Valve assembly with oil shut-off valve

A method of managing a flow of oil to a component of a gas turbine engine, comprising:

• conveying the flow of oil from an oil supply pump simultaneously towards an oil shut-off valve and a compensating valve, the oil shut-off valve and the compensating valve being upstream of a bearing cavity;
• bypassing the flow of oil from the component by at least closing the oil shut-off valve to direct oil towards an oil reservoir via the compensating valve;
• directing the flow of oil towards the component via the oil shut-off valve by closing the compensating valve and opening the oil shut-off valve;
• wherein the oil shut-off valve is operated as a function of oil pressure produced by the supply pump which is generated by a rotational speed of a gas generator of the gas turbine engine;
• and
• the compensating valve is operated independently of the oil-shut off valve as a function of a viscosity of the oil, the compensating valve including a laminar hole and an orifice which operate to make the compensating valve sensitive to oil temperature, the laminar hole extending through one of a piston and a housing of the compensating valve, and the orifice extending through the other one of the piston and the housing, the laminar hole and the orifice creating a pressure gradient across the piston to displace the piston, the laminar hole extending through the housing at the same end thereof as a biasing element acting against the piston of the compensating valve, the laminar hole and the orifice being in serial flow communication.