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Pneumatic film through the sleeve regulator
Usually by electric actuators or pneumatic actuators and valve body two parts together. Straight travel mainly through single seater and direct two-seater type two kinds, the latter has a large flow capacity, unbalanced and the characteristics of stable operation, so often especially suitable for large flow, little pressure drop and leakage. Quarter-turn basically has: V electric regulating ball valve, cut-off valve pneumatic film,

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