【Installation Notes】
1, the valve must be installed vertically in the highest position of the device.
2, the main safety valve fastened on the support, bearing the main relief valve to withstand the recoil generated when the recoil.
3, the exhaust pipe should have a special hanger, exhaust pipe weight shall not be added to the main safety valve, the main safety valve and the exhaust pipe connecting flange should be to eliminate any additional prestress.
4, the lowest point of the exhaust pipe should be considered hydrophobic, so as not to generate water hammer exhaust.
【Main dimension parameter】
| model | Nominal diameter | Connection size | ||||||||||||||
| L | L1 | L2 | H | D | D1 | D2 | b | zd | DN | D | D1 | D2 | b | zd | ||
| A49H-4 | 150 | 220 | 230 | 240 | 486 | 300 | 250 | 204 | 30 | 8-25 | 200 | 360 | 310 | 278 | 34 | 12-25 |
| A49H-4 | 200 | 270 | 295 | 330 | 615 | 375 | 320 | 260 | 38 | 12-30 | 300 | 485 | 430 | 390 | 40 | 16-30 |
| A49H-4 | 250 | 300 | 350 | 370 | 646 | 445 | 385 | 313 | 42 | 12-34 | 350 | 550 | 490 | 450 | 44 | 16-34 |
