05/2001/eFile: AD3002_E I • 15
1
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.
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.
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 (∆p).
The centre position is obtained by means of calibrated length springs which reposition the
spool in the centre or end of travel position once the action of the impulse is over.
The valves are designed for use with DIN 51524 standard hydraulic mineral oils and it is
recommended that filters should be fitted to ensure a maximum contamination level of class
10 in accordance with NAS 1638, ß
25
≥75.
Spool
Connections
type
P →A P →B A →T B →T P →T
01 5 5 5 5
02 6 6 6 6 5
03 5 5 6 6
04 1 1 2 2 4
05 5 5 5 5
06 5 5 6 5
66 5 5 5 6
07 4 6
08 6 6
09 5 5
10 5 5 5 5
Curve No.
Spool
Connections
type
P →A P →B A →T B →T P →T
11 4 6
22 4 6
12 5 6
13 5 6 6
14 2 1 1 1 2
28 1 2 1 1 2
15 - 19 4 4 6 6
16 5 5 4 4
17 - 21 1 3
18 5 5
20 4 4 4 4
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 mm
2
/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:
∆p1 = ∆p x (Q1/Q)
2
where ∆p will be the value for the losses for a specific flow rate Q which can be obtained from the diagram, ∆p1 will be the value of the losses
for the flow rate Q1 that is used.
TAB.1
MOUNTING
ORDERING CODE
• In case of mounting D
with detent a maximum sup-
ply time of 2 sec is needed
(only for AC coils).
AD Directional valve
3 CETOP 3/NG06
* Type of operator
P = Pneumatic
O = Oleodynamic
M = Mechanically
D = Direct mechanically
(For other operator see
past pages)
** Spool (see page I•10)
* Mounting type (tab.1)
z No voltage
** Variants:
00 = no variant
V1 = Viton
H1 = Marine version (for AD3P only)
DI(*) = Internal draining (for AD3O only)
2 Serial No.
OTHER OPERATOR
STANDARD SPOOLS CH. I PAGE 10
AD.3.P... CH. I PAGE 16
AD.3.O... CH. I PAGE 16
AD.3.M... CH. I PAGE 17
AD.3.D... CH. I PAGE 17
STANDARD
C
D
E
F
S
PECIALS (WITH PRICE INCREASING)
G
H
I
L
M
∆p (bar)
Q (l/min)
PRESSURE DROPS
1 2
3
4
5
6
(*) The DI variant is recommended in the environments characterised by
the presence of dust or any type of contamination.
File: AD3P002_E 06/2000/eI • 16
1
OVERALL DIMENSIONS
AD.3.P... PNEUMATIC OPERATION TYPE VALVES CETOP 3/NG6
Max. pressure ports P/A/B 320 bar
Max. pressure port T 160 bar
Max. flow 60 l/min
Minimum operating pressure 2 + [0.027 x (pt*)] bar - see note
Maximum operating pressure 20 bar
Fluid viscosity 10 ÷ 500 mm
2
/s
Fluid temperature -25°C ÷ 75°C
Ambient temperature -25°C ÷ 60°C
Max. contamination level class 10 in accordance with NAS 1638
with filter ß
25
≥75
Weight single pilot 1,2 Kg
Weight twin pilot 1,8 Kg
• Possible mountings:
C / D / E / F / G / H / I L / M
Ordering code see
page before
(pt*) = pressure at port T
Fixing screws UNI 5931 M5x30
with material specifications min. 8.8
Tightening torque 5 Nm / 0.5 Kgm
Support plane
specifications
AD.3.O...
OLEODYNAMIC OPERATION TYPE VALVES CETOP 3/NG6
• Possible mountings:
C / D / E / F / G / H / I L / M
Ordering code see
page before
(pt*) = pressure at port T
E = Manual override
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
IAD3O - 03/2000/e
Max. pressure ports P/A/B 320 bar
Max. pressure port T 160 bar
Max. flow 60 l/min
Minimum operating pressure 15 + [0.1 x (pt*)] bar - see note
Maximum operating pressure 250 bar
Fluid viscosity 10 ÷ 500 mm
2
/s
Fluid temperature 0°C ÷ 75°C
Ambient temperature -25°C ÷ 60°C
Max. contamination level class 10 in accordance with NAS 1638
with filter ß
25
≥75
Weight single pilot 1,5 Kg
Weight twin pilot 2,3 Kg
Further technical specifications (for DI variant only)
Minimum operating pressure [10 + (pt*)] bar - see note
Maximum operating pressure 250 bar
Max. piloting leakage 1 l/min
The DI variant is recommended in the
environments characterised by the pres-
ence of dust or any type of contamination.
