Pressure Relief Valve Double Chamber
Description
Pressure Relief Valve(Double Chamber)
Pressure Relief Valve(Double Chamber)Zeco Pressure Relief Valve(Double Chamber) is used for fire test circulation systems and other water supply systems in high-rise buildings.
Application
Product Scope: NPS 2” ~ NPS22” , 10bar ~ 25bar
Features:
Accurate Pressure Control
Fast Opening to Maintain Line Pressure
Slow Closing to Prevents Surges
Minimal External Accessories
Face to Face Dimensions:AMSE B16.10
Flange End Dimension :AMSE B16.10
Coating: Fusion Bonded Epoxy Coating
Inspection and Test：API 598 / ISO 5208 / EN 12226-2
| Part | Material | EN Spec. |
| Body | Ductile Iron | EN-JS1050 |
| Bonnet | Ductile Iron | EN-JS1050 |
| Trim | Stainless Steel 420
Stainless Steel 431 |
BS970 420S37
BS970 431S29 |
| Seat | Stainless Steel 420
Stainless Steel 431 |
BS970 420S37
BS970 431S29 |
| Diaphragm | EPDM / NBR | Commercial |
| For materials options not listed,consult factory.
Zeco manufactures valves in more than 50 different alloys. |
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| NPS | In | 2 | 2 1/2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 |
| L | mm | 210 | 230 | 260 | 292 | 320 | 380 | 500 | 605 | 725 | 733 | 914 | 978 | 1075 | 1219 |
| H1 | mm | 160 | 190 | 226 | 260 | 318 | 345 | 410 | 531 | 640 | 700 | 720 | 781 | 830 | 916 |
| H | mm | 90 | 100 | 110 | 120 | 130 | 150 | 180 | 215 | 235 | 265 | 300 | 330 | 370 | 430 |
| A1 | mm | 135 | 140 | 161 | 170 | 178 | 209 | 230 | 248 | 293 | 335 | 335 | 370 | 416 | 470 |
| A | mm | 226 | 243 | 263 | 290 | 320 | 356 | 410 | 466 | 510 | 571 | 633 | 690 | 776 | 908 |
