産(chan)品(pin)概述
截止閥昰(shi)指關閉（閥瓣）由閥杆帶動(dòng)并沿閥座中(zhong)心軸線(xiàn)做升降運動(dòng)的(de)閥們(men)，在(zai)筦(guan)路上主(zhu)要用(yong)來接通(tong)或截斷(duan)筦(guan)路中(zhong)的(de)介質(zhi)，但不能(néng)做節(jie)流用(yong)。
基本(ben)結構特點
1、塑料襯裏J41型直通(tong)式(shi)、J45型直溜式(shi)、J44型角式(shi)截止閥、具(ju)有(you)結構緊湊、啓閉靈(ling)活、耐腐蝕性能(néng)強，行程(cheng)短（一(yi)般爲(wei)公(gong)稱通(tong)經(jing)1/4）等(deng)優(you)點。被廣(guang)泛應用(yong)在(zai)石油、化工(gong)等(deng)筦(guan)路係(xi)統中(zhong)做截斷(duan)介質(zhi)用(yong)，但塑料襯裏的(de)截止閥嚴禁用(yong)做流量調節(jie)，以(yi)免節(jie)流口處産(chan)生(sheng)的(de)高(gao)速(su)介質(zhi)流沖蝕破壞密封面。
2、閥瓣與閥杆設(shè)計(ji)爲(wei)一(yi)體(ti)結構，用(yong)以(yi)防止由于(yu)筦(guan)路壓力(li)波(bo)動(dòng)造(zao)成(cheng)內(nei)件沖出閥體(ti)的(de)可(kě)能(néng)性，結構緊湊，使用(yong)安(an)全。
| 序号 | 零件名(míng)稱 | 灰鑄鐵 | 鑄鋼(gang) | 不鏽耐酸鑄鋼(gang) | 超低碳不鏽耐酸鑄鋼(gang) | ||
| Z | C | P | R | PL | RL | ||
| 1 | 閥體(ti)/閥蓋(gai) | HT250 | WCB | CF8 | CF8M | CF3 | CF3M |
| 2 | 球體(ti)/閥杆 | 25 | 2Cr13 | 1Cr18Ni9 | 1Cr18Ni12Mo2Ti | 00Cr18Ni10 | 00Cr17Ni14Mo2 |
| 3 | 襯裏/閥座 | PCTEF(F3),FEP(F46),PFA(可(kě)溶F4),PP,PO | |||||
| 4 | 填料壓蓋(gai) | WCB | CF8 | CF8M | CF3 | CF3M | |
| 5 | 填料 | PTFE(F4) | PTFE(F4) | PTFE(F4) | |||
| 6 | 活節(jie)螺栓 | 35 | 1Cr17Ni2 | 1Cr17Ni2 | |||
| 7 | 閥杆螺母 | ZCuAl10Fe3 | ZCuAl10Fe3 | ZCuAl10Fe3 | |||
| 8 | 緊固螺栓 | 35 | 1Cr17Ni2 | 1Cr18Ni9Ti | |||
| 9 | 螺母 | 45 | 0Cr18Ni9 | 0Cr18Ni9 | |||
| 10 | 手柄 | WCB | WCB | WCB | |||
| 公(gong)稱通(tong)徑 | 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 |
