Parker Hannifin manual Ordering Information Work Sections VO40, Work Section Circuitry

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Catalog HY17-8505/UK

Open-Center Directional Control Valve

Ordering Information – Work Sections

VO40

 

 

The VO40 valve can be supplied in combinations from one to ten work sections. For each work section there is a variety of spool options, actuators, positioners and port accessories. Work sections can have parallel, series, and/or tandem circuitry. All types can be combined in the same valve assembly.

All work sections with hold in neutral spools have transition checks (load checks). All work sections with free flow in neutral spools (motor) do not include transition checks (load checks). Contact Parker if you require a deviation from this configuration.

Work sections are available with or without work port option machining. Integrated pilot-operated checks (Lock- Out) are available in a specially machined casting (ordering code on page 20 [76 A/B]). A spacer section which provides for more spacing between sections is also available (ordering code on page 20 [90]).

Examples of work port machining options:

Section without RV Cavities

Section with RV Cavities

Section with PO Checks

The VO40 Pilot-Operated Check (Lock-Out) sections provide near zero leakage and can prevent cylinder drift when the spool is in the neutral position. When the spool is shifted to a power position, oil is directed to one work port. Return oil is momentarily blocked until pilot pressure unseats the check (3.1:1 ratio). With 207 bar (3000 PSI) load, it will require 67 bar (968 PSI) into the opposite work port to unlock.

The spool is a 4-way, 3-position free flow spool which prevents system pressure leakage from building up and unlocking the PO checks.

The coding to specify a work section is made by 11 fields, as shown below:

[47]– Work Section Circuitry

P Parallel Circuitry.

TTandem Circuitry – Provides priority to upstream sections.

SSeries Circuitry– (In development).

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Parker Hannifin Corporation

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Contents VO40 Open-Center Directional Control Valve Offer of Sale VO40Contents VO40 Conversion factors Introduction VO40 Breadth of Line Total Machine Motion ControlCustomer Service with a Global Reach Introduction VO40 State-of-the-Art ManufacturingOpen-Center Directional Control Valve Technical Information VO40 General DescriptionOperation BenefitsConnections Technical Information VO40 SpecificationsWeights Environmental Characteristics Technical Information VO40 Performance CurvesTechnical Information VO40 Circuit Types Parallel Circuit Circuit Types Tandem Circuit PriorityDimensions VO40 AssemblyDual Actuator Handle Rod Dimensions Mechanical JoystickPneumatic Actuator Push Handle 140 Inlet Cover Portion of Spec SheetExample Inlet Cover Sect #1 Customer Designated ID Enter Customer Part Number Connections ThreadSurface Treatment Paint Ordering Information Inlet Cover VO40 Max Pump FlowType of Inlet 24 to 27 Inlet Porting Options17C Relief Flow Setting Ordering Information Inlet Cover VO40 Main Relief OptionsOrdering Information Outlet Cover VO40 Type of Outlet US Standard33 to 35 Outlet Porting Options Top and Side Oulet PortsPower-Beyond Closed-Center Ordering Information Work Sections VO40 Work Section CircuitryOrdering Information Work Sections VO40 Spool Actuators Detent in neutral and a positionsSpring centered with in detent Detent in a position and spring centering51C Spool Clevis or Handle Bracket Location Spool Position IndicationOrdering Information Work Sections VO40 Spool Function Spacer Section 76 A/B Work Port Valves88 A/B Work Port Option 98C Mid-Inlet Relief Flow Setting Ordering Information Mid-Inlet VO40Mid Inlet Options Main Pressure ReliefForm Parker HannifinExtensive Hydraulic Product Offering Hydraulics Group Sales Offices

VO40 specifications

Parker Hannifin's VO40 is a sophisticated and versatile hydraulic valve that has garnered attention for its innovative design and wide-ranging applications. Designed to meet the increasing demands for efficiency and reliability in various industrial and mobile machinery, the VO40 series exemplifies Parker's commitment to providing high-performance solutions.

One of the primary features of the VO40 is its compact design, which allows for easy integration into systems with limited space. This is accomplished without sacrificing performance, as the valve delivers exceptional flow rates, which can significantly enhance the efficiency of hydraulic systems. The VO40's multi-functionality enables it to serve diverse roles, from directional control to flow regulation, making it suitable for a variety of hydraulic applications.

The VO40 utilizes advanced technologies, including modular construction, which provides flexibility for different system configurations. This modularity allows users to customize the valve to their specific requirements, whether they need a simple on/off control or more complex, proportional flow regulation. The valve's design also incorporates electronic control capabilities, enabling users to achieve precise movements and optimize system performance.

In terms of materials, the VO40 is constructed from robust components to withstand high-pressure operations and harsh environments. The valve's sealing technology is engineered for durability and reliability, minimizing the risk of leaks and prolonging the service life of the product. This reliability is a critical factor in reducing maintenance costs and ensuring operational continuity in demanding applications.

Another significant characteristic of the VO40 is its ease of installation and maintenance. The design allows for quick assembly and disassembly, which is crucial for minimizing downtime during maintenance activities. Additionally, the valve features diagnostic capabilities, enabling operators to monitor performance and address potential issues proactively.

In conclusion, the Parker Hannifin VO40 hydraulic valve stands out in the marketplace due to its compact size, modularity, advanced electronic controls, and robust construction. Its design and technology make it an ideal choice for users seeking reliable and efficient solutions for their hydraulic systems. By integrating the VO40 into their operations, companies can enhance productivity while ensuring a long-lasting, low-maintenance hydraulic solution.
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