ZXT ZSQT pneumatic thin film, piston diaphragm regulating valve (referred to as pneumatic diaphragm valve) adopts the "mountain" shaped protruding surface between the diaphragm and the valve body for sealing, isolated from the outside world (without stuffing box), the flow path of the valve body is simple, smooth, and can be covered with anti-corrosion layer, suitable for corrosion resistance and highly toxic occasions.
The nominal pressure classes of this series of products are 0.6 and 1.0MPa, the diameter of the valve body ranges from 20 to 200mm, the applicable temperature ranges within 150℃, the leakage volume is zero.
Note: parameters are for reference only, or incomplete. Valves can be selected according to the requirements of different pressure, material, diameter, driving mode. Please contact us by phone or online.
阀体衬里 |
使用温度(℃) |
适用介质 |
无衬里 |
-10~+175 |
适用于非腐蚀性介质 |
软橡胶 |
-10~+85 |
有很好的耐磨性能,适用于水泥、粘土、煤尘、干燥化肥等 |
硬橡胶 |
-10~+85 |
适用于无机械、盐类、盐酸、镀金属溶液、软水、氯化物、氯气等 |
氯丁胶 |
-10~+105 |
适用于动物油、植物油和润滑油,PH值变化范围很大的腐蚀性泥浆。抗磨损性能良好 |
丁荃胶 |
-10~+120 |
防腐性能和耐磨性能良好,对大部分无机酸和酸性灰浆的耐蚀性最好 |
搪瓷 |
-10~+175 |
适用于温无机酸、氧化酸、卤素、醇类、酯类等化合物 |
氟46 |
-10~+190 |
适用于硫酸、盐酸、氢氧化钠等强腐蚀介质 |
隔膜材质 |
使用温度(℃) |
适用介质 |
丁荃胶(B级) |
-40~+100 |
大部分无机酸如:硫酸、氢氟酸、磷酸等适用,耐蚀性好,同时而各种碱和盐类 |
天然胶(Q级) |
-50~+100 |
主要用于净化水、无机盐和烯的矿物酸介质 |
聚四氟乙烯 |
-10~+150 |
极优的化学稳定性、耐强酸、浓碱、强氧化剂的腐蚀 |
公称通径DN(mm) |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
|
额定流量系数Kv |
无衬里 |
9.8 |
19 |
32 |
48 |
63 |
108 |
158 |
270 |
360 |
518 |
1114 |
有衬里 |
7.8 |
17 |
28 |
41 |
55 |
87 |
127 |
240 |
311 |
415 |
1121 |
|
额定行程L(mm) |
8 |
10 |
12 |
16 |
24 |
30 |
34 |
36 |
44 |
55 |
65 |
|
膜片有效面积Ae(cm 2 ) |
280 |
400 |
600 |
1000 |
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活塞直径(mm) |
100 |
125 |
160 |
250 |
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公称压力PN(MPa) |
0.6 1.0 |
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固有流量特性 |
近似等百分 |
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工作温度(℃) |
≤150 |
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信号范围Pr(KPa) |
20~100、40~200、400~600 |
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允许泄漏量 |
在允许压差范围内泄漏量为零 |
法兰标准:铸铁法兰按GB4216-84
铸钢法兰按GB9113-88
法兰密封面型式:凸面
执行机构气信号接头:内螺纹M16×1.5
结构长度:GB12221-89
阀体法兰端面距及法兰标准也可按用户指定标准制造 如:ANSI、JIS、DIN等标准