截止阀的启闭件是塞形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。

祝茂阀门——截止阀、节流阀系列产品; 进口截止阀、德国进口截止阀、英国进口截止阀、日本进口截止阀、美国进口截止阀。手动截止阀、电动截止阀J941、J961、气动截止阀J641、气动角座阀、正齿轮传动截止阀J441、伞齿传动轮截止阀J541。保温截止阀BJ41、BJ45。高温高压电站阀（J61Y-P54/170V）、高温截止阀J41Y/J61Y。高压截止阀J41H、J61H、对焊高温高压截止阀J61、J65、J64、Y形截止阀J45/J65Y、自密封高压截止阀J41、J61。波纹管截止阀WJ41、WJ44、WJ61、WJ11、保温波纹管截止阀BWJ41。氧气截止阀JY41W。真空截止阀NKJ41H、NKJ44H、NKJ61、水封截止阀DSJ41H、DSJ61H。氨用截止阀J41B、J42B、J61B、J21B、J11B。角式截止阀J44、J64。衬氟截止阀J41F4、J45F4、衬胶截止阀J41J、J45J、塑料截止阀J41F-6S、J11F-6S。液化气截止阀、天燃气截止阀J41N。低温截止阀DJ41W。撞击式截止阀ZJ41H。蒸汽截止阀J41H、WJ41H。黄铜截止阀、铸铁截止阀、铸钢截止阀、不锈钢截止阀J41W、锻钢截止阀、铬钼钢截止阀、铬钼钒钢截止阀。节流阀、高压节流阀、截止节流平衡阀L41Y/L44Y/L46Y/L86Y/L87Y/L66Y/L67Y/L47Y。节流截止放空阀FJ41Y。节流截止排污阀TPJ41Y。