Functional Description

Double throttle valves are used to control flow rates in

two separate lines (A, B) of a hydraulic circuit. The

modular design provides six functional symbols.

The throttle valve is built into channel A or B or into

channels A and B. The valve restricts the fluid flow in one

direction while providing reverse free-flow in the

opposite direction. The throttling spool (2) is adjusted

by means of a set screw (3) and each spool position

corresponds with a certain passage area.

Fluid entering port A1 is throttled to port A2 via a groove

and an annulus area. Fluid returning from port B2 shifts

the valve seat (4) against the spring (5), thus creating a

passage which allows reverse free-flow to port B1

(function as a check valve).

The sandwich design enables simple stacking with

other components of the same size.

The separate O-ring plate (6) with fitted O rings provides

sealing of the valve connecting surface. 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 by

180° around its horizontal axis. The orientation of the

throttle check valves in the valve body corresponds with

the symbols shown on the name plate. The set screw

can be operated by a key, by a hand knob or by a hand

knob with keylock.

The basic surface treatment of the valve housing is

phosphate coated, whereas the surfaces of the other

parts are zinc coated.

Sandwich plate design for use in vertical stacking

assemblies

Meter-in or meter-out control as required

Three possible arrangements:

- throttle valve in channel A

- throttle valve in channel B

- throttle valves in channels A and B

Flow adjustment - three adjustment elements

Installation dimensions to ISO 4401:1994

and DIN 24 340-A6

Subplates - see Catalogue HA 0002

     

HA 5051

7/2012

Replaces

HA 5051 5/2008

Size 06 · p

max

320 bar · Q

max

80 L/min

Double Throttle Check Valves

Sandwich Plates

2VS3-06

HA 5051

2VS3 - 06 -

Nominal size

Double Throttle Check Valve

Adjustment element

S Hexagon set screw with locknut and

protective cap

R Hand knob with scale

Z Hand knob with scale and keylock

Seals

no designation NBR

V Viton

Ordering Code

Notes:  valve side

 subplate or manifold side

The orientation of the throttle check valves in the valve body corresponds with symbols shown on the name

plate.

Nominal size mm 06

Maximum flow rate L/min 80

Maximum operating pressure bar 320

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

/s 20 ... 400

Maximum degree of fluid contamination Class 21/18/15 according to ISO 4406

Weight kg 1,2

Mounting position unrestricted

Spare Parts

Seal kit

Type

Dimensions, quantity

Ordering number

O-ring Square ring Back-up ring

Standard NBR

18 x 2.65 NBR70 (2 pcs.) 9.25 x 1.68 (4 pcs.) 6.73 x 9.43 x 1.14 (2 pcs.)

15936300

6.9 x 1.8 NBR70 (2 pcs.) - 17.83 x 22.19 x 1.14 (2 pcs.)

Viton

17.12 x 2.62 (2 pcs.) - 9.43 x 6.73 x 1.14 (2 pcs.)

159366009.25 x 1.78 (4 pcs.) - 17.83 x 22.19 x 1.14 (2 pcs.)

6.75 x 1.78 (2 pcs.) - -

Technical Data

FOR PREFERRED TYPES SEE BOLD TYPING IN ORDERING CODE AND TABLE OF

PREFERRED TYPES ON PAGE 3

Functional Symbols

check valve in line A*

check valve in line B*

check valves in lines A and B*

* see Functional Symbols

Functional Symbols





HA 5051

Dp-Q Characteristics

Measured at n = 32 mm

Caution!



The packing foil is recyclable.The protective plate can be returned to manufacturer.



Mounting bolts must be ordered separately. Tightening torgue is 8.9 Nm.



If the valve is used separately without a directional valve, a cover plate DK1-06/32-1 is to be ordered. This plate

connects port A1 with B1 and A2 with B2 respectively (suitable for models 2VS3-06-Ax and 2VS3-06-Bx) - see catalogue

Cover Plates and Crossover Cover Plates HA 0003.



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.

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 open

Throttle valve closed

Type Ordering Number

2VS3-06-CS 15929600

Preferred Types of Valves

Pressure difference Dp [bar]

Pressure difference Dp[bar]

HA 5051

Valve Dimensions Dimensions in millimetres

Required surface finish of

interface

1 Name plate

2 Adjustment element - Inside HEX 5

with lock nut and protective cup

3 Adjustment element - hand knob with scale

4 Adjustment element - hand knob with scale and keylock

With all adjustment elements:

clockwise rotation reduces flow

counter - clockwise rotation increases flow

5 Locknut HEX10

6 O-ring plate - supplied in delivery packet

7 Square ring 9.25x1.68 (4 pcs.) - supplied in delivery packet

8 Closing screw

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

2VS3-06A

2VS3-06B

2VS3-06C

152