|
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氣動薄膜單座調(diào)節(jié)閥由氣動薄膜執(zhí)行機構(gòu)和調(diào)節(jié)閥兩大部分組成，它與氣動調(diào)節(jié)器，減壓閥、定位器或其他儀表配合使用，達到控制管道內(nèi)的溫度、壓力、液位、流量等工藝參數(shù)。單座調(diào)節(jié)閥具有易密封，泄漏量小的優(yōu)點，但平衡力較大，故工作壓差不宜過高。雙座調(diào)節(jié)閥具有流量系數(shù)大，不平衡力較小的特點，因而使用廣泛.
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、性能參數(shù)Performance parameters：
|
DN/mm
|
PN
|
環(huán)境溫度Ambient temperature/℃
|
固有流量特性 Inherent flow characteristic
|
氣源最大壓力Maximum pressure gas source/MPa
|
|||||
|
25～300
|
16，40，64
|
-30～60
|
直線、等百分比Linear, equal percentage
|
0.25
|
|||||
|
DN
/mm
|
流通能力Flow capacity
|
行程/mm
|
配用執(zhí)行器型號 Models equipped with actuators |
灰鑄鐵閥 Gray cast iron valve
|
|||||
|
單座Single-seat
|
雙座Seat
|
PN
|
工作壓力/MPa
|
介質(zhì)溫度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:
