CAT: BFP/VCAR
CMP-MR/MW
T
P
IE/CMP_MR-MW/001/2011
1
SHEET: 1/1
Q (l/min)
P(bar)
0
15
30
45
60
75
90
0
12
345
6
Q (l/min)
P(bar)
0
50
100
150
200
250
300
0
12
345
6
Q (l/min)
P(bar)
0
6
12
18
24
30
36
0
12
345
6
25 ÷ 80 bar 75 ÷ 220 bar 5 ÷ 30 bar
19
34
max
Ø12
M15x1
1
16÷19 Nm
10 17
14
3
A
P
T
max 5 Nm
DIRECT ACTING PRESSURE RELIEF VALVES (FOR POWER PACKS SERIES MR/MW)
HYDRAULIC FEATURES
PRESSURE-FLOW RATE
HYDRAULIC SYMBOL
Fluid used: mineral based oil with viscosity 32 mm²/s at 50°C.
Max. working pressure
220 bar
Setting range:
Spring A
Spring C
Spring C
25 ÷ 80 bar
75 ÷ 220 bar
5 ÷ 30 bar
Max. Flow 6 l/min
Hydraulic fluid DIN 51524 Mineral oils
Fluid viscosity
10 ÷ 500 mm
2
/s
Fluid temperature
-25°C ÷ 75°C
Ambient temperature -25°C ÷ 60°C
Max. contamin. level class with filter ISO 4406:1999 - class 19/17/14
Weight 0.05 kg
Tightening torque see draw
Cavity (M15x1) CN033001 (See section 15)
The minimum permissible setting pressure depending on the spring: see curves below
PRESSURE RELIEF VALVES
ORDERING CODE
Code
Identification
(see draw)
Setting
range
Pressure increasing at
each turn of screw
21000010.000
A 25 ÷ 80 bar 17 bar ± 10%
21000011.000
B 75 ÷ 220 bar 45 bar ± 10%
21000009.000
C 5 ÷ 30 bar 7 bar ± 10%
Pressure
identification
The direct acting relief valve limits the pressure in a hydraulic circuit.
It raises the safety level by making it impossible for the plant operators to set
a higher pressure rating, than that specified in the catalogue. It has a pack
spring with a mechanical stop.
It has a galvanised steel body. The guided ball poppet is in tempered and
ground steel.
00012002
Spare seals kit
Page: 13
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