The valve maintains a constant preset downstream pressure, without being affected from upstream flow and pressure variations. At the same time the valve sustains the upstream pressure at a preset minimum rate. To operate the valve uses two three way plastic pilots.
If the upstream pressure remains below of the sustaining preset pressure, the valve closes completely.
Upstream pressure control and downstream pressure control.
1 ½”, 2”, 2 ½”, 3” and 4” BSP (NPT optional)
| References and dimensions | |||||
| Product code | Valve | L | H | W | Kg. |
| 892915/496300 | 1″1/2 | 188 | 113 | 128 | 1,0 |
| 892920/496300 | 2″ | 188 | 113 | 128 | 1,0 |
| 892930/496300 | 3″ | 261 | 162,5 | 192 | 2,5 |
| 892940/496300 | 4″ | 295 | 205 | 212 | 4,2 |
(Codes of valves with high pressure diaphragm AP, for valves with low pressure diaphragm please consult.)
| Minimum working pressure | ||
| Valve | Low Pressure | High Pressure |
| 1″1/2 | 0,3 | 0,7 |
| 2″ | 0,3 | 0,7 |
| 2″ 1/2 | 0,3 | 0,7 |
| 3″ | 0,5 | 0,9 |
| 4″ | 0,5 | 1,0 |
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