Ground Joint Hose Couplings are designed for compressed air, steam, or fluid hose service where higher working pressure and increased coupling retention are required.  A hammer type female swivel nut with coarse thread allows for quick attachment and release. A spud adapter converts this coupling to pipe thread.
The ground joint hose coupling set is a three piece system featuring a hose shank, over-sized female swivel nut, and spud adapter.
Ground Joint Couplings are available in a larger size range than many other hose coupling styles.

The female swivel features a special coarse thread and over-sized hammer lugs that quickly seal the coupling tight against its special polymer seal (similar to a hammer union). Threaded spud adapters in male NPT, female NPT or double male wing nut thread allow for versatility in configuring hose systems from tool to compressor, manifold, and piping systems. While a gasket seal version is also available, most parts do not interchange. All parts on this site feature the built-in ground joint seal.

bolted interlocking clamps secure the ground joint hose coupling shank to heavy wire braid bull air hose, wire braid steam hose, or fluid transfer hose.

Using band type hose clamps will reduce the working pressure of the hose assembly and decrease shank retention.

Ground Joint Coupling – Wing Nut

(Ground joint fittings are designed for high pressure air or water (ie. Up to 500 psi) as well as steam (steam maximum 250 psi @ 450°F max) in plants, refineries, construction sites, or drilling applications.)

Ground Joint Coupling – Female SPUd

(Ground Joint female spud is included in the female hose coupling set. Purchase additional female spuds to convert additional equipment, pipe, and manifolds to ground joint wing nut thread.)

Ground Joint Coupling – Hose Stem

(Ground Joint Coupling-Hose Stem are to be installed by a fully trained assembler and are designed to be used with interlocking bolt clamps.)

Ground Joint Coupling – Male SPUd

Ground Joint Coupling – Double SPUd

Ground Joint Coupling – Male Stem

Ground Joint Coupling – Hose Stem