What are the characteristics and applications of the straight-through double-seat control valves?

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  1. The allowable pressure difference is large because it can offset many imbalance forces. The pressure difference valve of a DN100 valve is 280 KPa.
  2. Large circulation capacity, The KV valve of a DN100 valve is 160.
  3. The amount of leakage is large because two valve cores cannot be sealed at the same time. The double-seat valve has a standard discharge of 0.1% KV, which is 10 times that of a single-seat valve. The straight-through double-seat control valve is mainly used in applications where the high-pressure difference and the leakage are not critical.