气动薄膜波纹管调节阀

概述

  ZMAP-W、ZMAN-W型气动薄膜波纹管调节阀由气动薄膜执行机构和波纹管密封的单双座阀两部分组成。其阔芯部件采用波纹管密封结构，上阀盖顶端仍有填料密封，形成两道密封， 可严格防止介质向外泄漏，因此适用于调节剧毒、 贵重、易挥发或易渗透的工艺介质。

1、主要技术参数

公称通径DN(mm)          25                  32                  40                  50                  65                  80                  100

阀座直径DN(mm)          26，24            32，30            40，38            50，48            66，64            80，78            100，98

额定流量系数Kv             10                  16                  25                  40                  63                  100                 160

流量特性                        直线；等百分比

公称压力PN(MPa)          1.0，1.6，4.0

连接型式                        法兰连接：按JB79标准

配用执行机构型号            ZMA-2                                  ZMA-3                                  ZMA-4

有效面积Fe(cm2)           280                                      400                                      630

行程L(mm)                   16                                        25                                        40

作用方式                        气关式；气开式

弹簧压力范围（KPa)        标准20-100，可选用4-200、20-60,60-100

供气压力（MPa)             标准0.14可选用0.24

气源接头                        M16X1.5

固有可调比K                  30：1

 2、主要技术性能指标

项目                                                         不带阀门定位器                                          带阀门定位器

基本误差%                                                ≤±5                                                        ≤±1

回差%                                                      ≤3                                                          ≤1

死区%                                                      ≤3                                                          ≤0.4

泄漏量                                                      0.01%X阀额定容量

额定流量系数误差%                                    ≤±10

 3、阀体材料和适用温度范围

阀体材料      材料牌号                                                                   公称压力（MPa)                                   适用温度范围（℃）

铸 钢          ZG230-450                                                               1.0,1.6,4.0                                          -40～150

铸不锈钢      ZGlCrl8Ni9Ti
ZG0Cr18Ni12Mo2Ti                                                                                                                             -60～50

4、允许压差

标准组配的气动薄膜波纹管密封双座调节阀建议工作压差不超过IMPa。为确保调节精度，必须配 以阀门定位器。

 5、外形尺寸

公称通径 DN(mm)                           A                                                    L                                                    H     H1

                                                      PN1.0,1.6             PN2.5,4.0             气关式                  气开式                 

25                       φ280                   185                      190                      583                      636                      104

32                                                  200                      210                      585                      638                      107

40                       φ325                   220                      230                      716                      795                      126

50                                                  250                      255                      721                      800                      131

65                       φ410                   275                      285                      1064                    1165                    175

80                                                  300                      310                      1081                    1182                    190

100                                                 350                      355                      1093                    1194                    202