应用:
该类型止回阀用于不锈钢管道系统内,以达到防止流体回流的目的。
技术数据:
若止回阀被安装在一根垂直的管道内,开启阀门所需的压力大约为300-600kpa,最大输送物料压力为800kpa,使用温度范围根据密封件材质的选择而不同,一般常用的三元乙丙橡胶(epdm)是-10℃~ 140℃
材质:
钢制部分:不锈钢304,≤0cr18ni9≥,≤1.4301≥ 不锈钢316l≤00cr17ni14m02≥,≤1.4404≥
密封圈:硅橡胶(vmq),氟橡胶(fpm) 三元乙丙(epdm)
din size | a | b | l | t |
dn15 | 62.5 | 19.0 | 75.0 | 1.5 |
dn20 | 62.5 | 23.0 | 75.0 | 1.5 |
dn25 | 77.5 | 29.0 | 78.0 | 1.5 |
dn32 | 77.5 | 35.0 | 78.0 | 1.5 |
dn40 | 89.0 | 41.0 | 80.0 | 1.5 |
dn50 | 105.0 | 53.0 | 86.0 | 1.5 |
dn65 | 134.0 | 70.0 | 97.0 | 2.0 |
dn80 | 145.0 | 85.0 | 105.0 | 2.0 |
dn100 | 158.5 | 104.0 | 105.0 | 2.0 |
3a size | a | b | b | l2 | t | l |
1/2" | 62.5 | 12.7 | 25.4 | 88.6 | 1.65 | 75.0 |
3/4" | 62.5 | 19.05 | 25.4 | 88.6 | 1.65 | 75.0 |
1" | 77.5 | 25.4 | 50.5 | 88.6 | 1.65 | 78.0 |
1 1/2" | 89.0 | 38.1 | 50.5 | 94.3 | 1.65 | 80.5 |
2" | 105.0 | 50.8 | 64.0 | 105 | 1.65 | 86.0 |
2 1/2" | 118.5 | 63.5 | 77.5 | 116 | 1.65 | 97.0 |
3" | 134.0 | 76.2 | 105 | 123.5 | 1.65 | 105 |
4" | 158.5 | 101.6 | 105 | 123.5 | 2.1 | 105 |