中国台湾荣牌横式止回阀又称单向阀或逆止阀，其作用是防止管路中的介质倒流。启闭件靠介质流动和力量自行开启或关闭，以防止介质倒流的阀门叫止回阀。止回阀属于自动阀类，主要用于介质单向流动的管道上，只允许介质向一个方向流动，以防止发生事故。本类阀门在管道中一般应当水平安装。
| | ITEM | PARTS | MATERIAL | | 1 | BODY | ASTM A351-CF8M/1.4408 | ASTM A351-CF8/1.4308 | | 2 | DISC | | 3 | NUT | AISI 304 | | 4 | ARM HINGE | ASTM A351-CF8M/1.4408 | ASTM A351-CF8/1.4308 | | 5 | HINGE PIN | AISI 316 | AISI 304 | | 6 | SEAL | PTFE/304+GRAPHITE | | 7 | BONNET | ASTM A351-CF8M/1.4408 | ASTM A351-CF8/1.4308 | | 8 | SPRING WASHER | AISI 304 | | 9 | BONNET BOLT | | 10 | BOLT |
* 8" UP GASKET:304+GRAPHITE |
| |
| DN | d | CLASS 150 | CLASS 300 | PN 16 | | L | H | L | H | L | H | | 15 | 15 | 108 | 51 | 152 | 61 | 130 | 51 | | 20 | 20 | 117 | 54 | 178 | 61 | 150 | 54 | | 25 | 25 | 127 | 64 | 203 | 79 | 160 | 64 | | 32 | 32 | 140 | 68 | - | - | 180 | 68 | | 40 | 40 | 165 | 75 | 229 | 93 | 200 | 75 | | 50 | 50 | 203 | 97 | 267 | 127 | 230 | 97 | | 65 | 65 | 216 | 111 | 292 | 144 | 290 | 111 | | 80 | 80 | 241 | 120 | 318 | 154 | 310 | 120 | | 100 | 100 | 292 | 162 | 356 | 196 | 350 | 162 | | 125 | 125 | 330 | 179 | 400 | 217 | 400 | 179 | | 150 | 150 | 356 | 203 | 444 | 230 | 480 | 203 | | 200 | 200 | 495 | 236 | 533 | 265 | 600 | 236 | | 250 | 250 | 622 | 302 | 622 | 319 | 730 | 302 | | 300 | 300 | 698 | 340 | - | - | 850 | 340 | | 350 | 337 | 787 | 385 | - | - | - | - |
|
|
|
