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Pneumatic diaphragm regulating valve
Pneumatic diaphragm regulating valve
Product details
ZMAT/ZMBT Pneumatic Diaphragm Control Valve,Corrosion resistant pneumatic control valve,The corrosion-resistant diaphragm regulating valve consists of a diaphragm valve and a pneumatic actuator, and is corrosion-resistantPneumatic diaphragm regulating valveIt is powered by compressed air and regulates the flow rate of fluid medium in process pipelines.
1ZMAT/ZMBTOverview of Pneumatic Diaphragm Control Valve
ZMAT/ZMBTPneumatic diaphragm regulating valveIt consists of a diaphragm regulating valve and a pneumatic diaphragm actuator, which is powered by compressed air to regulate the flow rate of fluid medium in the process pipeline. Adopting the "mountain" between the diaphragm and the valve body'The convex surface is sealed and isolated from the outside world (without a packing box). The valve body flow path is simple, smooth, and can be covered with an anti-corrosion layer, making it particularly suitable for applications that require corrosion resistance and high toxicity.
2、 Application of ZMAT/ZMBT Pneumatic Diaphragm Control Valve
ZMAT/ZMBT pneumatic diaphragm regulating valve has the advantages of low resistance, high flow rate, no leakage, convenience and reliability, fire and explosion prevention due to the use of corrosion-resistant lining valve body and corrosion-resistant diaphragm, no packing box structure, elastic diaphragm throttling element, and smooth valve body flow channel. It is widely used for flow regulation of strong acid, strong alkali, strong corrosion, high viscosity, particle containing, fiber containing, toxic and non polluting media in industrial automation systems. If there is no gas source on site, the same type of electric diaphragm regulating valve can be used instead.
IIIZMAT/ZMBTPneumatic diaphragm regulating valve actuator
The pneumatic diaphragm regulating valve adopts a multi spring actuator, which reduces both height and weight30%The surface of the valve body is coated with multiple materials to avoid direct contact with the medium and withstand the corrosion of highly corrosive media; When the valve is closed, the internal and external leakage is zero, which is particularly suitable for regulating highly toxic media or media that do not allow contamination; The valve body has a simple flow path, low resistance, and a larger rated flow coefficient than single seat and sleeve regulating valves of the same diameter.
4ZMAT/ZMBTMaterial of parts for pneumatic diaphragm regulating valve
Valve body:HT200，ZG230~450Or lining with the above-mentioned materials
Diaphragm: Ding Quan rubber, natural rubber, polytetrafluoroethylene
Valve cover:ZG230~450
Ripple film:dingNitrile rubber clip reinforced polyester fabric
Spring:60SiMn
5ZMAT/ZMBTTechnical parameters of pneumatic diaphragm regulating valve
|
Nominal DiameterDN（mm） |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
|
|
rated flow coefficientKV |
unlined |
9.8 |
19 |
32 |
48 |
63 |
108 |
158 |
270 |
360 |
518 |
1114 |
|
With lining |
7.8 |
17 |
28 |
41 |
55 |
87 |
127 |
240 |
311 |
415 |
1121 |
|
|
rated travelL（mm） |
8 |
10 |
12 |
16 |
24 |
30 |
34 |
36 |
44 |
55 |
65 |
|
|
Effective area of membraneAe（cm2）） |
280 |
400 |
600 |
1000 |
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|
nominal pressurePN（mm） |
0.6 1.0 |
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|
Inherent flow characteristics |
Approximately equal percentage |
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|
Working temperature (℃) |
≤150 |
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|
Signal RangePr（KPa） |
20~100 40~200 400~600 |
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|
Allowable leakage amount |
Zero leakage within the allowable pressure difference range |
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Note: The actuators listed in this table are standard configurations and can be selected according to process requirements
VIZMAT/ZMBTPerformance indicators of pneumatic diaphragm regulating valve
|
Project |
Without valve positioner |
Equipped with valve locator |
|
Basic error% |
±10 |
±1 |
|
Return difference% |
≤8 |
≤1 |
|
Dead zone% |
≤6 |
≤0.4 |
|
leakage rate |
With lining10Rated capacity of valve, without lining5×10Rated capacity of valve |
|
|
Rated flow coefficient error% |
10 |
|
7ZMAT/ZMBTDiaphragm Material and Application of Pneumatic Diaphragm Control Valve
|
Diaphragm material |
Usage temperature |
Applicable Medium |
|
Ding Quan Jiao（BGrade) |
-40~+100 |
Most inorganic acids such as sulfuric acid, hydrofluoric acid, phosphoric acid, etc. are suitable for good corrosion resistance, while various bases and salts |
|
Natural rubber（QGrade) |
-50~+100 |
Mainly used for purifying water, inorganic salts, and dilute mineral acid media |
|
PTFE |
-10~+150 |
Excellent chemical stability, corrosion resistance to strong acids, alkalis, and oxidants |
8ZMAT/ZMBTMaterial and Application of Valve Body Lining for Pneumatic Diaphragm Control Valve
|
Valve body lining |
Operating temperature (℃) |
Applicable Medium |
|
unlined |
-10~+175 |
Suitable for non corrosive media |
|
soft rubber |
-10~+85 |
Has excellent corrosion resistance and wear resistance, suitable for cement, clay, coal dust, dry fertilizers, etc |
|
hard rubber |
-10~+85 |
Suitable for inorganic bases, salts, hydrochloric acid, metal plating solutions, soft water, fluorides, chlorineqiclass |
|
Chloroprene rubber |
-10~+105 |
Suitable for animal oil, vegetable oil, and lubricating oil,PHCorrosive mud with a wide range of value variations. Good anti-wear performance |
|
Ding Quan Jiao |
-10~+120 |
Good anti-corrosion and wear resistance, with good wear resistance for most inorganic acidic mortars |
|
vitreous enamel |
-10~+175 |
Suitable for compounds such as wet inorganic acids, oxidizing acids, halogens, alcohols, esters, etc |
|
fluorine46 |
-20~+190 |
Suitable for strong corrosive media such as sulfuric acid, hydrochloric acid, and sodium hydroxide. |
9ZMAT/ZMBTExternal dimensions of corrosion-resistant pneumatic diaphragm regulating valve
|
Nominal diameterDN（mm） |
L |
A |
H1 |
H |
G（Kg） |
|
20 |
150 |
280 |
52.5 |
400 |
21 |
|
25 |
160 |
280 |
57.5 |
408 |
23.5 |
|
32 |
180 |
280 |
67.5 |
418 |
28 |
|
40 |
200 |
308 |
75 |
464 |
33.5 |
|
50 |
230 |
308 |
82.5 |
487 |
38 |
|
65 |
290 |
394 |
90 |
520 |
65 |
|
80 |
310 |
394 |
100 |
530 |
73 |
|
100 |
350 |
394 |
110 |
550 |
94 |
|
125 |
400 |
498 |
135 |
575 |
160 |
|
150 |
480 |
498 |
150 |
590 |
195 |
|
200 |
600 |
498 |
190 |
630 |
290 |
10ZMAT/ZMBTOrdering Notice for Corrosion Resistant Pneumatic Diaphragm Control Valve
1. Name and model of pneumatic diaphragm regulating valve.
2. Pneumatic diaphragm regulating valve nominal diameter（mm）Nominal pressure（MPa）.
3. Rated flow coefficient of pneumatic diaphragm regulating valve（Kv）.
4. The inherent flow characteristics of pneumatic diaphragm regulating valves.
5. Name of medium for pneumatic diaphragm regulating valve.
6. Working temperature and range of pneumatic diaphragm regulating valve.
7. The working mode of the pneumatic diaphragm regulating valve as a whole.
8. Pneumatic diaphragm regulating valve body, valve internals, and packing materials.
9. What are the accessories for pneumatic diaphragm regulating valves.
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