功能：直接控制的弹簧加载溢流阀，用于在压力管中保持设定的工作压力或设定的压力
| Modelp |
Possible pressure stages for each model |
Flange
DIN2635 PN 40 |
Flow range 2) l/h |
Viscosity range 2)
cSt |
Item No |
| FDR 15 – E – | 0 = 0,5 – 1,5 bar | DN 15 1) | 30 – 600 | 2,8 bis 480 | 270001 |
| FDR 20 – E – 3) | 1 = 1 – 4 bar | DN 20 1) | 100 – 2000 | 2,8 bis 480 | 270002 |
| FDR 25 – E – | 2 = 2 – 9 bar | DN 25 1) | 300 – 6000 | 2,8 bis 480 | 270003 |
| FDR 32 – E – | 3 = 6 – 25 bar | DN 32 1) | 500 – 10000 | 2,8 bis 480 | 270004 |
| FDR 50 – E -4) | 4 = 15 – 40 bar | DN 50 | 8000 – 20000 | 2,8 bis 480 | 270006 |
1) Counterflange with seal + screws must be ordered separately
2) For curves see page 31
3) Not pressure stage 0, for pressure stage 1: 0.5 – 3.5 bar, all further pressure stages according to table
4) Only with:
Pressure stage 1: 1 – 4 bar
Pressure stage 2: 2 – 9 bar
Pressure stage 4: 6 – 40 bar
| Model |
with hp-Overflow valve |
a | b |
DIN flange DIN 2635 |
Ø D | Ø k | Ø d |
suitable
Counter flange from PN 10 – 40 to DIN EN 1092 |
| FDR 15 | B – G = 1/2“ | 55 | 92 | DN 15 | 95 | 65 | 14 | |
| FDR 20 | B – GH = 3/4“ | 63 | 118 | DN 20 | 105 | 75 | 14 | |
| FDR 25 | B – GHG = 1“ | 80 | 134 | DN 25 | 115 | 85 | 14 | |
| FDR 32 | B – GHG = 1 1/4“ | 80 | 138 | DN 32 | 140 | 100 | 18 | |
| FDR 50 | 140 | 205 | DN 50 | 165 | 125 | 18 |
For installation, operation and maintenance, follow the operating instructions that come with each piece of equipment.
