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MA-DKZOR-T Hydraulic Proportional Direction Valve High Frequency MA-DHZO-T 06 and 10
DHZO-T*; DKZOR-T*
High performance hydraulic proportional valves
with position transducer and positive
spool overlap for best accuracy and
dynamics in directional controls and not
compensated flow regulations.
They are specifically designed to achieve
high speed closed loop controls and to
implement alternated Pressure (Force)
/Flow controls - options /S* coupled with
spools ‘Q’ or ‘V’.
The 4-way spool , sliding into a 5-chambers
body , is directly operated by the
proportional solenoid and it is controlled
in closed loop position by means of
the LVDT transducer feedback .
The electronic driver supplies the proportional
valve with proper current to align
valve regulation to the reference signal,
the integral execution has rugged construction
and grants factory presetting for
valve-to-valve interchangeability.
Size: 06 and 10
Max flow: up to 80 and 170 l/min
Max pressure: 350 bar (DHZO)
315 bar (DKZOR)
Seals material,
see sect. , :
- =
HYDRAULIC CHARACTERISTICS( based on mineral oil ISO VG 46 at 50’c )
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Hydraulic symbols
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| Valve model | DHZO | DKZOR | ||||||
| Spool overlapping | 1,3 | 1,3 | 1,3 | 1,3 | 1,3 | 1,3 | 1,3 | |
| Spool type and size(2) | L14 | L1 | S2 | S3,L3,D3 | S5,L5,D5 | S3,L3,D3 | S5,L5,D5 | |
| Pressure limits [bar] | Ports P,A,B=350; T=210(250 with external drain/Y | Ports P,A,B=315,T=210(250/Y) | ||||||
| Max flow (1) [l/min] | 1 | 4.5 | 8 | 17 | 28 | 45 | 60 | |
| At P= 10 bar (P-T) | ||||||||
| At P= 30 bar(P-T) | 2 | 8 | 14 | 30 | 50 | 80 | 105 | |
| At P=70bar (P-T) | 3 | 12 | 21 | 45 | 74 | 120 | 160 | |
| Response time (4) [ms] |
< 30 |
< 40 | ||||||
| Hysteresis [%] | < 5% | < 5% | ||||||
| Repeatability | + 1% | + 1% | ||||||
NOTES:
Above performance data refer to valves coupled with Atos electronic drivers, see section 2
The flow regulated by the directional proportional valves is not pressure compensated. Thus it is affected by the load variations. To keep costant the regulated flow under different load conditions, modular pressure compensators are available (see tab. D150)
For different P, the max flow is in accordance to the diagrams in sections 14.2 and 15.2
0-100% step signal
| Sales office:No.1003,11 Building,Chunrong Center,Binhu Century，Baohe Area, Hefei city, China | |
| +86-551-62939227 | |
| sales@sj-hyd.com |
