ 250.00 - Original price $ 250.00Original price $ 250.00Current price $ 199.00$ 199.00 - $ 199.00Current price $ 199.00Save 20% -
Original price $ 276.00Original price $ 276.00 - Original price $ 276.00Original price $ 276.00Current price $ 222.00$ 222.00 - $ 222.00Current price $ 222.00
Foster PB7-4, 3/8" Industrial Plug x Reusable Hose Fitting, 1/4" ID x 5/8" OD, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster PB7-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-fl...
View full detailsOriginal price $ 276.00Original price $ 276.00 - Original price $ 276.00Original price $ 276.00Current price $ 222.00$ 222.00 - $ 222.00Current price $ 222.00Save 20% -
Original price $ 243.00Original price $ 243.00 - Original price $ 243.00Original price $ 243.00Current price $ 194.00$ 194.00 - $ 194.00Current price $ 194.00
Foster PB5-4, 3/8" Industrial Plug x Reusable Hose Fitting, 1/4" ID x 9/16" OD, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster PB5-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-fl...
View full detailsOriginal price $ 243.00Original price $ 243.00 - Original price $ 243.00Original price $ 243.00Current price $ 194.00$ 194.00 - $ 194.00Current price $ 194.00Save 20% -
Original price $ 261.00Original price $ 261.00 - Original price $ 261.00Original price $ 261.00Current price $ 208.00$ 208.00 - $ 208.00Current price $ 208.00
Foster PB3-4, 3/8" Industrial Plug x Reusable Hose Fitting, 1/4" ID x 1/2" OD, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster PB3-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-fl...
View full detailsOriginal price $ 261.00Original price $ 261.00 - Original price $ 261.00Original price $ 261.00Current price $ 208.00$ 208.00 - $ 208.00Current price $ 208.00Save 20% -
Original price $ 189.00Original price $ 189.00 - Original price $ 189.00Original price $ 189.00Current price $ 152.00$ 152.00 - $ 152.00Current price $ 152.00
Foster 81-4, 3/8" Industrial Plug x 1/2" Push-On Hose Stem, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 81-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...
View full detailsOriginal price $ 189.00Original price $ 189.00 - Original price $ 189.00Original price $ 189.00Current price $ 152.00$ 152.00 - $ 152.00Current price $ 152.00Save 20% -
Original price $ 470.00Original price $ 470.00 - Original price $ 470.00Original price $ 470.00Current price $ 376.00$ 376.00 - $ 376.00Current price $ 376.00
Foster 71-4B, 3/8" Industrial Plug x 3/8" Push-On Hose Stem, 4 Series, Brass
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 71-4B is a Brass 3/8" industrial plug from the Foster 4 Series — a high-fl...
View full detailsOriginal price $ 470.00Original price $ 470.00 - Original price $ 470.00Original price $ 470.00Current price $ 376.00$ 376.00 - $ 376.00Current price $ 376.00Save 20% -
Original price $ 112.00Original price $ 112.00 - Original price $ 112.00Original price $ 112.00Current price $ 89.00$ 89.00 - $ 89.00Current price $ 89.00
Foster 71-4, 3/8" Industrial Plug x 3/8" Push-On Hose Stem, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 71-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...
View full detailsOriginal price $ 112.00Original price $ 112.00 - Original price $ 112.00Original price $ 112.00Current price $ 89.00$ 89.00 - $ 89.00Current price $ 89.00Save 21% -
Original price $ 130.00Original price $ 130.00 - Original price $ 130.00Original price $ 130.00Current price $ 105.00$ 105.00 - $ 105.00Current price $ 105.00
Foster 51-4, 3/8" Industrial Plug x 1/4" Push-On Hose Stem, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 51-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...
View full detailsOriginal price $ 130.00Original price $ 130.00 - Original price $ 130.00Original price $ 130.00Current price $ 105.00$ 105.00 - $ 105.00Current price $ 105.00Save 19% -
Original price $ 123.00Original price $ 123.00 - Original price $ 123.00Original price $ 123.00Current price $ 98.00$ 98.00 - $ 98.00Current price $ 98.00
Foster 49-4, 3/8" Industrial Plug x 1/2" Hose ID, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 49-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...
View full detailsOriginal price $ 123.00Original price $ 123.00 - Original price $ 123.00Original price $ 123.00Current price $ 98.00$ 98.00 - $ 98.00Current price $ 98.00Save 20% -
Original price $ 173.00Original price $ 173.00 - Original price $ 173.00Original price $ 173.00Current price $ 140.00$ 140.00 - $ 140.00Current price $ 140.00
Foster 48-4B, 3/8" Industrial Plug x 3/8" Hose ID, 4 Series, Brass
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 48-4B is a Brass 3/8" industrial plug from the Foster 4 Series — a high-fl...
View full detailsOriginal price $ 173.00Original price $ 173.00 - Original price $ 173.00Original price $ 173.00Current price $ 140.00$ 140.00 - $ 140.00Current price $ 140.00Save 19% -
Original price $ 110.00Original price $ 110.00 - Original price $ 110.00Original price $ 110.00Current price $ 88.00$ 88.00 - $ 88.00Current price $ 88.00
Foster 48-4, 3/8" Industrial Plug x 3/8" Hose ID, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 48-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...
View full detailsOriginal price $ 110.00Original price $ 110.00 - Original price $ 110.00Original price $ 110.00Current price $ 88.00$ 88.00 - $ 88.00Current price $ 88.00Save 20% -
Original price $ 182.00Original price $ 182.00 - Original price $ 182.00Original price $ 182.00Current price $ 145.00$ 145.00 - $ 145.00Current price $ 145.00
Foster 47-4, 3/8" Industrial Plug x 5/16" Hose ID, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 47-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...
View full detailsOriginal price $ 182.00Original price $ 182.00 - Original price $ 182.00Original price $ 182.00Current price $ 145.00$ 145.00 - $ 145.00Current price $ 145.00Save 20% -
Original price $ 154.00Original price $ 154.00 - Original price $ 154.00Original price $ 154.00Current price $ 123.00$ 123.00 - $ 123.00Current price $ 123.00
Foster 46-4, 3/8" Industrial Plug x 1/4" Hose ID, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 46-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...
View full detailsOriginal price $ 154.00Original price $ 154.00 - Original price $ 154.00Original price $ 154.00Current price $ 123.00$ 123.00 - $ 123.00Current price $ 123.00Save 20% -
Original price $ 301.00Original price $ 301.00 - Original price $ 301.00Original price $ 301.00Current price $ 240.00$ 240.00 - $ 240.00Current price $ 240.00
Foster 44S-4, 3/8" Industrial Plug x 1/2" Male NPT, 4 Series, Free Swivel, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 44S-4 is a Brass/Steel 3/8" industrial plug from the Foster 4 Series — a h...
View full detailsOriginal price $ 301.00Original price $ 301.00 - Original price $ 301.00Original price $ 301.00Current price $ 240.00$ 240.00 - $ 240.00Current price $ 240.00Save 20% -
Original price $ 227.00Original price $ 227.00 - Original price $ 227.00Original price $ 227.00Current price $ 182.00$ 182.00 - $ 182.00Current price $ 182.00
Foster 42S-4, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, Free Swivel, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 42S-4 is a Brass/Steel 3/8" industrial plug from the Foster 4 Series — a h...
View full detailsOriginal price $ 227.00Original price $ 227.00 - Original price $ 227.00Original price $ 227.00Current price $ 182.00$ 182.00 - $ 182.00Current price $ 182.00Save 20% -
Original price $ 351.00Original price $ 351.00 - Original price $ 351.00Original price $ 351.00Current price $ 281.00$ 281.00 - $ 281.00Current price $ 281.00
Foster 40S-4, 3/8" Industrial Plug x 1/4" Male NPT, 4 Series, Free Swivel, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 40S-4 is a Brass/Steel 3/8" industrial plug from the Foster 4 Series — a h...
View full detailsOriginal price $ 351.00Original price $ 351.00 - Original price $ 351.00Original price $ 351.00Current price $ 281.00$ 281.00 - $ 281.00Current price $ 281.00Save 20% -
Original price $ 123.00Original price $ 123.00 - Original price $ 123.00Original price $ 123.00Current price $ 98.00$ 98.00 - $ 98.00Current price $ 98.00
Foster 44-4, 3/8" Industrial Plug x 1/2" Male NPT, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 44-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...
View full detailsOriginal price $ 123.00Original price $ 123.00 - Original price $ 123.00Original price $ 123.00Current price $ 98.00$ 98.00 - $ 98.00Current price $ 98.00Save 20% -
Original price $ 254.00Original price $ 254.00 - Original price $ 254.00Original price $ 254.00Current price $ 203.00$ 203.00 - $ 203.00Current price $ 203.00
Foster 42-4S/S, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, 303 Stainless
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 42-4S/S is a 303 Stainless 3/8" industrial plug from the Foster 4 Series —...
View full detailsOriginal price $ 254.00Original price $ 254.00 - Original price $ 254.00Original price $ 254.00Current price $ 203.00$ 203.00 - $ 203.00Current price $ 203.00Save 20% -
Original price $ 157.00Original price $ 157.00 - Original price $ 157.00Original price $ 157.00Current price $ 126.00$ 126.00 - $ 126.00Current price $ 126.00
Foster 42-4B, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, Brass
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 42-4B is a Brass 3/8" industrial plug from the Foster 4 Series — a high-fl...
View full detailsOriginal price $ 157.00Original price $ 157.00 - Original price $ 157.00Original price $ 157.00Current price $ 126.00$ 126.00 - $ 126.00Current price $ 126.00Save 20% -
Original price $ 88.00Original price $ 88.00 - Original price $ 88.00Original price $ 88.00Current price $ 70.00$ 70.00 - $ 70.00Current price $ 70.00
Foster 42-4, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 42-4 is a Steel 3/8" industrial plug from the Foster 4 Series — a high-flo...
View full detailsOriginal price $ 88.00Original price $ 88.00 - Original price $ 88.00Original price $ 88.00Current price $ 70.00$ 70.00 - $ 70.00Current price $ 70.00Save 20% -
Original price $ 184.00Original price $ 184.00 - Original price $ 184.00Original price $ 184.00Current price $ 147.00$ 147.00 - $ 147.00Current price $ 147.00
Foster 40-4S/S, 3/8" Industrial Plug x 1/4" Male NPT, 4 Series, 303 Stainless
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Foster 40-4S/S is a 303 Stainless 3/8" industrial plug from the Foster 4 Series —...
View full detailsOriginal price $ 184.00Original price $ 184.00 - Original price $ 184.00Original price $ 184.00Current price $ 147.00$ 147.00 - $ 147.00Current price $ 147.00Save 20%
