Nozzle

摘要

Provided is a nozzle incorporating a valve, which easily improves durability. The nozzle for spraying water to a targeted object, including a nozzle body provided with a passage of water and a valve arranged inside the passage of the nozzle body, wherein at least a part of an inner surface of the passage including a portion to have contact with the valve is coated by diamond-like carbon.

主权项

1. A nozzle for spraying water over a targeted object, comprising:
a nozzle body provided with a passage of the water; and a valve arranged inside the passage of the nozzle body; and a sealing material that is provided for at least part of an outer peripheral surface of the valve, wherein at least a part of an inner surface of the passage, the part of an inner surface including a portion to have contact with the valve, is coated by diamond-like carbon, at least another part of an inner surface of the passage, said another part of an inner surface including a portion to have contact with the sealing material, is coated by diamond-like carbon, and the portion to have contact with the sealing material is a portion where the sealing material is always in contact with the inner surface of the passage and the portion to have contact with the sealing material on the inner surface of the passage slides with the valve in accordance with opening and closing of the valve.