Our Product — Check Valve - Control check valve
● Standards:
- 1.Design and manufacture:MSS SP-71/BS 5153/EN 12334.
2.Flange dimensions:ASME B16.1/EN 1092.
3.Test and inspection:API 598.
4.Size up to 24".
● Materials
| 1 | Body | Cast Iron |
| 2 | Disc | Bronze |
| 3 | O-ring Standard | NBR |
| 4 | Sleeve | Cast Iron |
| 5 | Stem | Stainless Steel |
| 6 | Spring | Stainless Steel |
| 7 | Packing | Graphite |
| 8 | Bonnet | Cast Iron |
| 9 | Gland | Cast Iron |
| 10 | Hexangular Screw Bolt | Carbon steel |
| 11 | Washer | Brass |
| 12 | Handwheel | Cast Iron |
| Size | L | Φ | H1 | H2 | D | K | n-d | b |
| 2" | 8 3/8 | 6 1/4 | 8 5/8 | 9 1/4 | 6 | 4 3/4 | 4-3/4 | 5/8 |
| 2 1/2" | 9 7/8 | 6 1/4 | 9 1/8 | 9 5/8 | 7 | 5 1/2 | 4-3/4 | 11/16 |
| 3" | 10 | 9 3/8 | 9 1/4 | 10 3/8 | 7 1/2 | 6 | 4-3/4 | 3/4 |
| 4" | 14 1/2 | 9 3/8 | 11 7/8 | 13 3/8 | 9 | 7 1/2 | 8-3/4 | 15/16 |
| 5" | 16 | 11 | 14 1/8 | 15 1/8 | 10 | 8 1/2 | 8-7/8 | 61/64 |
| 6" | 18 | 11 | 15 5/8 | 17 | 11 | 9 1/2 | 8-7/8 | 1 |
| 8" | 21 1/2 | 12 1/2 | 19 1/8 | 21 | 13 1/2 | 11 3/4 | 8-7/8 | 1 1/8 |
| 10" | 25 1/2 | 12 1/2 | 22 | 23 5/8 | 16 | 14 1/4 | 12-63/64 | 1 3/16 |
| 12" | 30 | 12 1/2 | 24 3/8 | 26 5/8 | 19 | 17 | 12-63/64 | 1 1/4 |
| 14" | 30 3/8 | 12 1/2 | 25 3/8 | 29 5/8 | 21 | 18 3/4 | 12-11/8 | 1 3/8 |
| PRESSURE | SIZE | DIMENSIIONS(mm) | Kg | |||||
| NPS | DN | L | D | D2 | D3 | D4 | ||
| Class150 PN2.0MPa |
1/2 | 15 | 25 | 46 | 15 | 25 | 25 | 0.28 |
| 3/4 | 20 | 315 | 56 | 19 | 30 | 30 | 0.42 | |
| 1 | 25 | 35.5 | 65 | 24 | 36 | 36 | 0.56 | |
| 1-1/4 | 32 | 40 | 74 | 31 | 43 | 43 | 0.75 | |
| 1-1/2 | 40 | 45 | 84 | 39 | 52 | 52 | 1.3 | |
| 2 | 50 | 56 | 103 | 48 | 62 | 62 | 2.1 | |
| 1-1/2 | 65 | 63 | 122 | 62 | 75 | 75 | 2.8 | |
| 3 | 80 | 71 | 135 | 76 | 90 | 90 | 3.6 | |
| 4 | 100 | 80 | 173 | 95 | 112 | 112 | 4.8 | |
| 5 | 125 | 110 | 195 | 110 | 125 | 132 | 12 | |
| 6 | 150 | 125 | 220 | 127 | 150 | 158 | 17 | |
| 8 | 200 | 160 | 277 | 165 | 200 | 208 | 29 | |
