| | Overview | ![]() | ZAZP new series pneumatic control valve adopts top guiding structure with multi-spring actuator
Structure. Compact structure, light weight, sensitive action, S-stream type filling channel, low pressure drop loss, valve capacity
Large quantity, accurate flow characteristics, convenient assembly and disassembly. Widely used for precise control of gases, liquids, etc.
Quality, pneumatic control valve process parameters such as pressure, flow, temperature, liquid level are maintained at a given value. Particularly suitable for allowing leaks
A small amount of small valve before and after the pressure difference is not large.
This series of products are standard, adjustable cut-off type, bellows seal type, jacket insulation type and many other products.
Kind. The nominal pressure rating of the product is PN10, 16, 40, 64; the valve body diameter range is DN20~200. Applicable flow
The body temperature ranges from -200 ° C to 560 ° C in various grades. The leakage standard is Class IV or Class VI. Flow characteristics are lines
Sex or equal percentage. A wide variety of specifications are available. |
Main parts materials :
Valve body, valve cover: HT200, ZG230-450, ZG1Cr18 Ni9Ti
Valve core, valve seat: 1Cr18 Ni9Ti, Stellite alloy surfacing
Soft seal spool: reinforced polytetrafluoroethylene
Filler: polytetrafluoroethylene, flexible graphite
Bellows: 1Cr18 Ni9Ti
Gasket: rubber asbestos board, 10, 1Cr18 Ni9Ti, asbestos spiral gasket
Membrane cover: A3
Corrugated diaphragm: NBR rubber reinforced polyester fabric
Spring: 60SIMN
Valve stem, push rod: 2Cr13, 1Cr18 Ni9Ti
Bushing: 2Cr13 | | The main technical parameters | | Nominal diameter DN (mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | | (10) | (12) | (15) | (20) | | Rated flow coefficient KV | straight line | 1.8 | 2.8 | 4.4 | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 690 | | Equal percentage | 1.6 | 2.5 | 4.0 | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | | Rated stroke L (mm) | 16 | 25 | 40 | 60 | | Diaphragm effective area Ae (cm2) | 280 | 400 | 600 | 1000 | | Signal range Pr (KPa) | 20~100, 40~200 | | Air source pressure Ps (MPa) | 0.14~0.4 | | Intrinsic flow characteristics | Straight line, equal percentage | | Inherent adjustable ratio | 50 | | Allowable leakage | Hard seat: Class IV (10 -4 valve rated capacity) Soft seat: Class VI | | Nominal pressure PN (MPa) | 1.0, 1.6, 4.0, 6.4 | | Working temperature t (°C) | Normal temperature type | -20~200, -40~240, -60~250 | | Heat sink type | -40~450, -60~450 | | High temperature type | 450~560 | | Low temperature type | -60~-100, -100~-200, -200~-250 |
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