Abstract The invention is an improved ball cock valve having an antisiphon feature, and improved refill tube feature. The ball cock valve is a float-operated valve, the valve comprising a member with a downwardly extending skirt within which is a sealing disc which closes or seats on the upper end of an inflow pipe. The valve member operates within the upper end of a sleeve or cylindrical member around the inflow pipe. The skirt of the valve member below the seat has a transverse bore and an extending tube which moves vertically with the valve member in an axial slot in the sidewall of the said sleeve, this tube being connected to a tube which is the refill tube that leads to the overflow pipe in the flush tank in which the ball cock valve is used. The area or space around the valve member in the upper end of the sleeve or cylinder is open to atmosphere and provides an air gap preventing siphoning or backflow, that is, it provides an antisiphoning feature. The pressure of water flowing in through the inflow pipe and impinging against the valve seat and reversing in direction inside the skirt of the valve member produces a pressure which assures a flow of water into the refill tube for refilling the toilet bowl after flushing.
A ball cock valve comprising means forming an inlet pipe, a valve member movable to engage and seal the end of the inlet pipe, means forming a housing around the inlet pipe and valve member and constituting an outflow pipe, float means for actuating the valve member, said housing having opening means whereby the interior of the said housing around the valve member is at all times open to atmospheric pressure whereby an antisiphon feature is provided to prevent back siphoning of water through the inflow tube, said valve member having a downwardly extending skirt positioned around the upper end of the inflow pipe whereby incoming water strikes the skirt and is substantially reversed in direction by means of the said skirt, a port in the side of said skirt and tubular means connected thereto whereby water may be forced into said tubular means from inside of said skirt and caused to be directed to a toilet bowl to refill it.
Claim 2
Dependent Claim
161 words
A ball cock valve comprising means forming an inlet pipe, a valve member movable to engage and seal the end of the inlet pipe, means forming a housing around the inlet pipe and valve member and constituting an outflow pipe, float means for actuating the valve member, said housing having opening means whereby the interior of the said housing around the valve member is at all times open to atmospheric pressure whereby an antisiphon feature is provided to prevent back siphoning of water through the inflow tube, said valve member having a downwardly extending skirt positioned around the upper end of the inflow pipe whereby incoming water strikes the skirt and is substantially reversed in direction by means of the said skirt, a port in the side of said skirt and tubular means connected thereto whereby water may be forced into said tubular means from inside of said skirt and caused to be directed to a toilet bowl to refill it.
Claim 3
Dependent Claim
24 words
A structure as in claim 1 wherein said valve member has a stem extending through said opening means and engageable with said float means.
Claim 4
Dependent Claim
22 words
A structure as in claim 1 wherein said housing has an opening therein positioned to allow movement of said tubular means therein.