139
D1WWEI01A
Logic valves
1
2
3
1
2
3
Technical specications and diagrams are measured with mineral oil of 46 cSt viscosity at 40°C (104°F) temperature.
LA10QA LA16QA
Nominal ow
80 l/min
(21 US gpm) 190 l/min (50 US gpm)
Max. pressure
350 bar
(5100 psi)
Opening pressure
xed setting: 1, 5, 10 bar (14.5, 72.5, 145 psi)
adjustable setting: from 8 to 15 bar (116 to 218 psi)
Oil leakage
at 210 bar
(3050 psi) 80 cm
3
/min
(4.88 in
3
/min)
230 cm
3
/min
(14.03 in
3
/min)
Fluid mineral based oil
Viscosity 10-200 cSt
Max level of contamination 20/18/14 ISO4406
Fluid temperature
with NBR seals
with FPM seals
from -20°C
(-4°F) to 80°C (176°F)
from -20°C (-4°F) to 100°C (212°F)
Environmental temp. for working
conditions
from -20°C
(-4°F) to 50°C (122°F)
Cavity SAE 10/3Q SAE 16/3Q
Weight
0.15 kg
(0.33 lb) 0.45 kg (0.99 lb)
NOTE - For different conditions, please contact Walvoil Sales Dpt.
• Pilot to close conguration
• Fixed or adjustable Stand-by
• SAE10 and SAE16 cavities
LA..QA type
logic element - 3 way
2
1
3
Valve type
A B C (max)
D E F
mm
in
mm in mm in Nm lbft Nm lbft
LA10QA 47.6
1.87
20
0.79
21
0.83
27 70
52
13 9.8
7.2
3
LA16QA 35.1
1.38
56.9
2.24
24
0.94
36 100
74
13 9.8
7.2
3
A
A
B
B
C
LA16QA/0...
LA16QA/0R..
D
E
F
D
1
2
3
C
A
D E
F
B
LA10QA/0R..
1
2
3
A B
LA10QA/0...
D
140
D1WWEI01A
Logic valves
0
4
8
12
16
20
0 40 80 120 160 200
(l/min)
(bar)
(psi)
(US gpm)
0
10 20 30 40 50
0
50
100
150
200
250
Flow
Pressure
0 10 20 30 40 50 60 70 80
(l/min)
(bar)
0 4 8 12 16 20
(US gpm)
(psi)
0
25
50
75
100
125
Flow
Pressure
0
2.5
5
7.5
10
1
5
LA 10QA/0 C 0 B SB=12bar
2 3
Ordering codes and description composition
______________________________________________________
1 Cartridge
TYPE CODE DESCRIPTION
SAE cavity 10/3Q
LA10QA/0B0B
0LA10Q002003 Fixed setting, 5 bar (72.5 psi)
LA10QA/0C0B
0LA10Q002001 Fixed setting, 10 bar (145 psi)
LA10QA/0R0B SB=12bar
0LA10Q002002 Adjustable setting,
std setting 12 bar
(174 psi)
SAE cavity 16/3Q
LA16QA/0C0B
0LA16Q002000 Fixed setting, 10 bar (145 psi)
LA16QA/0R0B SB=12bar
0LA16Q002001 Adjustable setting,
std setting 12 bar
(174 psi)
2 Stand by
Setting is referred to 1 l/min (0.26 US gpm) ow
TYPE DESCRIPTION
A Fixed setting: 1 bar
(14.5 psi)
B Fixed setting: 5 bar (72.5 psi)
C Fixed setting: 10 bar (145 psi)
R Adjustable setting: from 8 to 15 bar (116 to 218 psi)
3 Lead sealing
TYPE DESCRIPTION
0 Without sealing
X With sealing: for valves with adjustable stand-by only
4 Seals
TYPE DESCRIPTION
B NBR (Buna) o-ring seals, std conguration
V FPM (Viton) o-ring seals, contact Sales Dept.
5 Stand-by setting
To be specied only with adjustable stand-by valve
6 Valve body
TYPE CODE DESCRIPTION
SAE 10/3Q-G 1/2 3CC1032D21 Steel body for cavity 08 valve,
G 1/2
standard thread
SAE 16/3Q-G 3/4 3CC1632E21 Steel body for cavity 16 valve,
G 3/4
standard thread
For aluminium bodies or different threading see from page 217
Rating diagrams
____________________________________________________________________________________________
LA10QA pressure drop
(fully open)
LA16QA pressure drop
(fully open)
LA..QA type
1
4
2
3
5
6
4
Logic valves - 3 way