Dispensing valve/coupling assembly

A dispensing coupling for a container comprising a female connector having an opening closed by a seal, and adapted for detachable attachment to the container;

• a male connector having a main cylindrical body portion and a rear cylindrical body portion, said main cylindrical body portion provided with a tip portion, said main cylindrical body portion and said tip portion adapted to be inserted into said opening to break said seal, said tip portion having a hole for sucking fluid from the container;
• p1 a valve seat formed in said main cylindrical body portion;
• a valve body arranged in a fluid passing path in said rear cylindrical body portion and movable relative to said main cylindrical body portion and said tip portion, said valve body in fluid communication with said hole;
• a spring for urging said valve body toward said opening and said valve seat to thereby maintain said valve body engaged with said valve seat upon insertion of said male connector into said female connector;
• and
• wherein when a sucking pump is made operative to suck fluid from the container, said valve body is drawn toward and against said spring to disengage the valve body from the valve seat and thereby communicate said fluid passing path with the container, said coupling further comprising a spout having a protrusion ring on its outer circumference, said spout serving to attach said female connector to the container;
• a sleeve rotatably fitted onto the outer circumference of said main cylindrical body portion of said male connector;
• a lock ring arranged perpendicular to the longitudinal direction of said male connector and provided with a projection on its inner face to engage with a side of the protrusion ring, so as to fix said sleeve to said spout and;
• a compression coil spring for urging said lock ring in the diameter direction of the ring.