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P1 A1 B1T1
A
ab
B
PT
PABT
63 310/117 ED
A1
AB
P1
P
B1
PCM3
TWOβ€ˆAND THREE-WAY
PRESSURE COMPENSATOR
WITH FIXED OR VARIABLE
ADJUSTMENT
SERIES 10
HYDRAULIC SYMBOLS
OPERATING PRINCIPLEMOUNTING INTERFACE
β€” The PCM3 valve is available as two or three-way pressure
compensator, developed as modular version with
mounting surface according to the ISO 4401.
β€” Its aim is to keep the pressure drop setting (characteristic
βˆ†p) between the line P and alternatively the lines A and B,
at a constant level.
β€” It is used together with proportional directional valves, in
order to control the flow rate independently of pressure
variations.
β€” The selection of the pilot pressure on the lines A and B is
carried out automatically via a shuttle check valve built into
the compensator.
β€” The setting of the variable adjustment compensator
(characteristic βˆ†p) can be varied from 7 to 33 bar, via a
socket hex adjustment screw or an adjustment knob.
β€” The fixed adjustment compensator is available with setting
(characteristic βˆ†p) of 4 and 8 bar.
0.75
3
0.2
40.5
21.5
5.1
12.7
31.75
BA
T
P
M5
15.5
25.9
31
Ø 7.5ξ€ (max)
ISO 4401-03-02-0-05
(CETOP 4.2-4-03-350)
PCM3-PV/10 PCM3-P*/10
PCM3-PTV/10 PCM3-PT*/10
APPLICATION EXAMPLES
Two-way compensator with fixed
adjustment, combined with a
proportional valve type DSE3-A*
PERFORMANCES (working with mineral oil of viscosity of 36 cSt at 50Β°C)
P1 A1 B1T1
PABT
P1 A1 B1T1
PABT
P1 A1 B1T1
PABT
Max operating pressure bar 350
Characteristic βˆ†p: fixed adjustment
variable adjustment
bar
4 - 8
7 Γ· 33
Max flow rate l/min 40
Ambient temperature range Β°C -20 / +60
Fluid temperature range Β°C -20 / +80
Fluid viscosity range cSt 10 Γ· 400
Fluid contamination degree
According to ISO 4406:1999
class 20/18/15
Recommended viscosity cSt 25
Mass kg 1,5
MODULAR VERSION
ISO 4401-03
p max
350 bar
Q max 40 l/min
63 310/117 ED
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PCM3
SERIES 10
1 - IDENTIFICATION CODE
1.1 - Two-way compensator
Seals:
N = NBR seals for mineral oils (standard)
V = FPM seals for special fluids
Series no.:
(the overall and mounting dimensions remain
unchanged from 10 to 19)
Nominal size ISO 4401-03
2 ways
Pressure
compensator
Modular version
Adjustment:
V = variable from 7 to 33 bar
4 = 4 bar
8 = 8 bar
P C M 3 - P / 10 /
1.2 - Three-way compensator
Option: adjustment.
Available only for version with
variable adjustment (PV).
Omit for adjustment with socket
hex screw (standard)
K1 = adjustment knob
Seals:
N = NBR seals for mineral oils (standard)
V = FPM seals for special fluids
Series no.:
(the overall and mounting dimensions remain
unchanged from 10 to 19)
Nominal size ISO 4401-03
3 ways
Pressure
compensator
Modular version
Adjustment:
V = variable from 7 to 33 bar
4 = 4 bar
8 = 8 bar
P C M 3 - PT / 10 /
Option: adjustment.
Available only for version with
variable adjustment (PV).
Omit for adjustment with socket
hex screw (standard)
K1 = adjustment knob
63 310/117 ED
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PCM3
SERIES 10
P
CM3-PV
PCM3-P8
PCM3-P4
0
p
ξ€ [bar]
10
Qξ€ [l/min]
50 100 150 200
20
30
40
PCM3-PTV
PCM3-PT8
PCM3-PT4
0
pξ€ [bar]
10
Qξ€ [l/min]
50 100 150 200
20
30
40
0
Qξ€ [l/min]
10
[bar]
p
10 20 30 40
20
30
40
PCM3-PT4
PCM3-PT8
PCM3-PTV
0
Q
ξ€ [l/min]
10
[
bar]
p
10 20 30 40
20
30
40
P
CM3-PV
PCM3-P8
P
CM3-P4
2 - CHARACTERISTIC CURVES
(values obtained with viscosity of 36 cSt at 50Β°C)
2.1 - Two-way compensator
2.2 - Three-way compensator
FLOW RATE - PRESSURE Q = f (p) PRESSURE DROPS βˆ†p = f (Q)
FLOW RATE - PRESSURE Q = f (p) PRESSURE DROPS βˆ†p = f (Q)
3 - HYDRAULIC FLUIDS
Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. With this kind of fluids, use NBR seals type (code N). With
fluids HFDR type (phosphate esters) use FPM seals (code V). Using other fluid types such as HFA, HFB, HFC, please consult our technical
department.
Using fluids at temperatures higher than 80 Β°C causes a faster degradation of the fluid itself and of the seals characteristics. The fluid must be
preserved in its physical and chemical characteristics.
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PCM3
SERIES 10
REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.
4 - OVERALL AND MOUNTING DIMENSIONS
dimensions in mm
P
CM3-P*/10
PCM3-PT*/10
PCM3-PV/10*/K1
PCM3-PTV/10*/K1
PCM3-PV/10
PCM3-PTV/10
4
65
ΓΈ32
50
23
i
n
i
n
1
Mounting surface with sealing rings:
4 OR type 2037 - (9.25x1.78)
90 shore
2
Locking nut: spanner 17
3
Socket hex adjustment screw:
spanner 5
Clockwise rotation to increase
pressure
4
Adjustment knob: K1