| 气动薄膜调节阀的允许压差,允许压差分气开式和气关式,下面分别列表讲述。 气开式 单位:MPa | 膜片有效面积Ae(cm2) | 280 | 400 | 600 | | 信号范围Pr(KPa) | 20-100 | 40-200 | 20-100 | 40-200 | 20-100 | 40-200 | | 气源压力Ps(Mpa) | 0.14 | 0.25 | 0.14 | 0.25 | 0.14 | 0.25 | | 需配附件 | - | P | - | P | - | P | | 公 称 通 径 DN (mm) 及 阀 座 直 径 d (mm) | 20 | 10 | 5.35 | 6.40 | | | | | | 12 | 3.72 | 6.40 | | | | | | 15 | 2.38 | 5.55 | | | | | | 20 | 1.34 | 3.12 | | | | | | 25 | 25 | 0.86 | 2.00 | | | | | | 32 | 32 | | | 0.75 | 1.74 | | | | 40 | 25 | | | 1.22 | 2.85 | | | | 32 | | | 0.75 | 1.74 | | | | 40 | | | 0.48 | 1.11 | | | | 50 | 32 | | | 0.75 | 1.74 | | | | 40 | | | 0.48 | 1.11 | | | | 50 | | | 0.31 | 0.71 | | , | | 65 | 65 | | | | | 0.27 | 0.63 | | 80 | 50 | | | | | 0.46 | 1.07 | | 65 | | | | | 0.27 | 0.63 | | 80 | | | | | 0.18 | 0.42 | | 100 | 65 | | | | | 0.27 | 0.63 | | 80 | | | | | 0.18 | 0.42 | | 100 | | | | | 0.11 | 0.23 | 80-240KPa弹簧是40-200Kpa弹簧允许压差的2倍 气关式 | 膜片有效面积Ae(cm2) | 280 | 400 | 600 | | 信号范围Pr(KPa) | 20-100 | 20-100 | 40-200 | 20-100 | 20-100 | 40-200 | 20-100 | 20-100 | 40-200 | | 气源压力Ps(MPa) | 0.14 | 0.14 | 0.25 | 0.14 | 0.14 | 0.25 | 0.14 | 0.14 | 0.25 | | 需配附件 | - | P | P | - | P | P | - | P | P | | 公 称 通 径 DN (mm) 及 阀 座 直 径 d (mm) | 20 | 10 | 5.35 | 6.40 | 6.40 | | | | | | | | 12 | 3.72 | 6.40 | 6.40 | | | | | | | | 15 | 2.33 | 5.55 | 6.40 | | | | | | | | 20 | 1.34 | 3.12 | 4.01 | | | | | | | | 25 | 25 | 0.86 | 2.00 | 2.57 | | | | | | | | 32 | 32 | | | | 0.75 | 1.74 | 2.24 | | | | | 40 | 25 | | | | 1.22 | 2.85 | 3.67 | | | | | 32 | | | | 0.75 | 1.74 | 2.24 | | | | | 40 | | | | 0.48 | 1.11 | 1.48 | | | | | 50 | 32 | | | | 0.75 | 1.74 | 2.24 | | | | | 40 | | | | 0.48 | 1.11 | 1.48 | | | | | 50 | | | | 0.31 | 0.71 | 0.91 | | | | | 65 | 65 | | | | | | | 0.27 | 0.63 | 0.81 | | 80 | 50 | | | | | | | 0.46 | 1.07 | 1.38 | | 65 | | | | | | | 0.27 | 0.63 | 0.81 | | 80 | | | | | | | 0.18 | 0.42 | 0.52 | | 100 | 65 | | | | | | | 0.27 | 0.63 | 0.81 | | 80 | | | | | | | 0.18 | 0.42 | 0.52 | | 100 | | | | | | | 0.11 | 0.26 | 0.34 | 1、 P:阀门定位器 2、允许压差超过上述数值可告知本公司技术科另行解决。 |