Typical Sectional View
38
SystemStak Flow Regulator Valves
DGMFN-2-1* series
General description
These valves regulate flow by means of
an adjustable orifice. Flow through the
valve at any setting of the orifice is
dependent upon pressure drop.
Dual service-line models with integral
non-return valves provide for meter-in or
meter-out control; single line versions of
these are available. Additionally there is
a single line model, without check valve,
for controlling flow in line P.
Adjustment options are screw/locknut,
handknob or micrometer with keylock.
PT B A
DGMFN-2-X-A*-B*
PT BA
PT BA
Functional Symbols
DGMFN-2-Y-A*-B*
DGMFN-2-Z-P*
3 5 61 2
1
Model Series
Manifold or gasket mounted
Interface
2 – ISO/DIS 4401-02-02
Direction of flow control (with
respect to machine actuator)
Type
FN – Flow restrictor
2
3
4
Design
Subject to change. Installation
dimensions unchanged for design
numbers 10 thru 19.
X – Meter-in control, applicable to
lines A and B.
4
Model Code
7 9
Y – Meter-out control, applicable to
lines A and B.
Control in second line
B – Line B (use for dual models
with “A” specified at )
Omit for single function models
7
9
8
Z – Meter-in control, line P only.
Location of control function
(single model or first line of dual
model)
5
A – Line A (single model or first
line of dual model)
B – Line B (single model only)
P – Line P (single model only)
Adjustment type
H – Handknob
K – Micrometer with keylock
W – Screw and locknut
6
5
Adjustment type
(Omit for single models)
H – Handknob
K – Micrometer with keylock
W – Screw and locknut
8
39
Operating Data
Maximum flow rate 30 l/min (7.9 USgpm)
Maximum operating pressure 250 bar (3600 psi)
Hydraulic fluids
Filtration requirements
Refer to appendix
Temperature limits
Mass, approximate 0,42 kg (0.92 lb.)
Mounting attitude No restrictions
Performance Data
Typical performance with mineral oil at
21 cSt (102 SUS) and at 50C (122F).
Control characteristics Pressure Drop
Flow rate versus pressure drop for number Free flow through check valve with throttle closed and open.
of turns of adjuster from fully closed position.
With throttle
fully open
For other viscosities refer to appendix.
psi bar
0
5
10
15
20
25
200
0
100
300
51015202530l/min 0
0 1 2 3 4 5 6 7 7.9USgpm
With throttle
fully closed
Pressure drop
Flow rate
psi bar
250
200
150
100
50
0
0
1000
2000
3000
3600
121
1
/
4
1
1
/
2
1
3
/
4
2
1
/
4
2
1
/
2
2
3
/
4
3
3
1
/
4
3
1
/
2
3
3
/
4
4
0 1 2 3 4 5 6 7 7.9
51015202530l/min
USgpm
Flow rate
0
Pressure drop
40
Installation Dimensions
41,5
(1.63 max.)
79,2 (3.12)
25,0
(0.99)
square
25,0
(0.99)
Dual Function
DGMFN-2-X-A*-B*-1*
DGMFN-2-Y-A*-B*-1*
Dimensions shown in mm (inches)
4 holes thru
5,5 (0.21 dia.)
50,0 (1.97)
108,4 (4.27) max.
17,5
(0.69)
36,8
(1.45)
Hex locknut 12,7 (1/2”)
across flats
30,0
(1.18)
3,0
(0.12)
3,0 (0.12 dia.)
12,7
(0.5)
35,0
(1.38)
15,0
(0.59)
Line A
adjustment
Line B
adjustment
Single Function
DGMFN-2-X-A*-1*
DGMFN-2-Y-A*-1*
Single Function
DGMFN-2-X-B*-1*
DGMFN-2-Y-B*-1*
DGMFN-2-Z-P*-1*
29,2
(1.15)
50,0
(1.97)
29,2
(1.15)
50,0 (1.97)
79,2 (3.12)
W adjuster (Shown)
To adjust valve setting. loosen
locknut and turn adjuster screw
clockwise to decrease flow
(increase restriction),
counterclockwise to increase
flow (reduce restriction).
Re-tighten locknut after
completing adjustment.
H adjuster
To adjust valve setting. loosen
locknut and turn knob clockwise
to decrease flow (increase
restriction), counterclockwise to
increase flow (reduce
restriction). Re-tighten locknut
after completing adjustment.
K adjuster
Key must be inserted and turned to
allow valve setting to be adjusted.
Turn knob clockwise to decrease
flow (increase restriction),
counterclockwise to increase flow
(reduce restriction). When key is
removed, adjustment mechanism
can be freely turned without
changing valve setting.
20,0
(0.78)
26,0
(1.02)
69,0 (2.72)
25,0
(1.0 dia.)
Adjuster screw
4,0 (5/32”)
across flats hex.
socket
A
B
P
T
A
B
P
T
A
B
P
T
