Patent ID: 8739818

Claim:
A flow control valve with single set of orifices comprising: a top entry flow control valve having a valve body, said valve body having a smooth and straight bore cavity such that a wall of the cavity continues in a straight cylindrical configuration over the full length of the cavity, the cavity has no pin holes provided therein and has no indentations in the bore cavity wall to provide attachment of a valve assembly to the valve cavity wall, the cavity communicates between an inlet port and an outlet port, an access opening communicating with said cavity at an open end of the cavity, a valve assembly consisting of a single pair of discs, a single unitary valve bonnet, a turning fork and a lower seat such that the valve assembly is removably insertable into the cavity of the valve body, the single pair of discs provided with orifices, the single pair of discs located within the cavity between the inlet and outlet ports, a stationary disc of the pair of discs secured to the bonnet, the bonnet extends into the cavity via the access opening and secures over the open end of the cavity to seal with the valve body forming the top of the valve and preventing the stationary disc from rotating relative to the valve body, and a rotatable disc of the pair of discs secured to a rotatable turning fork which rotates to change the relative alignment of the disc orifices as a means to control flow to the outlet port, and an o-ring provided between the bonnet and the lower seat supplying sufficient friction to hold the lower seat and the bonnet together as they are pulled out of the cavity of the valve body, said o-ring supplying sufficient friction to hold the valve assembly together as the valve assembly is installed in and removed from the valve body.