本公司生産的系列單座調節閥，采用頂部導向平衡(héng)籠式結構， 具有高強度、重載荷、S型流道、壓降損失(shī)小、流量系數大、可 調範圍廣、流量特性精度高。此調節閥适用于工況壓差較小的場 合，關閉(bì)嚴密，适用于對介質流量或者壓力的調節。 

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