A quick disconnect coupling, comprising:
- a generally annular socket housing having a bore extending along a longitudinal axis therethrough and defining an axial fluid channel and a plug receiving end configured to receive therein a plug and a female connector at the opposing end, the socket housing further comprising an outer surface and shoulder stop formed thereon, and apertures adjacent the plug receiving end;
- an annular lock sleeve carried by the socket housing and having an annular recess defining a spring passage with the outer surface of the socket housing, said lock sleeve being movable on the socket housing between a retracted position and an extended locking position toward the plug receiving end, and including an annular ball recess formed at the end of the lock sleeve adjacent the plug receiving end;
- a spring contained in the spring passage and engaging the shoulder stop and biasing the lock sleeve into the extended locking position;
- latch balls within said apertures and retained therein by said lock sleeve, wherein when the lock sleeve is in the extended locking position the latch balls are locked radially inward and engage an annular groove on a plug to lock the plug to the socket housing, and when the lock sleeve is retracted the latch balls are released to move radially outward while retained within said apertures by said ball recess during coupling and decoupling of a plug with the socket housing;
- said bore including a first internal channel portion at the plug receiving end and a second internal channel portion adjacent and after the first internal channel portion and extending to the female connector;
- a plunger received within the axial fluid channel of the socket housing and having a first end as a closed plunger face, an annular plunger shoulder adjacent the closed plunger face, and a sealing ring thereon adjacent the annular plunger shoulder, and a second end being substantially open and facing the plug receiving end, side orifices within said plunger allowing fluid flow therethrough, said plunger being longitudinally movable from a forward sealed position where the sealing ring is in sealed engagement with the second internal channel portion to prevent fluid flow, and a retracted, unsealed position engaging a connected plug allowing fluid flow into the tubular plunger via the side orifices into the second internal channel portion;
- a wave spring having opposing first and second flat shim ends, wherein the first flat shim end is secured onto the annular plunger shoulder;
- a first conical gasket formed of a polymeric material and having a shoulder, and secured at the shoulder to the second flat shim end of the wave spring;
- a first retaining ring secured to the second internal channel portion adjacent the female connector;
- a second conical gasket formed of a polymeric material and secured by the first retaining ring to the socket housing at the second internal channel portion adjacent the female connector;
- and
- wherein first and second conical gaskets each include a flat surface angled at about 45° to the vertical plane and that interface each other in sliding engagement when the plug is fully received within the plug receiving end of the annular socket housing to allow rotative sliding movement relative to each other, wherein the first conical gasket, connected wave spring, connected plunger, and a plug received within the plug receiving end of the socket housing are free to rotate within the socket housing and minimize torsion forces and stress on the wave spring and within the socket housing.