本結(jié)構(gòu) 1、塑料襯里J41型直通式、J45型直溜式、J44型角式截止閥、具有結(jié)構(gòu)緊湊、啟閉靈活、耐腐蝕性能強(qiáng),行程短(一般為公稱通經(jīng)1/4)等優(yōu)點(diǎn)。被廣泛應(yīng)用在石油、化工等管路系統(tǒng)中做截?cái)嘟橘|(zhì)用,但塑料襯里的截止閥嚴(yán)禁用做流量調(diào)節(jié),以免節(jié)流口處產(chǎn)生的高速介質(zhì)流沖蝕破壞密封面。 2、閥瓣與閥桿設(shè)計(jì)為一體結(jié)構(gòu),用以防止由于管路壓力波動(dòng)造成內(nèi)件沖出閥體的可能性,結(jié)構(gòu)緊湊,使用安全。 設(shè)計(jì)規(guī)范 遵循GB/T 12233,GB/T12235,ANSI B 16.34標(biāo)準(zhǔn) 驅(qū)動(dòng)方式 手動(dòng)、蝸輪轉(zhuǎn)動(dòng)、氣動(dòng)(常開或常閉)、電動(dòng) | | 主要零部件材料表 | 序號(hào) | 零件名稱 | 灰鑄鐵 | 鑄鋼 | 不銹耐酸鑄鋼 | 超低碳不銹耐酸鑄鋼 | Z | C | P | R | PL | RL | 1 | 閥體/閥蓋 | HT250 | WCB | CF8 | CF8M | CF3 | CF3M | 2 | 球體/閥桿 | 25 | 2Cr13 | 1Cr18Ni9 | 1Cr18Ni12Mo2Ti | 00Cr18Ni10 | 00Cr17Ni14Mo2 | 3 | 襯里/閥座 | PCTEF(F3),FEP(F46),PFA(可溶F4),PP,PO | 4 | 填料壓蓋 | WCB | CF8 | CF8M | CF3 | CF3M | 5 | 填料 | PTFE(F4) | PTFE(F4) | PTFE(F4) | 6 | 活節(jié)螺栓 | 35 | 1Cr17Ni2 | 1Cr17Ni2 | 7 | 閥桿螺母 | ZCuAl10Fe3 | ZCuAl10Fe3 | ZCuAl10Fe3 | 8 | 緊固螺栓 | 35 | 1Cr17Ni2 | 1Cr18Ni9Ti | 9 | 螺母 | 45 | 0Cr18Ni9 | 0Cr18Ni9 | 10 | 手柄 | WCB | WCB | WCB | 公稱通經(jīng) | L | D | D1 | D2 | f | b | Z-φd | DN(mm) | NPS(inch) | PN1.0MPa | 15 | 1/2 | 90 | 95 | 65 | 45 | 2 | 14 | 4-φ14 | 20 | 3/4 | 95 | 105 | 75 | 55 | 2 | 16 | 4-φ14 | 25 | 1 | 100 | 115 | 85 | 65 | 2 | 16 | 4-φ14 | 32 | 11/4 | 105 | 135 | 100 | 78 | 2 | 18 | 4-φ18 | 40 | 11/2 | 115 | 145 | 110 | 85 | 3 | 18 | 4-φ18 | 50 | 2 | 125 | 160 | 125 | 100 | 3 | 20 | 4-φ18 | 65 | 21/2 | 145 | 180 | 145 | 120 | 3 | 20 | 4-φ18 | 80 | 3 | 155 | 195 | 160 | 135 | 3 | 22 | 4-φ18 | 100 | 4 | 175 | 215 | 180 | 155 | 3 | 22 | 8-φ18 | 125 | 5 | 200 | 245 | 210 | 185 | 3 | 24 | 8-φ18 | 150 | 6 | 225 | 280 | 240 | 210 | 3 | 24 | 8-φ23 | 200 | 8 | 275 | 335 | 295 | 265 | 3 | 26 | 8-φ23 | 250 | 10 | 325 | 390 | 350 | 320 | 3 | 28 | 12-φ23 | 300 | 12 | 375 | 440 | 400 | 368 | 4 | 28 | 12-φ23 | PN1.6MPa | 15 | 1/2 | 90 | 95 | 65 | 45 | 2 | 14 | 4-φ14 | 20 | 3/4 | 95 | 105 | 75 | 55 | 2 | 16 | 4-φ14 | 25 | 1 | 100 | 115 | 85 | 65 | 2 | 16 | 4-φ14 | 32 | 11/4 | 105 | 135 | 100 | 78 | 2 | 18 | 4-φ18 | 40 | 11/2 | 115 | 145 | 110 | 85 | 3 | 18 | 4-φ18 | 50 | 2 | 125 | 160 | 125 | 100 | 3 | 20 | 4-φ18 | 65 | 21/2 | 145 | 180 | 145 | 120 | 3 | 20 | 4-φ18 | 80 | 3 | 155 | 195 | 160 | 135 | 3 | 22 | 8-φ18 | 100 | 4 | 175 | 215 | 180 | 155 | 3 | 24 | 8-φ18 | 125 | 5 | 200 | 245 | 210 | 185 | 3 | 26 | 8-φ18 | 150 | 6 | 225 | 280 | 240 | 210 | 3 | 28 | 8-φ23 | 200 | 8 | 275 | 335 | 295 | 265 | 3 | 30 | 8-φ23 | PN2.5MPa | 15 | 1/2 | 90 | 95 | 65 | 45 | 2 | 16 | 4-φ14 | 20 | 3/4 | 95 | 105 | 75 | 55 | 2 | 16 | 4-φ14 | 25 | 1 | 100 | 115 | 85 | 65 | 2 | 16 | 4-φ14 | 32 | 11/4 | 105 | 135 | 100 | 78 | 2 | 18 | 4-φ18 | 40 | 11/2 | 115 | 145 | 110 | 85 | 3 | 18 | 4-φ18 | 50 | 2 | 125 | 160 | 125 | 100 | 3 | 20 | 4-φ18 | | |