This reducing valve is latest type pilot pressure reducing valve with membrane. It is the modified form of normal pressure reducing valve. The membrane of new material enlarging the working area, so the higher pressure can be fed back to the membrane, and adjust the main valve to maintain the constant pressure of lower pressure stream.
Advantage
1. Especially suitable for steam and water.
2. Max inlet pressure: 16 bar, 25 bar.
3. Outlet pressure (Springs pressure setting rang) Yellow: 0.2 to 3 bar; Blue: 2.5 to 7 bar; Red: 6 to 12 bar.
4. Diameter: 15-200 mm.
5. Medium temperature: 0-285 ºC.
6. Max rate inlet pressure/ outlet pressure: 20:1.
7. DIN, ANSI, GB.
Main part materials
| Name of component | Material |
| Valve body, valve cover | WCB |
| Valve seat | 2Cr13 |
| Valve flap | 2Cr13 |
| Valve rod | 2Cr13 |
| Membrane | Brass |
| Adjusting spring | 60Si2Mn |
| Pressure sensing pipe | Brass |
Main connection size
| PN 16 |
| DN | Main connection size |
| L | H1 | H | L1 | D | D1 | D2 | b | f | n-Φd |
| 15 | 147 | 235 | 145 | 185 | 95 | 65 | 45 | 16 | 2 | 4-Φ14 |
| 20 | 154 | 235 | 145 | 185 | 105 | 75 | 58 | 18 | 2 | 4-Φ14 |
| 25 | 160 | 235 | 145 | 207 | 115 | 85 | 68 | 18 | 2 | 4-Φ14 |
| 32 | 180 | 235 | 145 | 207 | 140 | 100 | 78 | 18 | 2 | 4-Φ18 |
| 40 | 200 | 240 | 180 | 255 | 150 | 110 | 88 | 18 | 3 | 4-Φ18 |
| 50 | 230 | 240 | 183 | 255 | 165 | 125 | 102 | 20 | 3 | 4-Φ18 |
| 65 | 250 | 295 | 200 | 320 | 185 | 145 | 122 | 20 | 3 | 4-Φ18 |
| 80 | 310 | 232 | 230 | 350 | 200 | 160 | 138 | 20 | 3 | 8-Φ18 |
| 100 | 350 | 320 | 240 | 380 | 220 | 180 | 158 | 20 | 3 | 8-Φ18 |
| 125 | 400 | 352 | 315 | 430 | 250 | 210 | 188 | 22 | 3 | 8-Φ18 |
| 150 | 450 | 364 | 334 | 455 | 285 | 240 | 212 | 22 | 3 | 8-Φ22 |
| 200 | 500 | 384 | 354 | 510 | 340 | 295 | 268 | 24 | 3 | 12-Φ22 |
| PN 25 |
| DN | Main connection size |
| L | H1 | H | L1 | D | D1 | D2 | b | f | n-Φd |
| 15 | 147 | 235 | 145 | 185 | 95 | 65 | 45 | 16 | 2 | 4-Φ14 |
| 20 | 154 | 235 | 145 | 185 | 105 | 75 | 58 | 18 | 2 | 4-Φ14 |
| 25 | 160 | 235 | 145 | 207 | 115 | 85 | 68 | 18 | 2 | 4-Φ14 |
| 32 | 180 | 235 | 145 | 207 | 140 | 100 | 78 | 18 | 2 | 4-Φ18 |
| 40 | 200 | 240 | 180 | 255 | 150 | 110 | 88 | 18 | 3 | 4-Φ18 |
| 50 | 230 | 240 | 183 | 255 | 165 | 125 | 102 | 20 | 3 | 4-Φ18 |
| 65 | 250 | 295 | 200 | 320 | 185 | 145 | 122 | 22 | 3 | 8-Φ18 |
| 80 | 310 | 232 | 230 | 350 | 200 | 160 | 138 | 24 | 3 | 8-Φ18 |
| 100 | 350 | 320 | 240 | 380 | 235 | 190 | 162 | 24 | 3 | 8-Φ22 |
| 125 | 400 | 352 | 315 | 430 | 270 | 220 | 188 | 26 | 3 | 8-Φ26 |
| 150 | 450 | 364 | 334 | 455 | 300 | 250 | 218 | 28 | 3 | 8-Φ26 |
| 200 | 500 | 384 | 354 | 510 | 360 | 310 | 278 | 30 | 3 | 12-Φ26 |
Zhejiang Newton Fluid Control Co., Ltd. (NFC)
Introduction
The NFC is a professional bellow sealed valves company located in Oubei Wenzhou which is named the land of pumps and valves. It is founded in 2000, when its name is Yongjia Huamei Valve, and devoted to valve research and development, manufacture, marketing and service. Through the past decade, with unremitting efforts and innovation, the NFC has become one of the leading companies in the valve industry. It has over 200 staff members, of which there are more than 20 employees with senior professional titles and more than 140 employees with professional valve manufacturing skills.
