详细说明
产品简介:
法兰消声止回阀、上海精工泵前逆止阀可用在清水、污水、海水等介质的排水水泵出口管道上，既能用于防止停泵时有压水流对水泵的冲击，又能防止介质的倒流，保证管线的使用安全。它具有结构新颖、体积小、重量轻、流体阻力小、密封可靠、启闭平稳、使用寿命长、关闭无噪声等特点。
Product Brief Introduction:
The valve is installed at the outlet of pump and suited to prevent media from flowing backwards and eliminate effectively damageable water hammer in pipelines flowing media of fresh water , polluted water , sea water. It has character as followings: modern structure ,small volume ,light weight ,low resistance ,reliable seal ,stable operation , long duration ,small volume.
法兰消声止回阀、上海精工泵前逆止阀主要性能参数:Main Performance Parameters:
| 公称压力Nominal Pressure( bar) | 10 | 16 |
| 适用温度 Suitable Temp ( oC ) | ≤80 |
| 试验压力（MPa）TestingPressure | 壳 体Shell | 1.5 | 2.4 |
| 密 封Seal | 1.1 | 1.76 |
| 适用介质 Suitable Media | 水,弱腐蚀性介质等Water , Weak Metallurgical Industry |
| 结构长度标准Face to face dimensions | GB/T 12221-2005 |
| 法兰连接标准Flange Standard | GB/T 17241.6-98 |
法兰消声止回阀、上海精工泵前逆止阀主要零部件材质:Materials of Main Parts:
| 名 称 Name | 材 料 Material |
| 阀 体 Body | 铸铁，不锈钢 Cast Iron，Stainless Steel |
| 密封圈 Seal Ring | 丁腈橡胶NBR |
| 弹 簧Spring | 不锈钢Stainless Steel |
| 阀盖环Seal Shim Ring | 球墨铸铁或碳钢 Ductile Bronze Carbon Steel |
主要外形尺寸及连接尺寸:Outline Dimensions & Connection Dimensions:
| DN(mm) | L | D | K | P | Z-Φd |
| 25 | 110 | 115 | 85 | 48 | 4-Φ14 |
| 32 | 130 | 140 | 100 | 56 | 4-Φ18 |
| 40 | 140 | 150 | 110 | 63 | 4-Φ18 |
| 50 | 150 | 165 | 125 | 79 | 4-Φ18 |
| 65 | 170 | 185 | 145 | 97 | 4-Φ18 |
| 80 | 180 | 200 | 160 | 110 | 8-Φ18 |
| 100 | 190 | 220 | 180 | 127 | 8-Φ18 |
| 125 | 200 | 250 | 210 | 161 | 8-Φ18 |
| 150 | 210 | 285 | 240 | 180 | 8-Φ23 |
| 200 | 230 | 340 | 295 | 238 | 8-Φ23/12-Φ23 |
| 250 | 250 | 395/405 | 350/355 | 280 | 12-Φ23/12-Φ28 |
| 300 | 270 | 445/460 | 400/410 | 310 | 12-Φ23/12-Φ28 |
| 350 | 290 | 505/520 | 460/470 | 334 | 16-Φ23/16-Φ28 |
| 400 | 310 | 565/580 | 515/525 | 468 | 16-Φ28/16-Φ30S |
注:“/”上面尺寸为PN1.0Mpa尺寸，“/”下面尺寸为PN1.6Mpa尺寸。
Note: There are dimensions of PN1.0Mpa products above “/” and of PN1.6Mpa products under “/”.