Transfer valve

摘要

A closed transfer valve 200 for discharging a product from a bulk container 100 to a receptacle comprises a valve body member 202 and a valve gate member 204 movable with respect to one another between an open position for the discharge of a granular agricultural product into the receptacle and a closed position for shutting off the discharge. The valve 200 is provided with engagement means operative for locking the valve 200 to an adaptor A on the receptacle when the valve 200 is at least partly open and releasable therefrom when closed. The engagement means includes an interlock arm member 270 carried on the valve gate member 204 and a camming surface 224 disposed on the valve gate member 204. The camming surface 224 urges the interlock arm 270 toward the adapter as the valve body 202 is rotated with respect to the valve gate 204. The interlock arm 270 is provided with a detent 272 that is received by the adapter A when the relative position of the valve gate 204 and the valve body 202 members is such that the valve 200 is at least partially open.