FLUID POWER SYMBOL
TUCSON
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Umbergaon, Gujarat
C1B 246/5, G.I.D.C. Indl. Estate
tucson@vsnl.com
3D ISOMETRIC VIEW
12
OVERCENTRE VALVEDGMR3
Specifications
Figures based on: Oil Temp = 40°C Viscosity = 40 cSt
Max Flow 40 lpm
Max Pressure 350 bar
Cartridge Material
Working parts : Hardened, ground steel
External surfaces : Zinc plated
Weight
DGMR3 A/B: 1.32 kgs
DGMR3 W: 1.70 kgs
Manifold Material SG Iron
Mounting CETOP3
Seal Kit Number SKDGMR3 (Nitrile) SKDGMR3V (Viton
®
)
Filtration Level BS5540/4 Class 18/13 (25µ nominal)
Operating Temp -20°C to +90°C (Standard Seals)
Leakage Less than 0.3 millilitres/min (5 dpm)
Viscosity Range 5 to 500 cSt
Application
When used with paired cylinders,
overcentre valves assist balancing of
the load by transferring part of the
load from the heavily loaded cylinder
to the less loaded cylinder. When used
with open center DCVs, deceleration
control can also be provided. A high
pilot ratio improves the efficiency of a
hydraulic system, but stability may
suffer for overrunning cylinders.
Operation
A fine tread on the adjustable throttle
reveals an annular gap, controlling the
flow in the forward/reverse direction.
The adjusted throttle cross-section
produces a pressure drop which
determines the volume flow. Flow
to/from either of the actuator ports (A
or B) allow free flow in the opposite
direction.
Features
Compact hydraulic system through
stack mounting.
Improved system
response.
Eliminates system
resonance.
Excellent reliability
through high strength components.
Cartridge design permits service
without removing valve from stack.
12-340.A
DGMR3 A
DGMR3 B
DGMR3 W
TP A B
PRESSURE CHARACTERISTICS
TO ORDER
T
UCSON
H
YDROCONTROLS
www.tucsonhydrocontrols.com
tucson@vsnl.com
Umbergaon, Gujarat
C1B 246/5, G.I.D.C. Indl. Estate
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
12
12-340.B
BASIC CODE
CONTROL LOCATION
A - A LINE
B - B LINE
W - DUAL
ADJUSTMENT
F: SCREW ADJUST
PRESSURE RANGE
20: 70 to 225 bar. Std setting 100 bar
35: 70 to 350 bar. Std setting 210 bar
BASIC CODE: DGMR3 W
CETOP3
COMPLETE VALVE
DGMR3 W F 35 7
AREA RATIO
7: RATIO OF 7:1
BASIC CODE: DGMR3 A
CETOP3
COMPLETE VALVE
CETOP3
COMPLETE VALVE
BASIC CODE: DGMR3 B
46
61
88
46
Pressure (bar)
Flow (lpm)
0 10 20 30 40
0
4
8
12
16
20
==
46
46
0
0
10
20
30
40
50
50 60
FREE FLOW
PILOT OPEN
88
==
O 5,4 THRO'
4 PLACES
57,5
==
46
110
O 5,4 THRO'
4 PLACES
O 5,4 THRO'
4 PLACES
58,5
46
52,2 MAX. 52,2 MAX.
52,2 MAX.52,2 MAX.
