1/4" ISO-B Hydraulic Coupler x 1/4" Female NPT, Brass | Foster H2B

Foster H2B is a 1/4" body ISO 7241-1 Series B hydraulic quick coupler, the most widely used industrial hydraulic interchange (Foster calls it FHK; Breco calls it DS). 1/4" Female NPT end, brass body, Buna-N seal, rated 2,700 PSI working pressure, -40°F to 250°F.

ISO-B is the hydraulic interchange you find on test equipment, ag and construction hydraulics, carpet-cleaning truck mounts and in-plant machinery. Both halves have poppet valves, so the line seals on both sides at disconnect: no fluid loss, no air pulled into the circuit. Connect and disconnect at zero pressure. Only same-size ISO-B halves couple, and any brand built to ISO 7241 Series B will mate with it.

Made in the USA by Foster to industrial spec: machined bar stock, hardened wear surfaces, and seals you can replace instead of throwing the coupler away. This is the same part used on production hydraulics and fluid handling equipment, not a light-duty import.

Not sure which size or interface you have? Email support@industrialsupplyworld.com with a photo of the mating half and we will match it.