Main parts materials
| Part Name | Gray cast iron | Carbon steel | Stainless steel |
| Z | C | P | |
| Valve body, valve cover | HT250 | WCB | CF8 |
| ball | WCB | WCB | CF8 |
| Lining layer/valve seat | PTFE(F4)PCTFE(F₃)FEP(F46)PO | ||
| Filling cap | HT250 | WCB | CF8 |
| filler | PTFE(F4) polytetrafluoroethylene | ||
| handle | WCC | WCC | WCC |
Implementation standards
| Supply | JB/T 7928 |
| Logo | GB/T12220 |
| Pressure test | GB/T13927 |
| Flange size | HG/T 20592 |
| Structural length | HG/T 3704 |
| Design and manufacturing | GB/T12237 |
1.0/1.6MPa Main connection size (unit: mm)
| Nominal path | Standard value | Reference value | ||||||||
| DN(mm) | NPS(inch) | D1 | D² | b | Z-φd | Do | H | |||
| PN1.0MPa | ||||||||||
| 15 | 1/2 | 140 | 95 | 65 | 45 | 2 | 14 | 4-φ14 | 120 | 80 |
| 20 | 3/4 | 140 | 105 | 75 | 55 | 2 | 16 | 4-φ14 | 140 | 90 |
| 25 | 1 | 150 | 115 | 85 | 65 | 16 | 4-φ14 | 160 | 100 | |
| 32 | 11/4 | 165 | 135 | 100 | 78 | 2 | 18 | 4-φ18 | 160 | 110 |
| 40 | 11/2 | 180 | 145 | 110 | 85 | 3 | 18 | 4-φ18 | 200 | 120 |
| 50 | 2 | 200 | 160 | 125 | 100 | 20 | 4-φ18 | 250 | 135 | |
| 65 | 21/2 | 220 | 180 | 145 | 120 | 3 | 20 | 4-φ18 | 300 | 145 |
| 80 | 3 | 250 | 195 | 160 | 135 | twenty two | 4/8-φ18 | 350 | 185 | |
| 100 | 4 | 280 | 215 | 180 | 155 | twenty two | 8-φ18 | 240 | 195 | |
| 125 | 5 | 320 | 245 | 210 | 185 | 3 | twenty four | 8-φ18 | 500 | 210 |
| 150 | 6 | 360 | 280 | 240 | 210 | twenty four | 8-φ23 | 200* | 450 | |
| 200 | 8 | 400 | 335 | 295 | 265 | 3 | 26 | 8-φ23 | 240* | 490 |
| 250 | 10 | 531 | 390 | 350 | 320 | 28 | 12-φ23 | 240* | 550 | |
| 300 | 12 | 610 | 440 | 400 | 368 | 4 | 28 | 12-φ23 | 320* | 600 |
| PN1.6MPa | ||||||||||
| 15 | 1/2 | 140 | 95 | 65 | 45 | 2 | 14 | 4-φ14 | 120 | 80 |
| 20 | 3/4 | 140 | 105 | 75 | 55 | 16 | 4-φ14 | 40 | 90 | |
| 25 | 1 | 150 | 115 | 85 | 65 | 2 | 16 | 4-φ14 | 160 | 100 |
| 32 | 11/4 | 165 | 135 | 100 | 78 | 18 | 4-φ18 | 160 | 110 | |
| 40 | 11/2 | 180 | 145 | 110 | 85 | 3 | 18 | 4-φ18 | 200 | 120 |
| 50 | 2 | 200 | 160 | 125 | 100 | 20 | 4-φ18 | 250 | 135 | |
| 65 | 21/2 | 220 | 180 | 145 | 120 | 20 | 4-φ18 | 300 | 145 | |
| 80 | 3 | 250 | 195 | 160 | 135 | 3 | twenty two | 8-φ18 | 350 | 185 |
| 100 | 4 | 280 | 215 | 180 | 155 | 3 | twenty four | 8-d18 | 240 | 195 |
| 125 | 5 | 320 | 245 | 210 | 185 | 26 | 8-φ18 | 500 | 210 | |
| 150 | 6 | 360 | 280 | 240 | 210 | 3 | 28 | 8-φ23 | 200* | 450 |
| 200 | 8 | 400 | 335 | 295 | 265 | 30 | 12-φ23 | 240* | 490 | |
| 250 | 10 | 533 | 405 | 355 | 320 | 32 | 12-φ25 | 240* | 550 | |
| 300 | 12 | 610 | 460 | 410 | 375 | 4 | 34 | 12-φ25 | 280* | 600 |
Note: Product information is for reference only. If you have any questions, please contact our company!
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Liangming Group aims to contribute to the high-quality development of the society and economy, help achieve common prosperity, and strive to become a widely respected enterprise with good quality and reputation as its core value.
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