Patent ID: 6874753
Filing Date: 2005-04-05
Classification: F16K

Abstract:
1. A sealing device for a modulating valve of the type having a valve body defining a flow passage, at least one inlet and one outlet, a valve displaceable in the flow passage to control an opening of the flow passage, and actuation means having an actuator rod rotatably coupled to the valve at an exterior of the valve body for displacing the valve in the flow passage, the sealing device comprising a body surrounding the actuator rod of the modulating valve, the body defining a receptacle for accommodating a coupling between the actuator rod and the valve so as not to impede on the actuation of the valve by the actuator rod; connection means adapted to secure the body of the sealing device to the valve body, the connection means being a tubular member being adapted to be threadingly engaged to the valve body, the tubular member compressing the body of the sealing device against the valve body such that a first one of the sealing means is squeezed between the body of the sealing device and the valve body; and sealing means between the body of the sealing device and the actuator rod and between the body of the sealing device and the valve body, to prevent fluid flow therebetween, said body of the sealing device and said sealing means being adapted to conceal and contain fluid leaks between one of the valve and the actuator rod, and the valve body, whereby no fluid is lost due to a leaking modulating valve.