–
Options:
only for valve with single actuator:
/A =
Actuator device mounted on side of port B (for DH and DK).
Actuator device mounted on side of port A of main body (for
DPH)
only for DPH:
/D = internal drain
/E = external pressure
/H = adjustable chokes for controlling the main spool shifting time
(meter-out to the pilot chambers of the main valve)
/H9= adjustable chokes for controlling the main spool shifting time
(meter-in to the pilot chambers of the main valve)
/R = pilot pressure generator on port P at 4 bar
/S = main spool stroke adjustment
Valve configuration, see sections 4 and
5
0 = free, without springs
1 = spring centered, without detent
3 = spring offset external position
5 = 2 external positions, with detent
7 = center and external positions
Pneumatic operated directional valves
ISO 4401 sizes 06, 10, 16, 25 and 32
Pneumatic operated directional valves are
spool type , three or four way, two or
three position, designed to operate in oil
hydraulic systems.
Available with single or double pneumatic
actuator with manual override.
Valve sizes and max flow:
DH-0 = size 06, flow up to 50 l/min
DK-1 = size 10, flow up to 160 l/min
DPH-2 = size 16, flow up to 300 l/min
DPH-4 = size 25, flow up to 700 l/min
DPH-6 = size 32, flow up to 1000 l/min
Max pressure:
350 bar for DH-0, DPH-2, DPH-4, DPH-6
315 bar for DK-1
Type of actuator:
8 = single actuator
9 = double actuator
Spool type, see sections 4 and
5
1 MODEL CODE
HYDRAULIC CHARACTERISTICS
E255
2
DH-09*
Directional control valve, size:
DH-0 = 06
DK-1 = 10
DPH-2 = 16
DPH-4 = 25
DPH-6 = 32
Series number
Recommended pneumatic pressure (1) [bar]
–
Min = 2 Max = 12
Recommended oil pressure on piloting line [bar]
Main body
Spool
Manual override
Pneumatic actuator
Pilot valve
DPH-48*
210
(1) filtered and lubricated air
DH-0
50
350
DK-1
160
315
DPH-2
300
DPH-4
700
350
250
null pressure
DPH-6
1000
Valve model
Max recommended flow [l/min]
Max pressure on port P, A, B (also X for DP) [bar]
Max pressure on port T [bar]
Max pressure on port L and Y [bar]
DH-0 8 1 3 A ** *//
Seals material, see section 3:
- =
NBR
PE = FKM
Table E255-3/E
Min = 4 Max = 250
The device /R generates an additional pressure drop, in
order to ensure the minimum pilot pressure, for correct
operation of the valves with internal pilot and fitted with
spools type 0, 0/1, 4, 4/8, 5. The device /R has to be fit-
ted when the pressure drop in the valve, verified on flow
versus pressure diagrams, is lower than the minimum
pilot pressure value.
3
MAIN CHARACTERISTICS, SEALS AND FLUIDS - for other fluids not included in below table, consult our technical office
4 CONFIGURATIONS and SPOOLS of valves type DH-*, DK-*
2
1
02
1
2
1
02
0
1
91
83
81
87
90
2
1
2
1
0
1
91
83
81
95
87/A
83/A
81/A
87
02
02
0
1
2
1
0/2
1/2
2/2
01 02
Configurations Spools
2
1
90
0
8
12
3
4567
01 02
01 02
01 02
01 02
Spools
Configurations
only for DH*
NOTES
- spools type 0 and 3 are also available as 0/1 and 3/1 with restricted oil passages in central position, from user ports to tank.
- spools type 1, 4 and 5 are also available as 1/1, 4/8 (only for DH-0) and 5/1. They are properly shaped to reduce water-hammer shocks during the swiching.
- spools type 1, 1/2, 3, 8 are available as 1P, 1/2P, 3P, 8P (only for DH-0) to limit valve internal leakages.
NOTE
For DPH-6 are available only spools: 0, 1, 1/2, 2, 3, 4, 5, 6, 7, 8
5
CONFIGURATIONS and SPOOLS of valves type DPH-*
0
8
12
3
4567
0/2
1/2
2/2
01 02
01 02
01 02
01 02
01 02
Configurations Spools Configurations Spools
Special shaped spools
- spools type 0 and 3 are also available as 0/1 and 3/1 with restricted oil passages in central position, from user ports to tank.
-
spools type 1, 4, and 5 are also available as 1/1, 4/8 and 5/1 are properly shaped to reduce water-hammer shocks during the switching.
Mineral oils
Hydraulic fluid
NBR, FKM
FKM
NBR
DIN 51524
ISO 12922
HL, HLP, HLPD, HVLP, HVLPD
HFDU, HFDR
HFC
Suitable seals type
Classification Ref. Standard
Flame resistant without water
Flame resistant with water
NBR seals (standard) = -20°C ÷ +80°C, with HFC hydraulic fluids = -20°C ÷ +50°C
Seals, recommended fluid temperature
FKM seals (/PE option) = -20°C ÷ +80°C
Recommended viscosity 15÷100 mm
2
/s - max allowed range 2.8 ÷ 500 mm
2
/s
Max fluid contamination level ISO4406 class 20/18/15 NAS1638 class 9, see also filter section at www.atos.com or KTF catalog
Assembly position / location
Subplate surface finishing Roughness index Ra 0,4 - flatness ratio 0,01/100 (ISO 1101)
Ambient temperature Standard execution = -30°C ÷ +70°C; /PE option = -20°C ÷ +70°C;
Any position for all valves except for type -*90 (without springs) that must be installed with horizontal
axis if operated by impulses.
10
83/A
2
0
81/A
10
87/A
2
1
95
Compliance
RoHS Directive 2011/65/EU as last update by 2015/65/EU
REACH Regulation (EC) n°1907/2006
DH-08**
DK-18**
7 INSTALLATION DIMENSIONS of VALVES type DH and DK [mm]
E255
Mass: 1,6 Kg
Mass: 4,2 Kg
Mass: 1,2 Kg
Pilot pressure port G1/8”
Manual override
Pilot pressure port G1/4”
V
Air bleed
Mass: 3,4 Kg
Mounting subplates: see tab. E010
ISO 4401: 2005
Mounting surface:
4401-03-02-0-05
Fastening bolts: 4 socket head screws M5x50 class 12.9
Tightening torque = 8 Nm
Diameter of ports A, B, P, T: Ø = 7,5 mm (max)
Seals: 4 OR 108
Mounting subplates: see tab. E025
ISO 4401: 2005
Mounting surface:
4401-05-04-0-05
Fastening bolts: 4 socket head screws M6x40 class 12.9
Tightening torque = 15 Nm
Diameter of ports A, B, P, T: Ø = 11,2 mm (max)
Seals: 5 OR 2050
DH-09**
DK-19**
6
Q/Δp DIAGRAMS
DH-0 See note and diagrams on table E010 relating the DH* valve from which DH-0* are derivated
DK-1 See note and diagrams on table E025 relating the DKE valve from which DK-1* are derivated
DPH-2 See note and diagrams on table E085 relating the DPH*-2 valve from which DP-2* are derivated
DPH-4 See note and diagrams on table E085 relating the DPH*-4 valve from which DP-4* are derivated
DPH-6 See note and diagrams on table E085 relating the DPH*-6 valve from which DP-6* are derivated
11/19
Mass: 18 Kg
Mass: 39,5 Kg
DPH-4
ISO 4401: 2005
Mounting surface:
4401-08-08-0-05
Fastening bolts:
6 socket head screws M12x60 class 12.9
Tightening torque = 125 Nm
Diameter of ports A, B, P, T: Ø = 24
Diameter of ports X,Y: Ø = 7 mm
Seals: 4 OR 4112, 2 OR 3056
Stroke adjustment
device for option /S
DPH-6
ISO 4401: 2005
Mounting surface:
4401-10-09-0-05
Fastening bolts:
6 socket head screws M20x80 class 12.9
Tightening torque = 600 Nm
Diameter of ports A, B, P, T: Ø = 34 mm
Diameter of ports X,Y: Ø = 7 mm
Seals: 4 OR 144, 2 OR 3056
Stroke adjustment
device for option /S
Only for option /H
Only for option /H
DPH-2
ISO 4401: 2005
Mounting surface:
4401-07-07-0-05
Fastening bolts:
4 socket head screws M10x50 class 12.9
Tightening torque = 70 Nm
2 socket head screws M6x45 class 12.9
Tightening torque = 15 Nm
Diameter of ports A, B, P, T : Ø = 20
Diameter of ports X,Y: Ø = 7 mm
Seals: 4 OR 130, 2 OR 2043
Stroke adjustment
device for option /S
Mass: 11,5 Kg
Only for option /H
8 INSTALLATION DIMENSIONS of VALVES type DP [mm]
85 max
38
38
144
220
92
97
40
49
186
109 max
19149.5 49.5
290
118
126
40 49
215
132 max
27560 60
395
200
167.5
256.5
40
49