一．Product Introduction
ZMAP type single-seat pneumatic membrane regulating valve, ZMAN type two-seat pneumatic membrane regulating valve: it consists of two parts: pneumatic membrane actuator and regulating valve. It is used in conjunction with pneumatic regulators, pressure reducing valves and other instruments to control the temperature, pressure, liquid level, flow and other process parameters in the pipeline.The single-seat regulating valve has the advantages of easy sealing and small leakage, but the equilibrium force is large, so the working pressure difference should not be too high.The two-seat regulating valve has the characteristics of large flow coefficient and small unbalanced force, so it is widely used.
二.Product Features
1.Simple structure
2.Action reliability,
3.Convenient maintenance,
4.No need fire and explosion-proof protection
5.Widely used.
6.Pneumatic double seat control valve(ZMAN type), there are two valves in the valve seat, with large circulation capacity, small unbalanced force, mode of action,easy to replace and other advantages.
7.Pneumatic double seat control valve can be divided into two types: air-closed and air-opened according to their mode of action.
三.Technical data
| DN/mm | PN | Ambient temperature/℃ | Inherent flow characteristics | Maximum air source pressure/MPa |
| 25~300 | 16, 40, 63 | -30~60 | Straight line, equal percentage | 0.25 |
Â
| DN/mm | Circulation capacity C | Itinerary/mm | Equipped with execution Device model |
Gray cast iron valve | Cast steel and cast stainless steel valves | |||||
| Single seat | Two-seater | PN | Working pressure /MPa |
Medium temperature /℃ |
PN | Working pressure /MPa |
Medium temperature /℃ |
|||
| 25 | 8 | 10 | 16 | ZMA-2 | 16 | 16 | ≤200 | 40 63 |
40 63 |
≤250 （Ordinary upper valve cover） ≤450 （Upper valve cover with heat sink） |
| 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 | |||||||||
| PN | Valve body, upper valve cover, lower valve cover | Valve core, valve stem, valve seat | Gasket | Packing |
| 16 | HT200 | 1Cr18Ni9 | Asbestos rubber sheet | PTFE |
| 40 | ZG25 | 1Cr18Ni9 | Asbestos rubber sheet | PTFE |
| 63 | 1Cr18Ni9 | 1Cr18Ni9 | 石Asbestos rubber sheet | PTFE |
å››.The main shape and connection size
| DN | D | D1 | D2 | f | b | z×Φd | t | L |
| 25 | 115 | 85 | 65 | 2 | 16 | 4×Φ14 | 4 | 185 |
| 32 | 135 | 100 | 78 | 2 | 18 | 4×Φ18 | 5 | 200 |
| 40 | 145 | 110 | 85 | 3 | 18 | 4×Φ18 | 5 | 220 |
| 50 | 160 | 125 | 100 | 3 | 20 | 4×Φ18 | 5 | 250 |
| 65 | 180 | 145 | 120 | 3 | 20 | 4×Φ18 | 5 | 275 |
| 80 | 195 | 160 | 135 | 3 | 22 | 8×Φ18 | 5 | 305 |
| 100 | 215 | 180 | 155 | 3 | 24 | 8×Φ18 | 5 | 350 |
| 125 | 245 | 210 | 185 | 3 | 26 | 8×Φ18 | 5 | 410 |
| 150 | 280 | 240 | 210 | 3 | 28 | 8×Φ23 | 5 | 450 |
| 200 | 335 | 295 | 265 | 3 | 30 | 12×Φ23 | 5 | 550 |
| 250 | 405 | 355 | 320 | 3 | 32 | 12×Φ25 | 5 | 640 |
| 300 | 460 | 410 | 375 | 4 | 34 | 12×Φ25 | 5 | 720 |
| DN | L | D | D1 | D2 | f | D3 | f1 | b | z×Φd | H2 | H1 | H1ˊ |
| 25 | 190 | 115 | 85 | 65 | 2 | 58 | 4 | 16 | 4×Φ14 | 117 | 570 | 676 |
| 32 | 210 | 135 | 100 | 78 | 2 | 66 | 4 | 18 | 4×Φ18 | 120 | 573 | 679 |
| 40 | 230 | 145 | 110 | 85 | 3 | 76 | 4 | 18 | 4×Φ18 | 139 | 645 | 751 |
| 50 | 255 | 160 | 125 | 100 | 3 | 88 | 4 | 20 | 4×Φ18 | 144 | 650 | 756 |
| 65 | 285 | 180 | 145 | 120 | 3 | 110 | 4 | 22 | 8×Φ18 | 188 | 821 | 976 |
| 80 | 310 | 195 | 160 | 135 | 3 | 121 | 4 | 22 | 8×Φ18 | 208 | 831 | 986 |
| 100 | 355 | 230 | 190 | 160 | 3 | 150 | 4.5 | 24 | 8×Φ23 | 220 | 843 | 998 |
| 125 | 425 | 270 | 220 | 188 | 3 | 176 | 4.5 | 28 | 8×Φ25 | 268 | 1045 | 1228 |
| 150 | 460 | 300 | 250 | 218 | 3 | 204 | 4.5 | 30 | 8×Φ25 | 278 | 1055 | 1238 |
| 200 | 560 | 375 | 320 | 282 | 3 | 260 | 4.5 | 38 | 12×Φ30 | 320 | 1097 | 1280 |
| 250 | 655 | 445 | 385 | 345 | 3 | 313 | 4.5 | 42 | 12×Φ34 | 435 | 1526 | 1703 |
| 300 | 735 | 510 | 450 | 408 | 4 | 364 | 4.5 | 46 | 16×Φ34 | 465 | 1544 | 1721 |
