1
up to 350 bar
up to 160 l/min
Flow Control Valves
DVE
2
1. DESCRIPTION
1.1. GENERAL
HYDAC flow control valves
DVE are, in accordance with
DIN-ISO 1219, valves which are
designed to control the flow rate
in oil hydraulic systems by means
of an adjustable constriction of
the cross-section.
The flow rate is dependent on
pressure differential and viscosity.
HYDAC flow control valves DVE
have a specially designed throttle
mechanism to enable fine
adjustment and shut-off of the
flow. The flow control and shut-off
function works in both directions.
Further advantages of these
valves are:
Compact construction as
cartridge valve.
For installation in control blocks.
A high level of safety is achieved
through patented spindle safety
mechanism.
A set-screw locks the setting.
Choice of four sizes ensures best
possible adaptability to the
system.
Simple assembly due to service-
friendly cartridge valve
technology.
Mounting position is optional.
1.3 APPLICATIONS
HYDAC flow control valves DVE
are used:
for regulating the speed of loads
for system-related damping in
hydraulic circuits
for pressure-dependent control of
flow rates in general
to release pressure from
accumulator systems
as an emergency drain for
lowering a load
Areas of application include,
for example:
Hydraulic units
Elevating platforms
Mobile hydraulics
1.4. NOTE
When fitting the valves into
control blocks and housings the
recommended torque ratings
must be observed.
1 Control knob
2 Set-screw
3 Control spindle
4 Valve body
5 Throttle opening
1.2. FUNCTION
HYDAC flow control valves
consist essentially of a valve
body, a special control spindle
and the control knob. Starting with
the control spindle in the fully
closed position when the flow is
shut off, the flow rate increases
according to the relevant graph
(see point 2.2.8) as the number of
turns of the control knob is
increased.
The control knob with its coloured
scale and scale rings permits
accurate repetition of the settings.
The size of the coloured triangle
on the rings indicates the size of
the flow area. An increase in the
size of the coloured triangle
corresponds to an increase in flow
area. A set-screw locks the
setting. The flow is controlled in
both directions.
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2. TECHNICAL
SPECIFICATIONS
2.1. GENERAL
2.1.1 Designation and symbol
Flow control valve DVE
Please quote stock no. when ordering.
Delivery for non-standard models is longer and the price is higher.
Standard models
Stock no. Model code
705 426 DVE-08-01.X/0
705 430 DVE-10-01.X/0
705 434 DVE-12-01.X/0
705 438 DVE-16-01.X/0
2.1.2 Model code
(also order example)
DVE - 10 - 01 . X / 0
Designation
DVE = flow control valve
Size
08
10
12
16
Type
01 = technical specifications as per this brochure
12 = nickel-plated valve body, steel spindle with 0.3 mm throttle gap,
protective dome nut, adjustment with tool
Series
(determined by manufacturer)
Threaded connection
0 = parallel pipe thread to ISO 228
2.1.3 Type of construction
Slot type flow control valve
with shut-off function
2.1.4 Type of mounting
Cartridge valve
2.1.5 Mounting position
Optional
2.1.6 Weight
DVE-08 ... 0.15 kg
DVE-10 ... 0.25 kg
DVE-12 ... 0.50 kg
DVE-16 ... 0.70 kg
2.1.7 Direction of flow
Optional
preferably from A to B
2.1.8 Ambient temperature range
min. 20 °C
max. + 80 °C
2.1.9 Materials
Valve body:
free-cutting steel, phosphate-
plated
Control spindle:
free-cutting steel, phosphate-
plated
Control knob:
polyamide
Seals:
FPM and PTFE
2.1.10 Nominal size
NG08
NG10
NG12
NG16
2.1.11 Type of connection
Cartridge valve for fitting into
control blocks.
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2.2. HYDRAULIC DETAILS
2.2.1 Nominal pressure
p
N
= 350 bar
across all ports
2.2.2 Operating fluid
Mineral oil to DIN 51524 Part 1 and 2
2.2.3 Fluid temperature range
min. 20 °C
max. + 80 °C
2.2.4 Viscosity range
min. 2.8 mm²/s
max. 800 mm²/s
2.2.5 Filtration
Max. permissible contamination level of the operating
fluid to ISO 4406 Class 21/19/16 (NAS 1638 class 10).
We therefore recommend a filter with a minimum
retention rate of b
20
³ 100.
The fitting of filters and regular replacement of
elements guarantees correct functioning, reduces wear
and tear and increases the service life.
2.2.6 Type of adjustment
Manually using control knob or on model 12,
using Allen key.
2.2.7 Flow rate
DVE-08...Q = 50 l/min
DVE-10...Q = 80 l/min
DVE-12...Q = 160 l/min
DVE-16...Q = 160 l/min
2.2.8 Pressure drops, dependent on flow rate
Pressure differential Dp depending on flow rate Q at
constant flow setting measured at
n = 34 mm²/s and t
oil
= 46 °C.
DVE-08-01.X
DVE-10-01.X
DVE-12-01.X
DVE-16-01.X
2.2.9 Accessories
Metal control knobs, zinc-plated
The metal control knobs with Flutec label are
pre-assembled.
Size Stock no.
08 550 023
10 550 066
12 550 066
16 550 066
When ordered, the accessories are supplied loose with
the standard valve.
Please quote the stock number when ordering.
2.2.10 Seal kits
Stock no. Type
555090 Seal kit size NG08 DV/P DRV/P DVE RVP SRVR/P
555091 Seal kit size NG10 DV/P DRV/P DVE RVP SRVR/P
555092 Seal kit size NG12 DV/P DRV/P DVE RVP SRVR/P
555093 Seal kit size NG16 DV/P DRV/P DVE RVP SRVR/P
flow setting in turns
flow setting in turns
flow setting in turns
flow setting in turns
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3. DIMENSIONS
DVE
Type:
INSTALLATION DIMENSIONS
4. NOTE
The information in this brochure relates to the operating conditions and applications described.
For applications or operating conditions not described, please contact the relevant technical department.
Subject to technical modifications.
closed
open
A B C D E F G H SW SW1 SW2 X Torque
rating
26 47 40 12 5 14 29 G ½ A 27 4 13 44 30 + 5
30 64 54 12.5 8 16 38 G ½ A 27 5 17 58 40 + 5
40 65 54 13.5 9.5 19 38 G ¾ A 32 6 19 64 50 + 5
43.5 65 55 17.5 11 27 38 G 1 A 41 6 19 64.5 75 + 5
Size Installation H J K+0.1 Lmax MH8 Nmax 0 Pmin R+1 S T+0.1
dimensions
08 08920 G ½ 32 24 14 14 5 17.5 14 26 14 1.9
10 10920 G ½ 32 24 16 16 8 20.5 14 30 16.5 1.9
12 12920 G ¾ 38 30 19 19 10 29 21 40 24 1.9
16 16920 G 1 48 36 27 27 12 30 21 44 24.5 2.4
Installation
dimensions Tool stock numbers
Counter- Forming Plug
sink tool Reamer Tap gauge
08920 170854 169169 1014205 1002667 173839
10920 170863 169169 1000772 1002667 173840
12920 170862 170844 1000778 1002663 173841
16920 170861 170843 1014208 1002661 173842
