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螺纹连接安全阀A21Y/H/F/W
| 要性能规范：Main technical data | ||||
| 型号 Type | A21F-18 | A21H-16、25、40、64 | A21W-16P、25P、40P、64P | |
| 密封试验压力 MPa sealing test pressure |
Ps<0.3时，Ps-0.03 Ps≥0.3时 90%整定压力 setting pressure | |||
| 排放压力 MPa built-up pressure |
≤1.1 x 整定压力 setting pressure | |||
| 回座压力 MPa re-seating pressure |
≥85% 整定压力 setting pressure | |||
| 开启高度 mm Value Lift |
≥1/20 喉径 Throat diameter | |||
| 适用介质 Suitable medium |
空气、非腐蚀性的气体 air,non-corrosiveness gas |
弱腐蚀性气体 Feebly-corrosive gas |
强腐蚀性气体 corrosive gas |
|
| 适用温度 ℃ Suitable temperatur8 |
-40～50 | ≤200℃ | ≤150℃ | |
| 排量系数 coefficient of dischange |
0.2 | |||
| 主要外形尺寸及连接尺寸 Main size of Appearance | ||||||||
| 公称压力 MPa Norminal pressure |
公称通径 Inside Norminal Diameter |
d0 | d | D0 | L | L1 | H | 出口螺纹 Discharge thread |
| 1.6～4.0 | 15 | 12 | 15 | 20 | 35 | 60 | 64 | G1/2 |
| 20 | 16 | 20 | 25 | 40 | 68 | 68 | G3/4 | |
| 25 | 20 | 25 | 31 | 50 | 78 | 103 | G1 | |
| 6.4 | 10 | 16 | 25 | 50 | 80 | 105 | ||