一、产品概述Product Overview：
气动薄膜单座调节阀由气动薄膜执行机构和调节阀两大部分组成，它与气动调节器，减压阀、定位器或其他仪表配合使用，达到控制管道内的温度、压力、液位、流量等工艺参数。单座调节阀具有易密封，泄漏量小的优点，但平衡力较大，故工作压差不宜过高。双座调节阀具有流量系数大，不平衡力较小的特点，因而使用广泛.
Thin-film single-seat pneumatic control valve by the pneumatic diaphragm actuator and control valve of two parts, with pneumatic regulator, reducing valve, positioning, or used in conjunction with other instruments, to control the temperature inside the tubes, pressure, level, flow and other process parameters. Single-seat control valve with easy to seal, leakage of small advantages, but a large counterweight, the working pressure should not be too high. Seat valve with a flow coefficient, the unbalanced force of smaller features, which are widely used.
二、气动薄膜单座调节阀性能参数Performance parameters：
DN/mm | PN | 环境温度Ambient temperature/℃ | 固有流量特性 Inherent flow characteristic | 气源zui大压力Maximum pressure gas source/MPa | |||||
25～300 | 16，40，64 | -30～60 | 直线、等百分比Linear, equal percentage | 0.25 | |||||
DN /mm | 流通能力Flow capacity | 行程/mm | 配用执行器型号 Models equipped with actuators | 灰铸铁阀 Gray cast iron valve | |||||
单座Single-seat | 双座Seat | PN | 工作压力/MPa | 介质温度Medium temperature/℃ | |||||
25 | 8 | 10 | 16 | ZMA-2 | 16 | 1.6 | ≤200 | ||
32 | 12 | 16 | |||||||
40 | 20 | 25 | 25 | ZMA-3 | |||||
50 | 32 | 40 | |||||||
65 | 50 | 63 | 40 | ZMA-4 | |||||
80 | 80 | 100 | |||||||
100 | 120 | 160 | |||||||
125 | 200 | 250 | 60 | ZMA-5 | |||||
150 | 280 | 400 | |||||||
200 | 450 | 630 | |||||||
250 | 1000 | 100 | ZMA-6 | ||||||
300 | 1600 | ||||||||
三、主要零件材料Materials for main parts:
PN | 阀体、上阀盖、下阀盖 Valve body, bonnet, under bonnet | 阀芯、阀杆、阀座 Valve, stem, seat | 垫片 Gasket | 填料 Filler |
16 | HT200 | 1Cr18Ni9 | 石棉橡胶板 Asbestos Rubber Sheet | 聚四氟乙烯 PTFE |
40 | ZG25 | 1Cr18Ni9 | ||
64 | 1Cr18Ni9 | 1Cr18Ni9 |
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