1
Functional Description
The Roller cam-operated directional control valves are
used mainly to control start, stop and direction of fluid.
The valves consist of housing (1) with control spool (2)
with two centering springs (6) and the actuating section
(3). The actuating section consists either of the roller-pin
(4) and of one return spring (5). The directional control
valves are being manufactured as two-position valves
(see table with functional symbols).
The valve housing (1) is phosphate coated.
q
4/2 -way spool type directional control valves
q
Roller cam-operated
q
Actuating section can be rotated 90°
q
Installation dimensions to ISO 4401 /
CETOP RP121-H / DIN 24 340
HA 4038
12/2007
Roller cam-operated Directional
Control Valves
RPK1-06
Size 06 (D 03) · ... 350 bar (5076 PSI) · ... 80 l/min (21 GPM)
Replaces
HA 4038 12/2006
A B
P
T
A B
P T
2
HA 4038
RPK1-06 -
Number of valve positions
two positions
Valve size
Directional Control Valves
Roller cam-operated
Spool symbols
see the table spool symbols
Seals
no designation NBR
V FPM (Viton)
Ordering Code
Valve size US (mm) 06 (D 03)
Maximum flow l/min (GPM) 80 (21)
Maximum operating pressure at ports P, A, B bar (PSI) 350 (5076)
Maximum operating pressure at port T bar (PSI) 20 (290)
Pressure drop bar (PSI) see Dp -Q characteristics
Hydraulic fluid Hydraulic oils of power classes (HL, HLP) to DIN 51524
Fluid temperature range - NBR °C (°F) -30 ... +100 (-22 ... +212)
Fluid temperature range - Viton °C (°F) -20 ... +120 (-4 ... +248)
Viscosity range mm
2
/s (SUS) 20 ... 400 (98 ... 1840)
Maximum degree of fluid contamination Class 21/18/15 to ISO 4406 ( 1999).
Service life cycles 10
6
Weight kg (lbs) 1,6 (3.53)
Mounting position any
Type Symbol Crossover
Type Symbol Crossover
Technical Data
for 0 bar(0 PSI ) pressure in T port for 20 bar (290 PSI) pressure in T port
Operating press. Stroke begg. Oper. stroke Total stroke Stroke begg. Oper. stroke Total stroke
100 bar(1450 PSI) 35 N (8 lbs) 135 N (30 lbs) 195 N (44 lbs) 60 N (13 lbs) 160 N (36 lbs) 220 N (49 lbs)
200 bar(2901 PSI) 35 N (8 lbs) 135 N (30 lbs) 195 N (44 lbs) 60 N (13 lbs) 160 N (36 lbs) 220 N (49 lbs)
300 barI(4351 PS) 35 N (8 lbs) 135 N (30 lbs) 195 N (44 lbs) 60 N (13 lbs) 160 N (36 lbs) 220 N (49 lbs)
Operating Power
Spool Symbols
3
HA 4038
p-Q Characteristic Measured at n = 32 mm
2
/s (156 SUS)
Operating limits for maximum hydraulic power transferred by the directional valve. For respective spool type - see spool
symbols.
(2.64) (7.93) (13.21) (18.49) (23.77)
(725)
(1450)
(2176)
(2901)
(3626)
(4351)
(5076)
Operating pressure p [bar(PSI)]
Flow Q [L/min(GPM)]
Y11 1
Y51 1
R11 2
Z11 3
Z51 3
C11 4
C51 4
R21 5
H11 6
H51 6
Pressure drop Dp [bar(PSI)]
Flow Q [l/min(GPM)
P-A P-B A-T B-T P-T
Z11 2 2 3 3
C11 5 5 5 6 3
H11 2 2 2 2 3
R11 2 2 3 3
R21 2 2 3 3
A51 2 2
P51 1 3
Y51 2 2
C51 2 3 4
Z51 2 3
H51 2 3
X11 2 2 3 3
Valve Dimensions Dimensions in millimeters and inches
32,5 1.28( )
45,5 1.79( )
31
7 0.27( ) ( )1.22
25,9( )1.02
15,5 0.61( )
5,1( )0.20
0,75 0.03( )
3 0.12( )
A
P
T
B
40,5 1.59( )
33 1.3( )
12,5 0.49( )
30,2 1.19( )
21,5 0.85( )
12,7 0.5( )
Dp-Q Characteristic Measured at n = 32 mm
2
/s (156 SUS)
Pressure drop Dp related to flow rate.
49,3 1.94( )
24
0.94( )
37,3 1.47( )
12.40.49()
1,4 0.06( )
9.5 0.37( )
69,7 2.74 68 2.68( ) ( )
8 0.32( )
5.3 0.21( )
2,5(0.10)
145,7(5.74)
11(0.43)
2,5(0.10)
30° MAX
22 0.87( )
8(0.32)
4
HA 4038
Valve Dimensions Dimensions in millimeters and inches
For applications outside the given parameters, please consult us.
Other for spool symbols on request.
The packing foil is recyclable.
The protective plate can be returned to manufacturer.
Mounting screws M5 x 45 DIN 912-10.9 or bolts must be ordered separately.
The screws tightening torque is 8.9 Nm (6.6 ft-Ibs).
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.
Seal kit
Type Dimensions, quantity Order number
O-ring - NBR90 17 x 1.8 (2 pcs.)
20980900
Square ring - NBR70 9.25 x 1.68 (4 pcs.)
O-ring - NBR70 3.68 x 1.78 (1 pc.)
Wiper ring WSW 000180 ASW (1 pc.)
Bolt kit (for studs see HA 0030)
Dimensions, quantity Bolt torque Order number
M5 x 45 DIN 912-10.9 (4 pcs.) 6.6 ft-lbs (8.9 Nm) 15845100
Spare Parts Dimensions in millimeters
4 1 2
3
1 Actuating section
2 Cam
3 Name plate
4 Square ring (4 pcs.) 9,25 x 1,68
supplied with valve
Caution!
Subject to alteration without notice!
ARGO-HYTOS s.r.o. CZ - 543 15 Vrchlabí
Tel.: +420-499-403 111
E-mail: info.cz@argo-hytos.com
www.argo-hytos.com
mounting holes
Required surface finish of
interface
