開關閥
是一種高效、可靠、結構簡單的控制閥門，通過旋轉球體角度控制閥門啟閉，其密封材料通常為氟塑料，根據工況、溫度、壓力的不同選用合適的閥座，密封為零泄漏。
It is an efficient, reliable, and structurally simple control valve that controls the opening and closing of the valve by rotating the ball angle. Its sealing material is usually fluoroplastic, and suitable valve seats are selected according to different working conditions, temperatures, and pressures to achieve zero leakage.
