24
DGMFN Flow Control Valves
General Description
These valves are adjustable,
non-compensated flow restrictors. An
integral check valve around the
regulating orifice allows free flow in one
direction and metered flow in the other.
Control is available in “A” only, “B” only,
and “A” and “B” ports as an “X” type
(meter–in) or “Y” type (meter-out).
The “P” port is available only in the “X”
type (meter-in) and does not contain a
reverse flow check.
The valve flow setting is adjustable by
means of either a hex key adjusting
screw and locknut, a hand-adjust knob,
or a micrometer knob with keylock.
A normal or fine metering capability
is available. See the pressure
drop curves on page 26 for detailed
performance difference.
3 45 10871 2
Model Code
1
2
Valve function
Manifold or subplate mounted flow
control valve.
Interface
5 - ISO 4401-AC-05-4-A, CETOP 5
Size 5 RP35H ANSI/NFPA D05
5N - NFPA D05 (Alt. A)
5P - NFPA D05 (Alt. B)
Direction of flow
X - Meter-in
Y - Meter-out
3
4
Port operated upon
A - Cylinder port “A” (single or dual type)
B - Cylinder port “B” (single type only)
P - Pressure port (single type only)
Adjustment range
1 - Fine control
2 - Normal control
Adjustment device
H - Knob adjuster
K - Micrometer knob with keylock
W - Screw with locknut
Port operated upon:
second function
(Omit for single flow control models.)
B – B cylinder port (Dual type)
Adjustment range:
second function
(Omit for single flow control models.)
1 - Fine control
2 - Normal control
Adjustment device:
second function
(Omit for single flow control models.)
H - Knob adjuster
K - Micrometer knob with keylock
W - Screw with locknu
Design number - 30 series
Subject to change. Installation
dimensions unaltered for design
numbers 30 to 39 inclusive.
9
8
10
6 9
5
6
7
25
Functional Symbols
A
P
P
T
DGMFN-5-X-P**-30
B
AB
T
A
P
P
T
DGMFN-5-Y-A**-B**-30
B
AB
T
A
P
P
T
DGMFN-5-Y-A**-30
B
AB
T
A
P
P
T
DGMFN-5-X-B**-30
B
AB
T
A
P
P
T
DGMFN-5-X-A**-B**-30
B
AB
T
A
P
P
T
DGMFN-5-X-A**-30
B
AB
T
A
P
P
T
DGMFN-5-Y-B**-30
B
AB
T
A
P
P
T
DGMFN-5P-X-P**-30
B
AB
T
A
P
P
T
DGMFN-5P-Y-A**-B**-30
B
AB
T
A
P
P
T
DGMFN-5P-Y-A**-30
B
AB
T
A
P
P
T
DGMFN-5P-X-B**-30
B
AB
T
A
P
P
T
DGMFN-5P-X-A**-B**-30
B
AB
T
A
P
P
T
DGMFN-5P-X-A**-30
B
AB
T
A
P
P
T
DGMFN-5P-Y-B**-30
B
AB
T
X
X
Y
Y
X
X
Y
Y
X
X
Y
Y
X
X
Y
Y
X
X
Y
Y
X
X
Y
Y
X
X
Y
Y
A
P
P
T
DGMFN-5N-Y-A**-B**-30
B
AB
T
A
P
P
T
DGMFN-5N-Y-A**-30
B
AB
T
A
P
P
T
DGMFN-5N-X-B**-30
B
AB
T
A
P
P
T
DGMFN-5N-X-A**-B**-30
B
AB
T
A
P
P
T
DGMFN-5N-X-A**-30
B
AB
T
A
P
P
T
DGMFN-5N-Y-B**-30
B
AB
T
X
X
Y
Y
X
X
Y
Y
X
X
Y
Y
X
X
Y
Y
X
X
Y
Y
X
X
Y
Y
DGMFN-5N-X-P**-30
(models not available)
26
Operating Data
Basic Characteristics
Maximum flow: 120 l/min (32 USgpm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum operating pressure: 315 bar (4500 psi). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating temperature: 20 to 50 C (70 to 120 F). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weight: 3,1 kg (6.8 lbs.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum Controlled Flow/No-Flow Leakage
Internal leakage will vary from valve to
valve and with the pressure differential
across the check.
Approximate levels are:
Pressure Drop
bar (psi)
Leakage*
cc/min (in
3
/min)
50 (725) 160 (9.5)
100 (1450) 320 (19)
200 (2900) 640 (38)
315 (4500) 990 (60)
* Equals minimum controllable flow rate at the
pressures stated.
Pressure Drop
The curves below show the pressure
drop through individual flow passages.
Curves labeled “metered flow/pressure
drop” refer to the pressure drop through
only the passage containing the flow
control regulating orifice. Total valve
insertion loss is a value derived from
graph 1 or 2 plus the appropriate values
of lines 1, 2 and 3 from graph 3.
Graph 1
Pressure Drop bar
Pressure Drop psi
150
100
1000
00
Flow l/min
Flow USgpm
20 40 60 80 100 120
51015202530
50
300
250
2000
4000
5000
350
Graph 2
Graph 3
200
3000
Metered flow pressure drop.
Normal adjustment – “2”
models (see model code,
page 24).
10 turns
8 turns
6 turns
1 turn
1 1/2 turns
2 turns
4 turns
150
100
1000
00
Flow l/min
Flow USgpm
20 40 60 80 100 120
510 15 20 2530
50
300
250
2000
4000
5000
350
200
3000
Metered flow pressure drop.
Fine adjustment – “1” models
(see model code, page 24).
1/2 turn
2 turns
3 turns
4 turns
8 turns
7 turns
1 turn
6
4
40
00
Flow l/min
Flow USgpm
40 80 120
10 20
2
20
12
8
60
80
100
120
160
Free flow pressure drop across
check valve.
10
140
30
1
2
3
9 turns
Graph 3
1 – “P” port of all models except
DGMFN-5-X-P**-30
“B” and “T” ports of
DGMFN-5-X-P**-30
2 – “T” port of all models except
DGMFN-5-X-P**-30
“A” ports of
DGMFN-5-X-P**-30
3 –Pressure drop across reverse
free flow check valve
1/2 turn
Pressure Drop bar
Pressure Drop psi
Pressure Drop bar
Pressure Drop psi
Note: “Turn” or “Turns” on curves in graphs 1 and 2, above, refer to turn of adjustment
device from fully closed position.
27
Installation Dimensions
4 mounting holes ∅ 6,9 (0.27) through
∅ 9,50 (0.37) counterbore 36,5 (1.44) deep
for bolt extenders (order separately)
BKE-6M-50M (M6 metric) or
BKE-4-50M (.2500-20 UNC).
Torque: 11,3-14,7 Nm (100-130 lb. in.)
ISO 4401-AC-05-4-A
(NFPA D05)
Mounting surface
DGMFN-5-X-P & DGMFN-5-Y-A
Single Flow Controls
50
(1.97)
A
“W” models
(max. ext.)
13,5
(0.53)
128 (5.04)
37
(1.46)
11,7
(0.46)
B
71,6
(2.82)
max.
B
P
A
T
B
Wrench size
69,5
(2.74)
Hex key
Rotate clockwise
to decrease flow
mm (inches)
30
(1.18)
139 (5.47)
Model A B
DGMFN-5-X-P 60,4 (2.38) 28,4 (1.12)
DGMFN-5-Y-A 52,7 (2.07) 33,2 (1.31)
No hex plug on
DGMFN-5-X-P
models
3rd angle
projection
13 (1/2”)
4 (5/32”)
DGMFN-5-X-A
Single Flow Control
50
(1.97)
52,7
(2.07)
“W” models
(max. ext.)
ISO 4401-AC-05-4-A
(NFPA D05)
Mounting surface
13,5
(0.53)
128 (5.04)
37
(1.46)
11,7
(0.46)
33,2
(1.31)
71,6
(2.82)
max.
B
P
A
Wrench size
69,5
(2.74)
Hex key
Rotate clockwise
to decrease flow
mm (inches)
20
(0.79)
4 mounting holes
(See above for
specifications)
139 (5.47)
13 (1/2”)
4 (5/32”)
T
A
T
B
T
A
See page 38 for interface dimensions.
See page 37 for optional adjustment devices.
28
Hex key
Rotate clockwise to
decrease flow
DGMFN-5-X-B
Single Flow Control
50
(1.97)
52,7
(2.07)
“W” models
(max. ext.)
ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface
13,5
(0.53)
128 (5.04)
37
(1.46)
11,7
(0.46)
33,2
(1.31)
71,6
(2.82)
max.
B
P
A
Wrench size
69,5
(2.74)
mm (inches)
20
(0.79)
139 (5.47)
DGMFN-5-Y-B
Single Flow Control
50
(1.97)
52,7
(2.07)
“W” models (max. ext.)
13,5
(0.53)
128 (5.04)
37
(1.46)
11,7
(0.46)
33,2
(1.31)
71,6
(2.82)
max.
B
P
A
Wrench size
69,5
(2.74)
Hex key
30
(1.18)
139 (5.47)
Rotate clockwise to
decrease flow
4 mounting holes
(See page 27 for
specifications)
4 mounting holes
(See page 27 for
specifications)
13 (1/2”)
4 (5/32”)
4 (5/32”)
13 (1/2”)
ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface
T
B
T
A
T
B
T
A
See page 38 for interface dimensions.
See page 37 for optional adjustment devices.
29
Hex key
DGMFN-5-Y Dual Flow Control
mm (inches)
50
(1.97)
52,7
(2.07)
“W” models (max. ext.)
typ. both ends
13,5
(0.53)
128 (5.04)
37
(1.46)
11,7
(0.46)
33,2
(1.31)
71,6
(2.82)
max.
B
P
A
Wrench size
both ends
69,5
(2.74)
Hex key
30
(1.18)
ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface
Rotate clockwise to
decrease flow in
port “B”
Rotate clockwise to
decrease flow in
port “A”
DGMFN-5-X Dual Flow Control
mm (inches)
50
(1.97)
52,7
(2.07)
“W” models (max. ext.)
typ. both ends
128 (5.04)
37
(1.46)
11,7
(0.46)
33,2
(1.31)
71,6
(2.82)
max.
B
P
A
Wrench size
both ends
69,5
(2.74)
20
(0.79)
ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface
Rotate clockwise to
decrease flow in
port “B”
Rotate clockwise to
decrease flow in
port “A”
4 mounting holes (See page 27
for specifications)
4 mounting holes (See page 27
for specifications)
13 (1/2”)
4 (5/32”)
13,5
(0.53)
13 (1/2”)
4 (5/32”)
T
B
T
A
T
B
T
A
See page 38 for interface dimensions.
See page 37 for optional adjustment devices.
