Features of forged steel thread / socket welding globe valve
1. It has compact structure, beautiful appearance and reduced flow channel. Structural features: B.B. or W.B;
2. The sealing surface is made of alloy steel or cemented carbide. The matching of sealing materials is reasonable and the service life is long;
3. The valve disc is conical, and the valve stem is provided with inverted seal, with good sealing performance. The surface of the valve stem is nitrided, which has good corrosion resistance and friction resistance. The packing adopts flexible graphite, with reliable sealing, flexible operation and small opening and closing torque;
4. Various piping standards and connection forms (such as socket welding, butt welding and threaded connection) can be selected.
Executive standard for forged steel thread / socket welding globe valve
| Product specification | design code | Structural length | Connecting flange | Test and inspection | Pressure temperature |
| JB/T7746 | JB/T7746 | JB/T 79¡¢GB/T9113¡¢HG/T20592¡¢EN1092¡¢ASME B16.5 | GB/T26480GB/T13927¡¢API598 | GB/T12224JB/T7746 |
Main performance specifications
| Nominal pressure | Test items | strength test | Sealing test | Air seal test | Applicable temperature¡æ | Applicable medium |
| 1.6 | 2.4 | 1.76 | 0.6 | ¡Ü425 | Water, oilSteam and nitric acid | |
| 2.5 | 3.8 | 2.76 | ||||
| 4.0 | 6.0 | 4.4 | ||||
| 6.4 | 9.6 | 7.04 | ||||
| 10.0 | 15.0 | 11.0 | ||||
| 16.0 | 24.0 | 17.0 | ||||
Material of main parts of forged steel thread / socket welding globe valve
| Part name | Material of parts | |
| Body / bonnet | A105 | 1Cr18Ni9Ti |
| Disc / seat | 20Cr13 | 1Cr18Ni9Ti |
| Stem | 20Cr13 | 1Cr18Ni9Ti |
| seal ring | 1Cr13+HF | 1Cr18Ni9Ti+STL |
| filler | NBR/FPM Flexible graphite | teflon£¨PTFE£© |
| shim | Flexible graphite | |
| Bolt | 35/35CrMo | 1Cr18Ni9Ti |
Drawing of forged steel thread socket welding stop valve
Application specification
1. Design and manufacture: ASME / ANSI B16.34; API 602; JB / t7746
2. Connection end size:
(1) Socket welding end: ASME / ANSI B16.11; JB / t1751
(2) Threaded end: ASME / ANSI b1.20.1 (NPT) GB / t7306 — 87 (RC)
3. Structural features: B.B or W.B; OS & Y
4. Main materials: A105; LF2; F5; F11; F22; f304; F316; f304l; f316l
5. Valve inspection and test: API598; GB / t26480; GB / t13927
Main connecting dimensions of forged steel thread / socket welding globe valve
| DN(mm) | R.P | 8 | 10 | 15 | 20 | 25 | 32 | 40 | 50 | - |
| NPS(in) | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | - | |
| DN(mm) | F.P | - | 8 | 10 | 15 | 20 | 25 | 32 | 40 | 50 |
| NPS(in) | - | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | |
| d | R.P | 7 | 10 | 10 | 13 | 19 | 24 | 29 | 36.5 | - |
| F.P | - | 7 | 10 | 13 | 18 | 24 | 29 | 36.5 | 46.5 | |
| L | R.P | 79 | 79 | 79 | 92 | 111 | 120 | 152 | 172 | - |
| F.P | - | 79 | 79 | 92 | 111 | 120 | 152 | 172 | 200 | |
| H(¿ªÆô) | R.P | 153 | 153 | 158 | 163 | 193 | 250 | 250 | 291 | - |
| F.P | - | 153 | 158 | 163 | 193 | 250 | 250 | 291 | 350 | |
| W | R.P | 100 | 100 | 100 | 100 | 125 | 160 | 160 | 180 | - |
| F.P | - | 100 | 100 | 100 | 125 | 160 | 160 | 180 | 240 | |
| WT(kg) | R.P | 1.9 | 1.8 | 1.7 | 2.1 | 3.3 | 7.5 | 7.5 | 11.4 | - |
| F.P | - | 2.1 | 1.9 | 2.3 | 3.6 | 7.8 | 8.2 | 12.0 | 15.0 |
