本公司生产的系列单座调节阀，采用顶部导向平衡笼式结构， 具有高强度、重载荷、S型流道、压降损失小、流量系数大、可 调范围广、流量特性精度高。此调节阀适用于工况压差较小的场 合，关闭严密，适用于对介质流量或者压力的调节。 

The series of single seat-control valves produced by the Company adopt top guide balanced cage structure， with high strength， heavy load， S-shaped flow passage， small pressure drop loss， large flow coe- f ficient， wide adjustable range and high flow characteristic accuracy. This control valve is suitable for the occasion with small working condition pressure difference and it can close tightly.It is suitable