頂板（bǎn）引向型單座（zuò）調整閥是其中一種容積小、整體結構更為簡便但卻能能夠適應較為（wéi）苛求工況具體條件的單座調整（zhěng）閥。

該多個係列調整閥（fá）很比較容易釀成漣波管（guǎn）密封型、水蒸（zhēng）氣夾套型、實行型上閥蓋（gài）等較為額外整體結構。

Simple structure and compact size characterize our topguided control valves. They are applicable in a wide scope of liquid services as well as steam/gas services.

Those valves are easily adaptable to bellows, steam-jacketed and long extension bonnets.