Patent ID: 6612540
Filing Date: 2003-09-02
Classification: F16K

Abstract:
A control valve for use in connection with a flow valve having a flow valve fluid inlet, a flow valve fluid outlet, and a flow valve piston orifice, the control valve comprising:a) an adapter element including a generally tubular unitary body comprising: i) a first open end comprising an adapter element chamber; ii) a second closed end comprising a piston orifice plug extension adapted for sealing engagement within the flow valve piston orifice of the flow valve; iii) at least one adapter element fluid inlet extending through the tubular body of the adapter element for establishing fluid communication between the flow valve fluid inlet and the adapter element chamber; and iv) at least one adapter element fluid outlet extending through the tubular body of the adapter element at the piston orifice plug extension for establishing fluid communication between the flow valve fluid outlet and the adapter element chamber; and b) a plunger mechanism sealingly engaged with the first open end of the adapter element within the adapter element chamber, the plunger mechanism having a plunger element in communication with the adapter element fluid outlet and being operable between an unsealed position in which fluid communication is permitted between the adapter element fluid outlet and the adapter element chamber and a sealed position in which fluid communication is prevented between the adapter element fluid outlet and the adapter element chamber.