CAT: BFP/VCAR
CVR20
PRPP
T
Y
IE/CVR20/001/2011 SHEET: 1/1
CVR 20 * * ** 1
1 = CVR20.1..
2 = CVR20.2..
3 = CVR20.3..
2
1
2
3
015304560
75
90
0
25
50
75
100
125
150
175
200
225
250
275
300
Q (l/min)
P(bar)
3
2
1
01530
45
60 75 90
0
5
10
15
20
25
30
35
40
Q (l/min)
P(bar)
0153045607
59
0
3
2
1
0
25
50
75
100
125
150
175
200
225
250
275
300
Q (l/min)
P(bar)
17
5
24
Ø 34.5
Ø 26
Ø 17
Ø 19
M22 x 1.5
61.5 max
70 max
58.5
T
PP
PR
M
C
max 15 Nm
PRESSURE REDUCING VALVES WITH RELIEVING - PILOT OPERATED
HYDRAULIC SYMBOL
HYDRAULIC FEATURES
CVR = Pressure reducing valve with
relieving
ORDERING CODE
Series
Size
Adjustment
20 = M22 x 1,5
C = Screw
M = Plastic knob
1 = Serial No.
00 = No variants
V1 = Viton
SEQUENCE, PRESS.REDUCING AND UNLOADING
PRESSURE-FLOW OF RELIEVING
MIN.SETTING PRESSURE
Setting
ranges
1 = 60 bar (white spring)
2 = 120 bar (yellow spring)
3 = 250 bar (green spring)
Fluid used: mineral based oil with viscos-
ity 46 mm²/s at 40°C.
PRESSURE-FLOW RATE
Max. pressure 350 bar
Setting range:
Spring 1 (white)
Spring 2 (yellow)
Spring 3 (green)
max 60 bar
max 120 bar
max 250 bar
Maximum allowed ∆p pressure
between the inlet an outlet pressure
150 bar
Max. Flow 90 l/min
Max. draining on port T 0.5 ÷ 0.7 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 0.25 kg
Tightening torque 30 ÷ 40 Nm
Cavity (M22 x 1.5) CN047002 (See section 15)
The minimum permissible setting pressure depending on the spring: see curves.
Variants
The pilot-operated pressure reducing valve feeds a secondary branch of a circuit at a
lower pressure, guaranteeing minimum variation of the set pressure with flow altera-
tions of up to 90 l/min.
Slight leakage is tolerated for this type of valve.
It raises the safety level with the RELIEVING system that enables fluid to pass through
the valve from PR to T, preventing pressure increases in the controlled branch and pro-
tecting the load, and by making it impossible for plant operators to set a higher pressure
rating than that specified in the catalogue. It has a pack spring with mechanical stop.
It has a galvanised steel body. The plunger is in tempered and ground steel.
00012013
Spare seals kit
Page: 34
HOME INFO VALVES INDEX
