For lubricating and hydraulic oils and many other self-lubricating, non-corrosive fluids.
Maximum temperature of delivery fluid: 250 °C.
Material: Casing of hydraulic cast iron (GG 25 or 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 Rating for type
(Order No.)
Flange 1)
DIN2635 PN40
Flow Rate2) l/h
Viscosity Range2)
cSt
Article-No.
FDR 15 - E -
0 = 0,5 - 1,5 bar
1 = 1 - 4 bar
2 = 2 - 9 bar
3 = 6 - 29 bar
4 = 15 - 40 bar
DN 15
30 - 600
2,8 to 480
270001
FDR 20 - E -3)
DN 20
100 - 2000
2,8 to 480
270002
FDR 25 - E -
DN 25
300 - 6000
2,8 to 480
270003
FDR 32 - E -
DN 32
500 - 10000
2,8 to 480
270004
1) Counter flange with seal + screws must be ordered separately!
2) Performance curve here
3) No pressure stage 0, instead 1: 0.5 - 3.5 bar. Refer to chart for all other pressure stages.
Size Chart
Type
with hp
Overflow Valve
a
b
DIN-Flange
DIN 2635
Ø D
Ø k
Ø d
suitable counter
flanges for
PN10 - 40
as DIN 2632-35
FDR 15
B - G = ½"
55
92
DN 15
95
65
14
FDR 20
B - GH = ¾"
63
118
DN 20
105
75
14
FDR 25
B - GHG = 1"
80
134
DN 25
115
85
14
FDR 32
B - GHG = 1 ¼"
80
138
DN 32
140
100
18
For assembly, start-up and maintenance, please adhere to the instruction manual that comes with each device!
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