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雙偏心半球球閥概述
雙偏心半球球閥利用偏心閥體，偏心球體和閥座，閥桿作旋轉(zhuǎn)運(yùn)動(dòng)時(shí)在共同軌跡自動(dòng)定心，關(guān)閉過(guò)程中越關(guān)越緊，完全達(dá)到良好的密封目的。閥門的球體和閥座完全脫離，消除了密封圈的磨損，克服了傳統(tǒng)球體閥座與球體密封面始終磨損的問(wèn)題，非金屬?gòu)椥圆牧媳磺度虢饘僮?，閥座金屬面受到良好的保護(hù)。本產(chǎn)品特別適用于鋼鐵業(yè)，鋁業(yè)，纖維，微小固體顆粒，紙漿，煤灰，石油氣等介質(zhì)。
雙偏心半球球閥執(zhí)行標(biāo)準(zhǔn)
設(shè)計(jì)：gb12237－89
法蘭連接：gb/t17241.6－1998、gb/t9115（鋼制）
結(jié)構(gòu)長(zhǎng)度：gb12221－89
雙偏心半球球閥主要零件材料
名稱 | 材質(zhì) |
閥體 | qt450、wcb、zg20crmo、zg1cr18ni9ti |
閥軸 | 2cr13、1cr13 |
閥瓣 | 合金滲氮鋼、滲氮不銹鋼、耐磨鋼 |
閥座 | 合金滲氮鋼、滲氮不銹鋼、耐磨鋼 |
軸承 | 鋁青銅、fz－1復(fù)合材料 |
填料 | 聚四氟乙烯、柔性石墨 |
雙偏心半球球閥性能參數(shù)
公稱壓力（mpa） | 0.6 | 1.0 | 1.6 | 2.5 | 4.0 |
公稱通經(jīng)（mm） | 40－1600 | 40－1600 | 40－1200 | 40－600 | 40－600 |
密封試驗(yàn)壓力（mpa） | 0.66 | 1.1 | 1.76 | 2.75 | 4.4 |
殼體試驗(yàn)壓力（mpa） | 0.9 | 1.5 | 2.4 | 3.75 | 6.0 |
適用溫度（℃） | －29～300、－29～425、－29～540 |
適用介質(zhì) | 清水、海水、污水、酸堿等液體、料漿、蒸汽、燃?xì)?、油?/div> |
驅(qū)動(dòng)方式 | 手動(dòng)、電動(dòng)、氣動(dòng) |
連接形式 | 法蘭連接、對(duì)夾連接 |
安裝方式 | 立式安裝、臥式安裝 |
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本產(chǎn)品的品牌是新然，型號(hào)是Q340F/H/Y，材質(zhì)是不銹鋼，鑄鋼，連接形式是法蘭，結(jié)構(gòu)形式是固定球球閥，公稱通徑是40-600（mm），適用介質(zhì)是-，壓力環(huán)境是0.6-4.0，工作溫度是-，標(biāo)準(zhǔn)是國(guó)標(biāo)，流動(dòng)方向是雙向，驅(qū)動(dòng)方式是手動(dòng)，零部件及配件是多種，用途是調(diào)節(jié)，類型(通道位置)是直通式，作用對(duì)象是通用