氣動隔膜閥于控制非腐蝕性或一般腐蝕性介質，閥體內腔表面無襯里或覆有可供選擇的各種橡膠，適用于不同工作溫度和流體管路。適用溫度：≤85℃、≤100℃、 ≤120℃、≤150℃（按照襯里和隔膜材料）。壓力等級：PN0.6、1.0、1.6。
氣動隔膜閥（常閉式）技術規(guī)范
| 設計規(guī)范 | 結構長度 | 連接法蘭 | 試驗與檢驗 | 產品標識 | 供貨規(guī)范 |
| Design spec | Face to face | Flange ends | Test and inspection | Marking | Supply |
| GB12239 | GB12221、JB1688 | GB4216/JB78 | BS 13927 | BS 12220 | BS 7928 |
| 序號 NO | 零件名稱 Name of parts | 灰鑄鐵 | 鑄鋼 | 不銹耐酸鑄鋼 | 超低碳不銹耐酸鑄鋼 | ||
| Gray cast iron | Cast steel | Stainless acid resistant cast steel | Stainless acid resistant cast steel | ||||
| Z | C | P | R | PL | RL | ||
| 1 | 閥體/閥蓋 Body/bonnet | HT250 | WCB | CF8 | CF8M | CF3 | CF3M |
| 2 | 閥瓣/閥桿 Disc/Stem | HT250 | 1Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 00Cr18Ni10 | 00Cr17Ni14Mo2 |
| 3 | 襯里/閥座 Lining/Seat | 天然膠（Natural rubber）、丁基膠（Isobutylene-isoprene rubber）、PTFE（F4）、FEP（F46） | |||||
| 4 | 隔膜 Diaphragm | 橡膠、氟塑料 Rubber, fluoro plastic | |||||
| 5 | 氣缸 Cylinder | 球墨鑄鐵 Spheroidal graphite cast iron | |||||
| 6 | 活塞 Piston | WEB | |||||
| 7 | 手輪 Hand wheel | HT250 | |||||
| 公稱壓力Nominal pressure | 工作壓力Working pressure | 通徑 Diameter | L | D | D1 | N-φd | F | H1 | D0 | B | 代號Code | 氣源壓力Air pres- sure （MPa） | 氣源接頭Air joint （in | 耗氣量Air consum- ption（c | 重量Weight kg/kilo | |
| mm | inch | |||||||||||||||
| 0.6 | 0.6 | 15 | 1/2 | 125 | 95 | 65 | 4-14 | 2 | | | | | | | | |
| 20 | 3/4 | 139 | 105 | 75 | 4-14 | 2 | | | | | | | | | ||
| 25 | 1 | 145 | 115 | 85 | 4-18 | 2 | 296 | 310 | 120 | 94 | 0.4 | 10×1 | 2.395×102 | 8 | ||
| 32 | 11/4 | 160 | 140 | 100 | 4-18 | 2 | 398 | 416 | 140 | 120 | 0.4 | 12×1.25 | 6.082×102 | 15 | ||
| 40 | 11/2 | 180 | 150 | 110 | 4-18 | 3 | 406 | 426 | 140 | 120 | 0.4 | 12×1.25 | 6.082×102 | 17.5 | ||
| 50 | 2 | 210 | 165 | 125 | 4-18 | 3 | 464 | 489 | 160 | 185 | 0.4 | 12×1.25 | 1.235×103 | 26 | ||
| 65 | 21/2 | 250 | 185 | 145 | 4-18 | 3 | | | 160 | | 0.5 | | | 32 | ||
| 80 | 3 | 300 | 200 | 160 | 4-18 | 3 | 645 | 685 | 200 | 245 | 0.5 | 16×1.5 | 3.725×103 | 56.5 | ||
| 100 | 4 | 350 | 220 | 180 | 8-18 | 3 | 710 | 760 | 240 | 330 | 0.5 | 16×1.5 | 9.458×103 | 94.5 | ||
| 125 | 5 | 400 | 250 | 210 | 8-18 | 3 | 832 | 900 | 320 | 380 | 0.5 | 20×1.5 | 1.409×104 | 170 | ||
| 150 | 6 | 460 | 285 | 240 | 8-22 | 3 | 933 | 113 | 320 | 470 | 0.5 | 20×1.5 | 2.868×104 | 229 | ||
| | 0.4 | 200 | 8 | 570 | 340 | 295 | 8-22 | 4 | 1275 | 1395 | 400 | 470 | 0.5 | 20×1.5 | 4.619×104 | 387 |
| 250 | 10 | 680 | 395 | 350 | 12-22 | 4 | | | | | | | | | ||
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