| 摘要 |
A rotary valve, having a cylindrical rotor mounted within a cylindrical bore in a casing with a predetermined clearance defined between the cylindrical surface of the rotor and the cylindrical edge surface of the bore, a first seal sealing posible leaks of a gas from a selectively fluidly connecting arrangement in the rotor in the axial direction of the rotor, and a second means seal sealing possible leaks of the gas from the connecting arrangement in the radial direction of the rotor. The casing has part of the first and second seals which is attached thereto. A combination of the clearance and the first and second seals enables the rotor to rotate with a low friction.
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