An extension device for remotely opening and closing a valve from a user knob is described. The device includes a flexible connector that allows the user knob to be positioned in various places relative the valve. One use for the disclosed device is with a gas grill, wherein the gas tank is placed in a position that is not easily accessible or is difficult for some persons to access. The extension device may be mounted in various positions on or near the grill allowing the user to open and close the gas tank's valve before and after use of the grill.