歐通截止閥屬于強(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。按連接方式分為三種：法蘭連接、絲扣連接、焊接連接。從自密封的閥門出現(xiàn)后，截止閥的介質(zhì)流向就改由閥瓣上方進(jìn)入閥腔，這時(shí)在介質(zhì)壓力作用下，關(guān)閥門的力小，而開閥門的力大，閥桿的直徑可以相應(yīng)地減少。同時(shí)，在介質(zhì)作用下，這種形式的閥門也較嚴(yán)密。系列產(chǎn)品：進(jìn)口截止閥、高壓截止閥。高溫截止閥。高壓高溫截止閥。電動(dòng)截止閥J941H/J961Y。氣動(dòng)截止閥J641H。氣動(dòng)角座閥。日標(biāo)截止閥J41W。德標(biāo)截止閥。美標(biāo)截止閥J41W。保溫截止閥BJ41H/BJ45。高溫截止閥J41Y/J61Y。高壓截止閥J41H、對(duì)焊截止閥J61Y/J65Y/J64H。高溫高壓截止閥。Y形截止閥J45/J65Y。自密封截止閥J41W/J61W。黃銅截止閥J11W。鑄鐵截止閥J41TW。鑄鋼截止閥J41H。鍛鋼截止閥。不銹鋼截止閥J41W。鉻鉬鋼截止閥J41Y-100I。波紋管截止閥WJ41/WJ44/WJ61H、保溫波紋管截止閥BWJ41W。絲口截止閥J11W。法蘭截止閥J41。氧氣截止閥JY41W。真空截止閥NKJ41H/44H/J61。水封截止閥DS41H/DS61H。傘齒輪截止閥J541H。氨用截止閥J41B/J42B/J61B/J21B/J11B。角式截止閥J44H。襯氟截止閥J41F4/J45F4。襯膠截上閥J41J/J45J。塑料截止閥J41F-6S、J11F-6S。液化氣截止閥J41F。天燃?xì)饨刂归yJ41N。低溫截止閥DJ41W。撞擊式大口徑截止閥。蒸汽截止閥。斯派沙克式截止閥。節(jié)流閥、高壓節(jié)流閥、截止節(jié)流平衡閥L41Y/L44Y/L46Y/L86Y/L87Y/L66Y/L67Y/L47Y。節(jié)流截止放空閥FJ41Y。節(jié)流截止排污閥TPJ41Y。 閥體的材質(zhì)有: 鑄鐵、鑄鋼、不銹鋼、鍛鋼、鉻鉬鋼、鉻鉬釩鋼。工作壓力1.6-32MPA(美標(biāo)從150LB-2500LB，日標(biāo)從10K-64K)。工作溫度-20