1
Functional Description
Double throttle valves are used to control flow rates in
two separate lines (A, B) of a hydraulic circuit.
The valve body (1) has drilled channels and the throttle
valve is built into channel A or B or into channels A and
B. They restrict the fluid flow in one direction while
providing reverse free-flow in the opposite direction.
The throttling spool (2) is adjusted by means of set
screw (3) and each spool position corresponds with a
certain area of the flow passage.
Fluid entering port A1 is throttled to port A2 via a groove
and an annulus area. Fluid entering port B2 shifts the
valve seat (4) against the spring (5), thus creating a
passage which allows reverse free-flow to port B1
(function of a check valve).
The modular design enables simple vertical stacking
with other components of the same size. A separate
O-ring plate (6) with fitted O-rings is mounted
underneath the valve body, thus providing its sealing.
According to the valve arrangement, the meter-in or
meter-out control is provided. Changing the meter-in
mode into the meter-out mode can be done by turning
the valve body by 180° around its x-axis.
The orientation of the throttle/check valves in the valve
body corresponds with the symbols shown on the name
plate.
The basic surface treatment of the valve housing (1) is
phosphate coated, whereas the surfaces of the other
parts are zinc coated.
VSO2-10/MCS (meter-out control)
q
Modular design for use in vertical stacking
assemblies
q
Meter-in or meter-out control
q
Three functional symbols:
- throttle valve in line A
- throttle valve in line B
- throttle valves in lines A and B
q
Flow adjustment - hexagon set screw with
locknut and protective cap
q
Installation dimensions to ISO 4401-05-04-0-94
and DIN 24 340-A10
HA 5056
6/2012
Replaces
HA 5056 5/2008
Size 10 · p
max
350 bar · Q
max
100 L/min
Double Throttle Check Valves
Sandwich Plates
VSO2-10/M
2
HA 5056
VSO2-10/M
Nominal size
Modular design
Double Throttle Check Valve
Adjustment element
S Set screw with inside hexagon
Seals
no designation Standard (NBR)
V Viton (FPM)
Ordering Code
Notes: valve side
subplate or manifold side
The orientation of the symbol shown on the name plate corresponds with the function of the valve
(meter-out control).
Technical Data
Caution!
The packing foil is recyclable.The protective plate can be returned to manufacturer.
Mounting bolts must be ordered separately. Tightening torque of the screws is 15 Nm.
The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should
not be construed in any case as a guaranteed representation of the product properties in the sense of the law.
Nominal size mm 10
Maximum flow rate L/min 100
Maximum operating pressure bar 350
Hydraulic fluid Hydraulic oils of power classes (HL, HLP) to DIN 51524
Fluid temperature range for (NBR) °C -30 ... +100
Fluid temperature range for ( Viton) °C -20 ... +120
Viscosity range mm 2/s 20 ... 400
Maximum degree of fluid contamination Class 21/18/15 according to ISO 4406
Weight kg 2.15
Mounting position unrestricted
A
B C
Functional Symbols
Functional Symbols
A
B
C
check valve in line A*
check valve in line B*
check valves in lines A and B*
* see Functional Symbols
3
HA 5056
Dp-Q Characteristics
Measured at n = 32 mm
2
/s
Throttle valve
Pressure defference Dp related to flow from A1 to A2, (from B1 to B2)
- Throttle setting in turns (from the end stop)
Flow [L/min]
Check valve
Pressure difference Dp related to flow from A2 to A1, (from B2 to B1)
Flow [L/min]
Throttle valve
closed
Spare Parts
Pressure difference Dp [bar]Pressure difference Dp [bar]
Seal kit
Type
Dimensions, quantity
Ordering number
O-ring Square ring
Standard NBR70 - 12.42x1.68 (5 pcs.) 15991600
Viton 12.42x1.68 (5 pcs.) - 22943800
Throttle valve
open
4
HA 5056
Valve Dimensions Dimensions in millimetres
Required surface finish of
interface
1 Name plate
2 Set screw with inside HEX 5
Clockwise rotation = flow increase
Counterclockwise rotation =
= flow decrease
3 Lock nut HEX 10
4 Protective cap
5 Sealing ring (5 pcs.)
Standard (NBR) R 014S 12.42 x 1.68
Viton (FPM) 12.42 x 1.78
supplied in each delivery packet
6 4 mounting holes (
Æ 6.4 mm)
7 O-ring plate
Turning the valve around the x-axis
changes the meter-out control mode
into the meter-in one.
Subject to alteration without notice!
ARGO-HYTOS s.r.o. CZ - 543 15 Vrchlabí
Tel.: +420-499-403111, Fax: +420-499-403421
E-mail: sales.cz@argo-hytos.com
www.argo-hytos.com
VSO2-10/MCS
VSO2-10/MAS
VSO2-10/MBS
6
1
57
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