Line NBR Seal Ring Cast Rion Material 125mm Size Flanged Butterfly Valve
Pruduct
The valve is widely used in water supply and drainage, building fire fighting system and other pipelines, especially fire fighting pipelines. The valve can be used in non corrosive medium pipeline or equipment, for closure, connecting and regulating flow.
Standard of adoption:
.Design and manufacture: GB/T 12238 universal valve flange and clamp connection elastic seal butterfly valve
· Structure length: GB/T 12221 metal valve structure length or manufacturer's standard
· Connecting end: JB/T 17241.6 integral cast iron flange
· Inspection and test: GB/T 13927 industrial valve pressure test
Connection size
| DN | L | D | D1 | b-f | z-Фd |
| 10 | 16 | 10 | 16 | 10 | 16 |
| 50 | 108 | 160 | 125 | 19-3 | 4-Ф18 |
| 65 | 112 | 180 | 145 | 19-3 | 4-Ф18 |
| 80 | 114 | 195 | 160 | 19-3 | 8-Ф18 |
| 100 | 127 | 215 | 180 | 19-3 | 8-Ф18 |
| 125 | 140 | 245 | 210 | 19-3 | 8-Ф18 |
| 150 | 140 | 280 | 240 | 19-3 | 8-Ф23 |
| 200 | 152 | 335 | 295 | 20-3 | 8-Ф23 | 12-Ф23 |
| 250 | 165 | 390 | 405 | 350 | 355 | 22-3 | 12-Ф23 | 12-Ф28 |
| 300 | 178 | 440 | 460 | 400 | 410 | 24.5-4 | 12-Ф23 | 12-Ф28 |
| 350 | 190 | 505 | 520 | 460 | 470 | 30-4 | 16-Ф23 | 16-Ф28 |
| 400 | 216 | 565 | 580 | 515 | 525 | 32-4 | 16-Ф28 | 16-Ф31 |
| 450 | 222 | 615 | 640 | 565 | 585 | 32-4 | 20-Ф28 | 20-Ф31 |
| 500 | 229 | 670 | 715 | 620 | 650 | 34-4 | 20-Ф28 | 20-Ф34 |
| 600 | 267 | 780 | 840 | 725 | 770 | 36-5 | 20-Ф31 | 20-Ф37 |
| 700 | 292 | 895 | | 840 | | 40-5 | 24-Ф31 | |
| 800 | 318 | 1015 | 950 | 44-5 | 24-Ф34 |
Main part name and material
| Main part | Part material |
| Body | Grey iron+NRB,Ductile iron+NRB/EPDM |
| Disc | QT450-10 |
| Stem | 45/2Cr13 |
| O-Ring | NBR/EPDM |
Characteristics of valve
1. Structure and size conform to GB/T12221, small size, light weight, easy to operate.
2.90 degrees operation quickly open; The plate has high strength, large flow area, small flow resistance and energy saving.
3. The medium can flow from both sides of the flange disc valve in any direction, can achieve the purpose of connecting or cutting off.
4. Small operating torque, labor-saving and lightweight.
5. The number of opening and closing experiments is up to ten thousand times, and the service life is long.
6. Complete seal, zero gas test leakage.
Precautions
1. The turbine head shall not be used for lifting, and auxiliary levers shall not be added during operation.
2. The valve shall not be subjected to large external forces after installation.
3. When the local minimum temperature is lower than 4 ° C, take insulation protection. As the end valve should be used with pipe or jacket heating, to prevent the pipe wall temperature below 0℃.
4. It is strictly prohibited to install and use in the pipeline under vibration or the rapid change of medium temperature.
5. The operating condition shall be consistent with the requirements in the performance specification.
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Line Nbr Seal Ring Flanged Butterfly Valve Cast Iron Material 125mm Size Images
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