Application
Hot oil system, steam system, hot and cold water system etc.
Advantage
1.Bellow seal element. The key part of bellow sealed globe valves is mental bellow. It is the connection between cover and stem with automatic roll welding. The mental bellow can keep the stem part no leakage.
2.Benefit from the con and streamline shape design, the disc has a reliable seal and longer service life.
3.Double seal design(bellows+packing). Bellow and packing can protect against leakage and provide a excellent seal.
4.Grease nipple. It can direct lubricate the stem, nut and sleeve.
5.Ergonomic hand wheel. It provide longer service life and easier operation.
Technical specification
Design standard: DIN 3356
Face to face dimension: DIN 3202
Flanged ends: DIN 2543-2545
Test & inspection: DIN 3230
Main part materials
| NO. | Part name | Material |
| 1 | Body | GS-C25,GGG-40,1.4401 |
| 2 | Seat | 1.4301,Stellite |
| 3 | Disc | 1.4021,1.4301+Stellite |
| 4 | Pin | 1.4301,1.4401 |
| 5 | Bellow assemble | 1.4021,1.4401 |
| 6 | Stem | 1.4021,1.4301,1.4401 |
| 7 | Gasket | Flexible graphite + stainless steel |
| 8 | Cover | GS-C25,1.4301,1.4401 |
| 9 | Back seal | 1.4021,1.4301 |
| 10 | Headed bolt | ASTM 193-B7,A193-B8 |
| 11 | Packing | Flexible graphite |
| 12 | Adjustment gland | 1C25,1.4301,1.4401 |
| 13 | Adjustment screw | 34CrMo4,1.4301,1.4401 |
| 14 | Stem nut | Cooper alloy,D2,BL2 |
| 15 | Friction plate | 1C45,1.4301,1.4401 |
| 16 | Spring collar | 1.4301 |
| 17 | Hand wheel | Carbon steel |
| 18 | Cap | 1C45 |
Performance specification
| Nominal Pressure | PN | |
| Test Pressure | Strength test | 1.5PN | MPa |
| Sealing test | 1.1PN |
| Gas seal test | 0.6 |
| -- | -- |
| Suitable temp | -196ºC~600ºC |
Main connection size
| PN 16 |
| DN | Main connection size |
| L | D | D1 | D2 | b | f | H | n-Φd |
| 15 | 130 | 95 | 65 | 45 | 16 | 2 | 170 | 4-Φ14 |
| 20 | 150 | 105 | 75 | 58 | 18 | 2 | 175 | 4-Φ14 |
| 25 | 160 | 115 | 85 | 68 | 18 | 2 | 175 | 4-Φ14 |
| 32 | 180 | 140 | 100 | 78 | 18 | 2 | 180 | 4-Φ18 |
| 40 | 200 | 150 | 110 | 88 | 18 | 3 | 200 | 4-Φ18 |
| 50 | 230 | 165 | 125 | 102 | 20 | 3 | 220 | 4-Φ18 |
| 65 | 290 | 185 | 145 | 122 | 20 | 3 | 240 | 4-Φ18 |
| 80 | 310 | 200 | 160 | 138 | 20 | 3 | 260 | 8-Φ18 |
| 100 | 350 | 220 | 180 | 158 | 20 | 3 | 305 | 8-Φ18 |
| 125 | 400 | 250 | 210 | 188 | 22 | 3 | 320 | 8-Φ18 |
| 150 | 480 | 285 | 240 | 212 | 22 | 3 | 345 | 8-Φ22 |
| 200 | 600 | 340 | 295 | 268 | 24 | 3 | 450 | 12-Φ22 |
| PN 25 |
| 15 | 130 | 95 | 65 | 45 | 16 | 2 | 170 | 4-Φ14 |
| 20 | 150 | 105 | 75 | 58 | 18 | 2 | 175 | 4-Φ14 |
| 25 | 160 | 115 | 85 | 68 | 18 | 2 | 175 | 4-Φ14 |
| 32 | 180 | 140 | 100 | 78 | 18 | 2 | 180 | 4-Φ18 |
| 40 | 200 | 150 | 110 | 88 | 18 | 3 | 200 | 4-Φ18 |
| 50 | 230 | 165 | 125 | 102 | 20 | 3 | 220 | 4-Φ18 |
| 65 | 290 | 185 | 145 | 122 | 22 | 3 | 240 | 8-Φ18 |
| 80 | 310 | 200 | 160 | 138 | 24 | 3 | 260 | 8-Φ18 |
| 100 | 350 | 235 | 190 | 162 | 24 | 3 | 305 | 8-Φ22 |
| 125 | 400 | 270 | 220 | 188 | 26 | 3 | 320 | 8-Φ26 |
| 150 | 480 | 300 | 250 | 218 | 28 | 3 | 345 | 8-Φ26 |
| 200 | 600 | 360 | 310 | 278 | 30 | 3 | 450 | 12-Φ26 |
| PN 40 |
| 15 | 130 | 95 | 65 | 45 | 16 | 2 | 170 | 4-Φ14 |
| 20 | 150 | 105 | 75 | 58 | 18 | 2 | 175 | 4-Φ14 |
| 25 | 160 | 115 | 85 | 68 | 18 | 2 | 175 | 4-Φ14 |
| 32 | 160 | 140 | 100 | 68 | 18 | 2 | 180 | 4-Φ18 |
| 40 | 180 | 150 | 110 | 78 | 18 | 3 | 200 | 4-Φ18 |
| 50 | 230 | 165 | 125 | 102 | 20 | 3 | 220 | 4-Φ18 |
| 65 | 290 | 185 | 145 | 122 | 22 | 3 | 240 | 8-Φ18 |
| 80 | 310 | 200 | 160 | 138 | 24 | 3 | 260 | 8-Φ18 |
| 100 | 350 | 235 | 190 | 162 | 24 | 3 | 305 | 8-Φ22 |
| 125 | 400 | 270 | 220 | 188 | 26 | 3 | 320 | 8-Φ26 |
| 150 | 480 | 300 | 250 | 218 | 28 | 3 | 345 | 8-Φ26 |
| 200 | 600 | 375 | 320 | 285 | 34 | 3 | 450 | 12-Φ30 |
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.
