61 200/110 ED
1/2
61 200/110 ED
0.75
T
B
31.75
P
A
25.9
15.5
5.1
12.7
31
M5
Ø4
Ø7.5 (max)Ø7.5
(max)
21.5
30.2
40.5
33
MCD
DIRECT OPERATED
PRESSURE RELIEF VALVE
SERIES 51
PERFORMANCES (measured with mineral oil of viscosity 36cSt at 50°C)
HYDRAULIC SYMBOLS
OPERATING PRINCIPLEMOUNTING INTERFACE
— The MCD valve is a direct operated pressure relief valve made
as a modular version with mounting surface according to the
ISO 4401 (CETOP RP 121H) standards.
— It can be assembled with all ISO 4401-03 (CETOP 03) modular
valves without use of pipes, using suitable tie-rods or bolts.
— It is available in versions for single adjustment on one control
line, or dual on two control lines and with four different pressure
adjustment ranges.
— This valve is normally used as a hydraulic circuit pressure
limiting device or as a limiting device of the pressure peaks
generated during the movement of hydraulic actuators.
— It is normally supplied with a hexagonal head adjustment
screw, locking nut and limitation of the maximum adjustment
travel.
ISO 4401-03-02-0-05
(CETOP 4.2-4-03-350)
CONFIGURATIONS (see Hydraulic symbols table)
— “SP”: controls the pressure on line P with discharge in T.
— “SAT”: controls the pressure on line A with discharge in T.
— “SBT”: controls the pressure on line B with discharge in T.
— “DT”: controls the pressure on lines A-B with discharge in T.
— “D”: controls the pressure on lines A-B with crossed discharges
— “SB”: controls the pressure on line B with discharge in A.
MODULAR VERSION
ISO 4401-03 (CETOP 03)
p max
350 bar
Q max (see table of performances)
Maximum operating pressure bar 350
Minimum controlled pressure see ∆p diagram.
Maximum flow rate in controlled lines
Maximum flow rate in the free lines
l/min
50
75
Ambient temperature range °C -20 / +50
Fluid temperature range °C -20 / +80
Fluid viscosity range cSt 10 ÷ 400
Fluid contamination degree
According to ISO 4406:1999
class 20/18/15
Recommended viscosity cSt 25
Mass: MCD-SP / MCD-SAT / MCD-SBT /
MCD-SB
MCD-DT / MCD-D
kg 1,4
2,0
61 200/110 ED
2/2
DUPLOMATIC OLEODINAMICA S.p.A.
20015 PARABIAGO (MI) Via M. Re Depaolini 24
Tel. +39 0331.895.111
Fax +39 0331.895.339
www.duplomatic.com e-mail: sales.exp@duplomatic.com
MCD
SERIES 51
REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.
1 - IDENTIFICATION CODE
2 - CHARACTERISTIC CURVES (values obtained with viscosity of 36 cSt at 50°C)
4 - OVERALL AND MOUNTING DIMENSIONS
1) pressure drops on
controlled lines with
calibrated screw at
the beginning of the
adjustment (minimum
controlled pressure)
2) pressure drops
on free lines
ADJUSTMENT
PRESSURE DROPS ∆p - Q
Seals:
N = NBR seals for mineral oils (standard)
V = FPM seals for special fluids
Series No. (the overall and mounting
dimensions remain unchanged from 50 to 59)
Configurations:
SP: single on line P with discharge in T
SAT: single on line A with discharge in T
SBT: single on line B with discharge in T
DT: double on lines A-B with discharge in T
D: double on lines A-B with crossed discharges
SB: single on line B with discharge in A
Pressure adjustment range
2 = up to 25 bar 5 = up to 210 bar
3 = up to 70 bar 6 = up to 350 bar
4 = up to 140 bar
Size: ISO 4401-03
(CETOP 03). Modular version
Direct operated
pressure relief valve
omit for adjustment with countersunk
hex screw - standard
K = Adjustment knob
M C D - / 51 /
3 - HYDRAULIC FLUIDS
Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. For these fluids, use NBR seals. For fluids HFDR type
(phosphate esters) use FPM seals (code V). For the use of other kinds of fluid such as HFA, HFB, HFC, please consult our technical
department. Using fluids at temperatures higher than 80 °C causes a faster degradation of the fluid and of the seals characteristics.
The fluid must be preserved in its physical and chemical characteristics.
MCD*-SBTMCD*-SBT
152152
100100
MCD*-SBMCD*-SB
105105
157157
MCD*-SPMCD*-SP
11.511.5
MCD*-SATMCD*-SAT
4040
152152
100100
4040
4040
4848
5252
4646
MCD*-DTMCD*-DT
MCD*-DMCD*-D
235235
131131 5252
3
2
1
4646
7.57.5
45.545.5
B
A
P
T
dimensioni in mm
1 Locking nut: spanner 19
2 Countersunk hex adjustment screw:
spanner 6 (standard)
Rotate clockwise to increase
pressure
3 Mounting surface with sealing rings:
4 OR type 2037 (9.25x1.78) 90 Shore
4 Adjustment knob: K
5 Locking ring
