NST-DP27/1 Pilot operated diapraghm pressure reducing valves are ideal to use particularly in steam, compressed air, or other nonflammable industrial gases. They are ideal products to decrease the pressure of high pressure liquids for usage. The spring can be changeable with zero cost for the different pressure requirements.
| MATERIALS OF MAIN PARTS | ||
| No | PARTS | MATERIAL |
| 1 | BODY | WCB |
| 2 | COVER | WCB |
| 3 | SEAT | 2Cr13 |
| 4 | VALVE CLACK | 2Cr13 |
| 5 | POLE | 2Cr13 |
| 6 | DIAPHRAGM | 1Cr18Ni9Ti |
| 7 | ADJUSTING SPRING | 60Si2Mn |
| ADJUSTING SPRING | |
| Resistance pressure (Bar) | 25 |
| Shell test pressure (Bar) | 37,5 |
| Seal test pressure (Bar) | 25 |
| Max. inlet pressure (Bar) | 16 |
| Outlet pressure range (Bar) |
0,5~3 (yellow spring),2,5~7 (blue spring), |
| Pressure characteristics deviation (MPa) | GB12244 |
| Flow characterictics deviation (Mpa) | GB1224 l4 |
| Leakage (ml/min) | GB12245 |
| Medium temperature (ºC) | -10~285 |
| FLOW RATE (Cv) | ||||||||||||
| SIZE (mm) | DN15 | DN20 | DN25 | DN32 | DN40 | DN50 | DN65 | DN80 | DN100 | DN125 | DN150 | DN200 |
| Cv | 2,90 | 5,30 | 8,60 | 11,60 | 16,50 | 29,10 | 45,50 | 60,10 | 93,30 | 146 | 186 | 300 |
| Kv | 2,80 | 5,50 | 8,10 | 12 | 17 | 28 | 45,50 | 60,10 | 93,30 | 146 | 180 | 300 |
| DIMENSIONS | ||||
| SIZE | L | H1 | H2 | L1 |
| DN15 | 147 | 221 | 133 | 185 |
| DN20 | 154 | 224 | 136 | 185 |
| DN25 | 160 | 235 | 145 | 207 |
| DN32 | 180 | 236 | 156 | 207 |
| DN40 | 200 | 238 | 176 | 255 |
| DN50 | 230 | 246 | 183 | 255 |
| DN65 | 250 | 295 | 200 | 320 |
| DN80 | 310 | 323 | 230 | 350 |
| DN100 | 350 | 340 | 263 | 380 |
| DN125 | 400 | 359 | 306 | 455 |
| DN150 | 450 | 375 | 330 | 500 |
| DN200 | 500 | 430 | 410 | 600 |
| CONNECTION | FLANGED DIN2545 | |||||||||||
| SIZES | DN15 | DN20 | DN25 | DN32 | DN40 | DN50 | DN65 | DN80 | DN100 | DN125 | DN150 | DN200 |
| WEIGHTS (KG) | 15 | 16 | 19 | 22 | 30 | 35 | 51 | 63 | 90 | |||
| OPERATING CONDITIONS | |
| MAX. ALLOWABLE TEMPERATURE TMA (ºC) | 285 |
| MAX. OPERATING PRESSURE PMO ( bar ) | 16 |
NST-DP27/1