Atos  > Proportional valves
technical information 


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User's guidelines 
basics for proportional electrohydraulics 



basics for digital electrohydraulics 



Commissioning 
commissioning and trouble shooting 



proportional pressure valves 
ISO 4401



RZMOA* 010 
proportional relief valves, direct operated, without integral pressure transducer, with optional integral electronic driver 
06

4


RZMOTERS
(AERS) 010 
proportional relief valves, direct operated, with integral or remote pressure transducer and integral digital electronic driver 
06

4


RZGOA* 010 
proportional reducing valves, direct operated, without integral pressure transducer, with optional integral electronic driver 
06

12


RZGOTERS
(AERS) 010 
proportional reducing valves, direct operated, with integral or remote pressure transducer and integral digital electronic driver 
06

12


AGMZOA* 
proportional relief valves, two stage, without integral pressure transducer, with optional integral electronic driver 
10, 20, 32

200  400  600


AGMZOTERS
(AERS) 
proportional relief valves, two stage, with integral or remote pressure transducer and integral digital electronic driver 
10, 20, 32

200  400  600


AGRCZOA* 
proportional reducing valves, two stage, without integral pressure transducer with optional integral electronic driver 
10, 20,

160  300


AGRCZOTERS (AERS) 
proportional reducing valves, two stage, with integral or remote pressure transducer and integral digital electronic driver 
10, 20

160  300


RZMOA* 030 
proportional relief valves, pilot operated, subplate mounting, without pressure transducer, with optional integral electronic driver 
06

40


HZMOA* 030 
as above but for modular mounting 
RZMOTERS
(AERS) 030 
proportional relief valves, pilot operated, subplate mounting, with integral or remote pressure transducer and integral digital electronic driver 
06

40


RZGOA* 033 
proportional reducing valves, pilot operated, subplate mounting, without integral pressure transducer with optional integral electronic driver 
06

40


HZGO 031
KZGO 033 
as above but for modular mounting 
06, 10

40  100

RZGOTERS
(AERS) 033 
proportional reducing valves, pilot operated, subplate mounting, with or remote pressure transducer and integral digital electronic driver

106

40


proportional directional valves 
ISO 4401

at Δp = 70 bar


DHZOA*
DKZORA* 
proportional directional valves, direct operated, without integral transducer, with optional integral electronic driver 
06, 10

70  160


DHZOT*
DKZORT* 
as above but with integral position tranducer 
06, 10

70  170


DPZOA* 1,2,3 
two stage proportional valves without position transducer, with optional integral electronic driver 
10, 16, 25

at Δp = 10 bar
100  200  390


DPZOT* 1,2,3 
as above but with position transducer on main stage 

DPZOL* 1,2,3 
as above but high performances with 2 integral position transducers on pilot and main stage 

DLHZOT*
DLKZORT* 
servoproportionals, direct operated, spool  sleeve precise operation, with position transducer & optional integral electronics, high response 
06, 10

40  100


proportional cartridges 
ISO 7368

at Δp = 5 bar


LICZOA* 
compensator 
proportional pressure cartridges
without integral pressure transducer & optional integral electronic driver 
16, 25, 32,
40, 50

200 ÷ 2000


LIMZOA* 
relief 
16 ÷ 80

200 ÷ 4500

LIRZOA* 
reducing 
16 ÷ 40

160 ÷ 800

LICZOTERS
(AERS) 
compensator 
proportional pressure cartridges
with integral or remote pressure transducer & integral digital electronic driver 
16, 25, 32,
40, 50

200 ÷ 2000


LIMZOTERS
(AERS) 
relief 
16 ÷ 80

200 ÷ 4500

LIRZOTERS
(AERS) 
reducing 
16 ÷ 40

160 ÷ 800

LEQZOA 
proportional throttle cartridges, 2way, without integral transducer, with optional integral electronic driver 
16, 25, 32
not ISO standard

140  230  350


LIQZOT 
proportional throttle cartridges, 2way, with integral main stage’s position transducer and optional electronic driver 
16, 25, 32,
40, 50

250 ÷ 2000


LIQZOL**2 
high dynamic 2way, proportional throttle cartridges, with 2 integral position transducers and optional electronics 
16 ÷ 100

250 ÷ 7200


LIQZOL**3 
high dynamic 3way, proportional throttle cartridges, with 2 integral position transducers and optional electronics 
25 ÷ 80

135 ÷ 2100


proportional flow valves 



QVHZOA*
QVKZORA* 
proportional flow control valves, 2 or 3way, pressure compensated, without position transducer, ISO 4401 
06
10

45
90


QVHZOT*
QVKZORT* 
proportional flow control valves, 2 or 3way, pressure compensated, with position transducer, ISO 4401 
06
10

45
90


QVHMZO
QVKMZOR 
proportional valves for pressure/flow independent control, 3way pressure compensated, ISO 4401 
06
10

45
90


QVMZO 
proportional valves for pressure/flow indipendent control, double stage, 3way pressure compensated 
20, 25 ISO
1 1/4” SAE

170  280
500


exproof proportionals 



Exproof proportionals with separate drivers  Atex and Rostechnadzor certification 
see sections 15÷25


Exproof proportionals with separate drivers  C UL US certification 
see sections 15÷25


Exproof proportionals with integral digital drivers  Atex certification 




