File: PV$3001_E 01/2000/eII • 2
2
Q (l/min)
P (bar)
Q (l/min)
P (bar)
Q (l/min)
P (bar)
Q (l/min)
P (bar)
1
2
3
3
2
1
1-2-3
3
2
1
These subplate mounting piloted type
pressure reducing and sequencing
valves ensure a minimum variation in
their calibrated pressure value with
changing flow rate.
They are normally supplied with inter-
nal piloting and internal drainage on
B, but they are already provided with
a hole on the front cover to allow for
external drainage.
They are available with two different
types of adjustment and three cali-
brated ranges that cover pressure 7 ÷
250 bar, with and without check valve.
The adjustment is carried out by means
of a grub screw or a metric plastic
knob.
ORDERING CODE
PV*.3 / PV*.U.3 PRESSURE REDUCING AND
SEQUENCING VALVES
CETOP 3/NG6
HYDRAULIC SYMBOLS
Max. pressure 320 bar
Setting ranges Spring 1 max. 60 bar
Spring 2 max. 120 bar
Spring 3 max. 250 bar
Maximum allowed ∆p pressure between
the inlet and outlet pressure (PVR only) 150 bar
Max. flow 40 l/min
Draining on port T 0.5 ÷ 0.7 l/min
Hydraulic fluids Mineral oils DIN 51524
Fluid viscosity 10 ÷ 500 mm
2
/s
Fluid temperature -25°C ÷ 75°C
Ambient temperature -25°C ÷ 60°C
Max. contamination lever class 10 in accordance
with NAS 1638 with filter ß
25
≥75
Weight (without check valve) 1,5 Kg
Weight (with check valve) 2 Kg
DIAGRAMS
PV* R = Reducing valve
S = Sequencing valve
U Check valve
(omit if not required)
3 CETOP 3/NG6
* Type of adjustment:
M = Plastic knob
C = Grub screw
* Setting ranges
1 = max. 60 bar (white spring)
2 = max. 120 bar (yellow spring)
3 = max. 250 bar (green spring)
** 00 = No variant
V1 = Viton
1 Serial No.
The fluid used is a mineral oil with viscosity of
46 mm
2
/s at 40°C. The tests were carried out
at a fluid temperature of 50°C.
PVR.3... / PVR.U.3...
PRESSURE - FLOW RATE
PVS.3... / PVS.U.3...
PRESSURE - FLOW RATE
PVR.3... / PVR.U.3...
MINIMUM SETTING PRESSURE
PVS.3... / PVS.U.3...
MINIMUM SETTING PRESSURE
Curves n° 1 - 2 - 3 = setting ranges
PVR.3...
PVR.U.3...
PVS.3...
PVS.U.3...
PVR.3 / PVS.3...
File: PV$3001_E 01/2000/eII • 3
2
PV*.3 / PV*.U.3 PRESSURE REDUCING AND SEQUENCING VALVES
OVERALL DIMENSIONS
OVERALL DIMENSIONS
REDUCING VALVE
PVR.3... CETOP 3/NG6
SEQUENCING VALVE
PVS.3... CETOP 3/NG6
REDUCING VALVE WITH CHECK VALVE
PVR.U.3... CETOP 3/NG6
SEQUENCING VALVE WITH CHECK VALVE
PVS.U.3... CETOP 3/NG6
Fixing screws UNI 5931 M5x50
with material specifications min. 8.8
Tightening torque 5 Nm / 0.5 Kgm
Fixing screws UNI 5931 M5x50
with material specifications min. 8.8
Tightening torque 5 Nm / 0.5 Kgm
Type of adjustment
M Plastic knob
C Grub screw
Support plane
specifications
Support plane
specifications
Type of adjustment
M Plastic knob
C Grub screw
