Pressure regulating shut-off valve
AssigneeMicrotecnica S.R.L.
InventorsAndrea MORNACCHI, Enrico QUAGLIA, Matteo CAPPO
Life of this patent
Estimating the term…
Abstract
A pressure regulating shut-off valve (PRSOV) for an aircraft anti-ice system includes a valve body defining an inlet and an outlet and a fluid flow path between the inlet and the outlet. The valve includes a first piston is operable as a shut-off piston, a second piston is operable as a shut-off piston and as a regulating piston and a third piston is operable as a regulating piston, the third piston being actuable to regulate flow between the inlet and the outlet.
Claims15
A pressure regulating shut-off valve for an aircraft anti-ice system comprising:
- a valve body defining an inlet and an outlet, and a fluid flow path between the inlet and the outlet;
- a first piston operable as a shut-off piston, the first piston being actuable between a first position in which fluid flow between the inlet and the outlet is permitted, and a second position in which fluid flow between the inlet and the outlet is prevented;
- a second piston operable as a shut-off piston and as a regulating piston, the second piston being actuable between a first position in which fluid flow between the inlet and the outlet is permitted and a second position in which fluid flow between the inlet and the outlet is prevented, and being actuable to regulate flow between the inlet and the outlet;
- and
- a third piston operable as a regulating piston, the third piston being actuable to regulate flow between the inlet and the outlet.
A method of operating an aircraft anti-ice system comprising:
- providing a pressure regulating shut-off valve comprising a first piston, a second piston and a third piston;
- and
- configuring both the second piston and the third piston to regulate fluid flow through the pressure regulating shut-off valve.
Dependencies are inferred from the claim text.