Patent ID: 6263911
Filing Date: 2001-07-24
Classification: B05B,F16K,Y10T

Abstract:
A fluid flow control device comprising a fitting having an influent port, at least one effluent port and a main passageway extending from the influent port, a branch passageway extending from the main passageway to the effluent port and having an inner end, the effluent port being adapted to receive a riser pipe that has an upstream end engaged with the branch passageway and a downstream end that communicates with a fluid delivery device, a valve seat having an upstream side and a downstream side, the valve seat being adapted to be arranged between the inner end of the branch passageway and the upstream end of the riser pipe, a stopper including a first portion on the upstream side of the valve seat and a second portion on the downstream side of the valve seat, the stopper not being connected to the valve seat by a spring, the stopper comprising a stem that connects the first portion with the second portion, the first portion being a valve element and the second portion being a flared portion, a recess formed on the downstream side of the valve seat, the flared portion of the stopper having a shape complimentary to the shape of the recess, the stopper being movable between an open position relative to the valve seat and a closed position relative to the valve seat, and a biasing device which extends between the stopper and the fluid delivery device and which is not rigidly fixed to the valve seat.