Atos Proportional Directional Valve DHZO-A, Direct Operated without position transducer, Off-board driver, 3 Position Spring Centered, P, A, B, T positive overlapping, Linear spool type with Max flow 8 l/min at Dp 30 bar, DHZO-A-071-L1-20
Part Number : DHZO-A-071-L1-20
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![Atos]()
DHZO-A are Proportional Directional Valve, Direct operated without position transducer, which provide both directional and non- compensated flow control according to the electronic reference signal.
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KWD 300.000
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Description
Specifications
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Description
DHZO-A are proportional valves, direct operated without position transducer, which provide both directional and non-compensated flow control according to the electronic reference signal. They operate in association with electronic drivers which supply the proportional valves with proper current to align valve regulation to the reference signal supplied to the electronic driver. They are available in different executions: -A, without position transducer; -AE, -AES as -A plus analogue (AE) or digital (AES) integral electronics ; -AEG, as AES plus internal reference generation selected by four on-off inputs (0÷24VDC) available on the main connector. -AEZ, as AES plus internal cycle generation for automatic control of actuator’s motion cycle. The 4-way spool, sliding into a 5-chambers body, is directly operated by proportional solenoids. The integral electronics ensures factory presetting, fine functionality plus valve-tovalve interchangeability and simplified wiring and installation. The electronic main connector is fully interchangeable for –AE and –AES executions. Standard 7 pin main connector is used for power supply, analog input reference and monitor signals. 12 pin connector is used for -AEG, -AEZ versions and for option /Z (AES). The valves with BC and -BP interfaces can be integrated into a fieldbus communication network and thus digitally operated by the machine control unit. The coils are fully plastic encapsulated (insulation class H) and the valves have antivibration, antishock and weather-proof features. Mounting surface: ISO 4401 sizes 06 and 10. Max flow respectively up to 50 l/min and 105 l/min with valve differential pressure ?p = 30 bar. Max pressure = 350 bar for DHZO; 315 bar for DKZOR.
General Information
DHZO proportional valves are CE marked according to the applicable Directives (e.g. Immunity/Emission EMC Directive and Low Voltage Directive). Installation, wirings and start-up procedures must be performed according to the general prescriptions shown in table F003 and in the installation notes supplied with relevant components. The electrical signals of the valve (e.g. monitor signals) must not be directly used to activate safety functions, like to switch-ON/OFF the machine’s safety components, as prescribed by the European standards (Safety requirements of fluid technology systems and components-hydraulics, EN-982).Downloads
Specifications
Max Pressure
350 Bar
Valve Type
3 position, spring centered
Spool overlapping in central position
P, A, B, T positive overlapping (20% of spool stroke)
Spool type
Linear
Spool size
Max flow 8 l/min at Dp = 30 bar (P-T)
Options
Base version
Voltage code
Standard coil for 24DC Atos drivers
Series number
20 Series
Seals material
NBR
Max Power
30/35 Watt
Protection degree
IP65
Ambient temperature
-20°C to +70°C
Country of origin
Italy
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Atos Proportional Directional Valve DHZO-A, Direct Operated without position transducer, Off-board driver, 3 Position Spring Centered, P, A, B, T positive overlapping, Linear spool type with Max flow 8 l/min at Dp 30 bar, DHZO-A-071-L1-20
Part Number : DHZO-A-071-L1-20
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Atos Proportional Directional Valve DHZO-A, Direct Operated without position transducer, Off-board driver, 3 Position Spring Centered, P, A, B, T positive overlapping, Linear spool type with Max flow 8 l/min at Dp 30 bar, DHZO-A-071-L1-20
Part Number : DHZO-A-071-L1-20
Vickers by Danfoss 21 Series Solenoid Controlled Proportional Pilot Valve 02-157451, KHDG4V30215745121
Part Number : KHDG4V30215745121
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