DIRECTIONAL CONTROL VALVES

OTHER OPERATOR CETOP 3/NG6

INTRODUCTION
The ARON directional control valves NG6 are designed for subplate mounting with an
interface in accordance with with UNI ISO 4401 - 03 - 02 - 0 - 94 standard (ex CETOP
R 35 H 4.2-4-03), and can be used in all fields on account of their high flow rate and pressure
capacities combined with compact overall dimensions.
1
The use of solenoids with wet armatures allows a very practical, safe construction completely
dispensing with dynamic seals; the solenoid tube is screwed directly onto the valve chest whilst
the coil is kept in position by means of a lock nut.
OTHER OPERATOR The special, precise construction of the ports and the improvement of the spools enables
relatively high flow rates to be accommodated with a minimal pressure drop (Δp).
STANDARD SPOOLS CH. I PAGE 10 The centre position is obtained by means of calibrated length springs which reposition the
AD.3.P... CH. I PAGE 16 spool in the centre or end of travel position once the action of the impulse is over.
AD.3.O... CH. I PAGE 16 The valves are designed for use with DIN 51524 standard hydraulic mineral oils and it is
AD.3.M... CH. I PAGE 17 recommended that filters should be fitted to ensure a maximum contamination level of class
10 in accordance with NAS 1638, ß25≥75.
AD.3.D... CH. I PAGE 17
ORDERING CODE TAB.1
MOUNTING
AD Directional valve STANDARD

3 CETOP 3/NG06 C

* Type of operator D
P = Pneumatic
O = Oleodynamic E
M = Mechanically
D = Direct mechanically F
(For other operator see
past pages) SPECIALS (WITH PRICE INCREASING)

G
** Spool (see page I•10)
H
* Mounting type (tab.1)

z No voltage
I

** Variants: L
00 = no variant
V1 = Viton M
H1 = Marine version (for AD3P only)
DI(*) = Internal draining (for AD3O only) • In case of mounting D
with detent a maximum supply
2 Serial No. time of 2 sec is needed (only
for AC coils).

(*) The DI variant is recommended in the environments characterised by

the presence of dust or any type of contamination.

PRESSURE DROPS
1 2
Spool Connections Spool Connections
3 type P→A P→B A→T B→T P→T type P→A P→B A→T B→T P→T
4
01 5 5 5 5 11 4 6
5 02 6 6 6 6 5 22 4 6
03 5 5 6 6 12 5 6
Δp (bar)

6
04 1 1 2 2 4 13 5 6 6
05 5 5 5 5 14 2 1 1 1 2
06 5 5 6 5 28 1 2 1 1 2
66 5 5 5 6 15 - 19 4 4 6 6
07 4 6 16 5 5 4 4
08 6 6 17 - 21 1 3
09 5 5 18 5 5
Q (l/min) 10 5 5 5 5 20 4 4 4 4
Curve No. Curve No.
The diagram at the side shows the pressure drop curves for spools during normal usage. The fluid used is a mineral oil with a viscosity of
46 mm2/s at 40°C; the tests have been carried out at a fluid temperature of 40°C. For higher flow rates than those in the diagram, the losses will
be those expressed by the following formula:
Δp1 = Δp x (Q1/Q)2
where Δp will be the value for the losses for a specific flow rate Q which can be obtained from the diagram, Δp1 will be the value of the losses
for the flow rate Q1 that is used.

File: AD3002_E I • 15 05/2001/e

 AD.3.P... PNEUMATIC OPERATION TYPE VALVES CETOP 3/NG6
Max. pressure ports P/A/B 320 bar • Possible mountings:
Max. pressure port T 160 bar C/D/E/F/G/H/I L/M
Max. flow 60 l/min

1 Minimum operating pressure

Maximum operating pressure
Fluid viscosity
2 + [0.027 x (pt*)] bar - see note
20 bar
10 ÷ 500 mm2/s
Ordering code see
page before

Fluid temperature -25°C ÷ 75°C (pt*)= pressure at port T

Ambient temperature -25°C ÷ 60°C
Max. contamination level
class 10 in accordance with NAS 1638 with filter ß25≥75
Weight single pilot 1,2 Kg
Weight twin pilot 1,8 Kg
OVERALL DIMENSIONS

Fixing screws UNI 5931 M5x30

with material specifications min. 8.8
Tightening torque 5 Nm / 0.5 Kgm

Support plane
specifications

IAD3P - 02/2000/e

AD.3.O... OLEODYNAMIC OPERATION TYPE VALVES CETOP 3/NG6

Max. pressure ports P/A/B 320 bar • Possible mountings:
Max. pressure port T 160 bar C/D/E/F/G/H/I L/M
Max. flow 60 l/min
Minimum operating pressure 15 + [0.1 x (pt*)] bar - see note Ordering code see
Maximum operating pressure 250 bar page before
Fluid viscosity 10 ÷ 500 mm2/s
Fluid temperature 0°C ÷ 75°C
(pt*)= pressure at port T
Ambient temperature -25°C ÷ 60°C
Max. contamination level
class 10 in accordance with NAS 1638 with filter ß25≥75
Weight single pilot 1,5 Kg
Weight twin pilot 2,3 Kg
The DI variant is recommended in the envi-
ronments characterised by the presence of
Further technical specifications (for DI variant only)
dust or any type of contamination.
Minimum operating pressure [10 + (pt*)] bar - see note
Maximum operating pressure 250 bar
Max. piloting leakage 1 l/min
OVERALL DIMENSIONS

E = Manual override

Fixing screws UNI 5931 M5x30

with material specifications min. 8.8
Tightening torque 5 Nm / 0.5 Kgm

Support plane
specifications

IAD3O - 03/2000/e

File: AD3P002_E I • 16 06/2000/e

 TWO SOLENOIDS, SPRING CENTRED “C” MOUNTING DIRECTIONAL CONTROL VALVES
Spool
type
Covering Transient position
STANDARD SPOOLS CETOP 3/NG6
01 +
NOTE
02 - (*) Spool with price increasing

1 03 + • With spools 15 / 16 / 17 only mounting E / F are possible

• 16 / 19 / 20 / 21 spool not planned for AD.3.E...J*
04* -
• For lever operated the spools used are different.
44* - Available spools for this kind of valve are: 01 / 02 / 03 / 04 / 05 / 06 / 66 / 07
22 / 13 / 15 / 16 / 17
05 +

66 + ONE SOLENOID, SIDE B “F” MOUNTING

Spool Covering Transient position
06 + type

07* + 01 +

08* + 02 -

09* + 03 +

10* + 04* -

22* + 44* -

11* + 05 +

12* + 66 +

13* + 06 +

14* - 08* +

28* - 09* +

10* +

22* +
ONE SOLENOID, SIDE A “E” MOUNTING
Spool Covering Transient position 12* +
type

13* +
01 +
07* +
02 -
15 -
03 +
16 +
04* -
17 +
44* -
14* -
05 +
28* -
66 +

06 +

08* +
TWO SOLENOIDS “D” MOUNTING
10* + Spool Covering Transient position
type

12* +
19* -
15 -
20* +
16 +
21* +
17 +

14* -

28* -

File: TCRS003_E I • 10 05/2000/e