法蘭截止閥的材質(zhì)可分為鑄鐵法蘭截止閥[J41T、J41W]，鑄鋼法蘭截止閥[J41H]，不銹鋼法蘭截止閥[J41W]，鉻鉬鋼法蘭截止閥[J41Y]。法蘭截止閥主要設(shè)計(jì)參數(shù):截止閥的啟閉件是塞形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運(yùn)動(dòng)。截止閥只適用于全開和全關(guān)，不允許作調(diào)節(jié)和節(jié)流。截止閥屬于強(qiáng)制密封式閥門，所以在閥門關(guān)閉時(shí)，必須向閥瓣施加壓力，以強(qiáng)制密封面不泄漏。當(dāng)介質(zhì)由閥瓣下方進(jìn)入閥門時(shí)，操作力所需要克服的阻力，是閥桿和填料的摩擦力與由介質(zhì)的壓力所產(chǎn)生的推力，關(guān)閥門的力比開閥門的力大，所以閥桿的直徑要大，否則會(huì)發(fā)生閥桿頂彎的故障。

上海唐京閥門有限公司截止閥類主要產(chǎn)品有: [節(jié)流閥]、[高壓節(jié)流閥]、[截止節(jié)流平衡閥]、[J41T、J41W鑄鐵截止閥]、[J41H鑄鋼截止閥]、 [J41W不銹鋼截止閥]、[J41Y-100I鉻鉬鋼截止閥]、[J41W-16T黃銅截止閥]、[J41F-6S、J11F-6S塑料截止閥]、[鍛鋼截止閥]、[法蘭截止閥]、[焊接式截止閥]、[內(nèi)螺紋截止閥]、[J61Y-P54/170V高溫高壓截止閥]、[J941H、J961Y]電動(dòng)截止閥、[J441H正齒輪傳動(dòng)截止閥]、[J541H傘齒傳動(dòng)輪截止閥]、[BJ41H、BJ45H保溫截止閥]、[J41Y/J61Y高溫截止閥]、[J41H、J61H高壓截止閥]、 [J45/J65Y直流式截止閥、Y形截止閥]、[J41、J61自密封高壓截止閥]、[WJ41H、WJ44H、WJ45H、WJ61H、WJ11H波紋管截止閥]、[JY41W氧氣截止閥]、[NKJ41H、NKJ44H、NKJ61真空隔離截止閥]、[DSJ41H、DSJ61H水封截止閥]、[J41B、J42B、J61B、J21B、J11B氨用截止閥]、[J44、J64角式截止閥]、[J41F4、J45F4襯氟截止閥]、[J41J、J45J襯膠截止閥]、 [J41N液化石油氣截止閥、天燃?xì)饨刂归y、煤氣截止閥]、[DJ41W、DJ61W低溫截止閥]、[J41H撞擊式截止閥]。[WJ41H、J41H蒸汽截止閥]。[YJ41F抗生素截止閥]、 [FJ41Y節(jié)流截止放空閥]。[TPJ41Y節(jié)流截止排污閥]。