OLO Auto Parts
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The diaphragm and valve core are compressed by an internal spring. When pressure exceeds the preset value, they lift, allowing discharge into the return pipe. Adjust pressure on-site within 0-1.0 MPa. Relief pressure is set 0.1-0.2 MPa above system pressure.
Installed on positive discharge lines to prevent siphoning and ensure dosing accuracy. Adjust backpressure on-site within 0-0.6 MPa. With a pulse damper, it reduces water hammer, maintains constant pressure, and ensures uniform flow.
| Model | Spc | L | H | D | d | z | h |
|---|---|---|---|---|---|---|---|
| 18615 | DN15 | 166 | 165 | 82 | 20 | 18 | 25 |
| 18620 | DN20 | 170 | 165 | 82 | 25 | 21 | 25 |
| 18625 | DN25 | 212 | 173 | 107 | 32 | 26 | 35 |
| 18632 | DN32 | 226 | 173 | 107 | 40 | 28 | 35 |
| 18640 | DN40 | 292 | 225 | 148 | 50 | 37 | 58 |
Back Pressure Adjustment: Never exceed the maximum working pressure of the metering pump. Discharge pressure should be at least 1 bar higher than suction pressure.
Safety Valve Setting: Adjust within rated working range. Set pressure 1-2 bar higher than the back pressure valve to prevent overpressure operation.
