1
st
edition EX72.01
www.hydrocontrol-inc.com
EX72
LOAD SENSING vALvE
TECHNICAL CATALOGUE
This catalogue shows the product in the most standard congurations.
Please contact our Sales Dpt. for more detailed information or special requests.

All specications of this catalogue refer to the standard product at this date.
Walvoil, oriented to a continuous improvement, reserves the right to
discontinue, modify or revise the specications, without notice.



721
Walvoil nel mondo - 
Sede principale, Filiali e Ufci di rappresentanza

Walvoil S.p.A. - Headquarters
Via Adige, 13/D . 42124 Reggio Emilia . Italy
Phone +39 0522 932411 . info@walvoil.com - www.walvoil.com
Business Unit Hydrocontrol
Via San Giovanni, 481 . 40060 Osteria Grande
Castel S. Pietro Terme . Bologna . Italy
Phone +39 051 6959411
Galtech Site
Via Portella della Ginestra, 10 . 42025 Cavriago
Zona Industriale Corte Tegge . Reggio Emilia . Italy
Phone +39 0522 932411
A
ustrAlAsiA
Walvoil Fluid Power Australasia Pty Ltd
13 Vanessa Way . Delahey VIC 3037 . Melbourne . Australia
TEL. 0061 458 918 750 . australasia@walvoil.com
B
rAsile . BrAzil
Interpump Hydraulics Brasil Ltda – Walvoil Division
Gilberto de Zorzi, 525 . Forqueta Caxias do Sul (RS)
TEL. 0055 54 3223 2373 . infobrasil@walvoil.com
C
AnAdA
Galtech Canada Inc.
3100, Jacob Jordan . Terrebonne . Qc J6X 4J6 . Canada
Phone +1 450 477 1076 Ext:225 . info@galtechcanada.com
C
inA . ChinA
Walvoil Fluid Power (Shanghai) Company Limited
24, Lane 129, Dieqiao Road . Pu Dong . Kanqiao Industrial Zone Shanghai (201319)
TEL. 0086 21 60979800 . info@walvoil.com.cn
Guangzhou Bushi Hydraulic Technology Ltd
Shangwei Shaheshe, Yuehu Village . Xiancun, Xintang Town . Zengcheng City
511335 Guangzhou . Guangdong Province China
Phone +86 021 52380695 . fareast@hydrocontrol-inc.com
C
oreA . KoreA
Walvoil Fluid Power Korea Ltd. - SOUTH KOREA
80-15, Oseongsandan 1Ro, Oseong-Myun, Pyungtaek, Kyungki . Korea 451-872
TEL. +82 31 682 6030 . info@walvoil.co.kr
F
rAnCiA . FrAnCe
Walvoil Fluid Power France
362 rue de Bretagne . 44540 Vritz
TEL. 0033 2 41 94 41 06 . france@walvoil.com
indiA
HC Hydraulic Technology(P) LTD
A5(B) Ngef Ancillary Indl. Estate . Whiteeld Road
Mahadevpura (Po) . Bangalore 560048 . India
Phone +91 080 40454707 . info@hydrocontrol-india.com
Walvoil Fluid Power (India) PVT. LTD.
No 23, Doddanakundi Industrial Area Mahadevapura Post Behind Graphite India
Bangalore 560 048
TEL. 0091 80 41842900 . info@walvoil.co.in
u.s.A.
Hydrocontrol Inc.
1109, Technology Drive . Red Wing . MN 55066 . U.S.A.
Phone +1 651 212 6400 . usa@hydrocontrol-inc.com
Walvoil Fluid Power Corporation
4111 North Garnett Tulsa, OK 74116, USA
TEL. 001 918 858 7100 . info@walvoiluidpower.com


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
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


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
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         
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               
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
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    
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

    

    
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
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
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    
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
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
  
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  
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              
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       
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 
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 
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M
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b2
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  
    
  

                


  

3
2
1
P
T
B
A
B
A







    
  

  
  
  
  
  
  
  













Tie rod
Nut
Washer
Tie rod kit



   
        
       
        


M14 N°4 fixtures
19
26
(X) 232
17642
17
T1
19136
195.5
86.7
21.4
164
182
152.3
72
46.5
LS
185
46.5
90
72
87
139.5
1236242
131 164255
341.2
45 81 72 64
(Y) 297
118
250
17.5
46
78
T
P
A1 A2
B1
B2





M14 N°4 fixtures
19
26
42
17
176
(X) 232
T1
182
2119
87
LS
46.5
72
46.5
185
72
90
87
115
T
P
A1
A2
B1
B2
72
334.1
(Y) 297
814517.5
42
95
62 123
255 100
118
250
64
85 85
b1
b2
a1
a2
   
       
       
        







0
5
10
15
20
25
30
pressure [bar]
0 50 100 150 200 250 300 350 400 450 500
flow [l/m]


0
50
100
150
200
250
300
350
pressure [bar]
flow [l/m]
0 50 100 150 200 250 300 350 400 450 500

D
0
50
100
150
200
250
300
Flow [l/min]
12 14 16 18 20 22 24 26
Pressure [bar]
350
400
450
Spool 340340
Spool 280280
Spool 200200
Spool 160160






D
0
160
120
80
40
200
240
280
320
360
400
flow [l/min]
0-1-2-3-4-5-6-7
+1 +2 +3 +4 +5 +6 +7
stroke [mm]
700 800 900 1000 1200
12V current [mA]
350 400 450 500
1100
550 600
24V current [mA]
7 9,6 12,2 14,8 17,4 20,1
Hydraulic pilot [bar]
stroke [mm]
12V current [mA]
24V current [mA]
Hydraulic pilot [bar]
Spool 340340
Spool 280280
Spool 200200
Spool 160160
1200 1100 1000 900 700
600 550 500 450
800
400 350
20,1 17,4 14,8 12,2 9,6
7
-8-9
+8 +9
-10
-11
+10
+11






 
  
 
  
  
  
  
      
P
T
1
3
4
5
2

   
  
 

 
 

 
 

 
  













   


















T P


T P
T P
T P
T P
V4B
V3B
B
V11C
V10C
V1A
V2A
Plug kit
code 430095008
A
C


    


   



       










V4B
B
V10C
V1A
Plug kit
code 430095008
A
C
 

 
 

 


 

 




 

 


V3B
B
V10C
V1A
Plug kit
code 430095008
A
C
V4B
B
V11C
V10C
V2A
A
C

 

 

 

 






C
V11C
Coil














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 
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    
  
  
  
  
  
3
5
1
2
4
B
A
   
 

 
 

 
 

 
 
 
 
 
 
 
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

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




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
  


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T
P A B
T
P A B
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Spool
Spool end


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
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     
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
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    
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  
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  
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  
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T
P A B
T
P A B
T
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 
 


 











Spool actuation - Side A
Spool return action - Side B

   























250
105
105
460
28.5
87.5
28.5
87.5
250
100
100
450
33.5
87.5
33.5
87.5
250
129
129
508
28.5
87.5
28.5
87.5

 
 






   



















139.5
94.7
143.5
94.7
139.5
65.7
163.5
65.7






   











53
112
136
53










  

   
   
    
    
    
    
  
  
  

Solenoid







 



















    


 
























































b
A B a
B A




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

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








b
A B a
Local LS
relief valve
B A
Local LS
relief valve








 










 



 
 
 
Plug 430095002
B
A
B
A
Local LS relief valve











   

   




 
 
 













   

   




 
 
 



















  
  
  
  
  
   
 

 
 

 
 

 




 
 
 
 









    
3
1
2
4
5
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




   
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






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

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





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
   

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

















LS drain
B A
T1 (drain line)
LS drain
B A
T1 (drain line)
Local LS
relief valve
LS drain
LS drain


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
     




 
  
   
  
  
  


  
  
  
  
  
  

 

 

 

 
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 
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 
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 

 

P
T
1
3
4
5
2
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



     

  
  
  
  
  

  
  
  
  
  



  
  
  
  
  
  
  
  
  
  
5
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A




     
   
   

  
  
  
  
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 



 

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 
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
 

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 

 
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 

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 
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 
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 

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 
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 
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
     




 
 
  
   
  

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
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 
 
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 
 

 

 
 

 

 

 
 


 

 





Plug - Hex.30
60/65 Nm
Plug - Hex. 6
30 Nm
Plug - Hex.5
20 Nm
Valve - Hex.30
60/65 Nm
Plug - Hex.36
120 Nm
Nut - Hex.19
15/20 Nm
Valve - Hex.24
40/45 Nm
Plug - Hex.10
120 Nm
Plug - Hex.10
120 Nm
Valve - Hex.30
60/65 Nm









Plug - Hex.10
80 Nm
Screw - Hex.6
25 Nm
Plug - Hex.10
80 Nm
Valve - Hex.32
80 Nm
Nut - Hex.19
20 Nm
Plug - Hex.32
80 Nm




Plug - Hex.10
80 Nm
Screw - Hex.6
25 Nm
Plug - Hex.10
80 Nm
Valve - Hex.32
80 Nm
Nut - Hex.19
20 Nm
Plug - Hex.32
80 Nm
Plug - Hex.6
30 Nm








  

  

       

       















     

























          
         
           
           
    

     

















       
     
       
       
  

   
                
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C
A
B
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

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
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00 08075 00
44 612
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

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             
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
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
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edition EX72.01

EX72


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