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Mode of operation E: with adjustment screw
For lubricating and hydraulic oils and many other self-lubricating, non-corrosive fluids. Fuel oil EL, L, M, S und ES, kerosine.
Maximum temperature of delivery fluid: 150° C Material: casing of hydraulic cast iron GGG 40. Piston, valve tip, spring of hardened steel.
Action: directly controlled, spring-loaded overflow valve to maintain a set operating pressure or a set maximum pressure.
| Type | Pressure stage for type (Article-no.) |
Flange DIN 2635 PN 40 |
Flow rate 2) l/h |
Viscosity stage 2) cSt |
Article-no. |
| FDR 15 – E | 0 = 0,5 – 1,5 bar 1 = 1 – 4 bar 2 = 2 – 9 bar 3 = 6 – 25 bar 4 = 15 – 40 bar |
DN 151) | 30 – 600 | 2,8 to 480 | 0270001 |
| FDR 20 – E | DN 201) | 100 – 2000 | 2,8 to 480 | 0270002 | |
| FDR 25 – E | DN 251) | 300 - 6000 | 2,8 to 480 | 0270003 | |
| FDR 32 – E | DN 321) | 500 – 10000 | 2,8 to 480 | 0270004 | |
| FDR 50 – E 3) | DN 50 | 8000 – 20000 | 2,8 to 480 | 0270006 |
1) Counter flange with seal + screws must be ordered separately
2) Performance curve on page 29-31
3) Only with:
pressure stage 1: 1-4 bar
pressure stage 2: 2-9 bar
pressure stage 4: 6-40 bar
| Type | a | b | DIN-Flange DIN 2635 |
Ø D | Ø k | Ø d2 | |
|---|---|---|---|---|---|---|---|
| FDR 15 | 55 | 92 | DN 15 | 95 | 65 | 14 | Suitable counter flanges for PN 10 – 40 as DIN 2632-35 |
| FDR 20 | 63 | 118 | DN 20 | 105 | 75 | 14 | |
| FDR 25 | 80 | 134 | DN 25 | 115 | 85 | 14 | |
| FDR 32 | 80 | 138 | DN 32 | 140 | 100 | 18 | |
| FDR 50 | 140 | 205 | DN 50 | 165 | 125 | 18 |
For assembly, start-up and maintenance, please adhere to the instruction manual that comes with each device!
