Modular Valve controls compact equipment.

Press Release Summary:

Rated 10.6 gpm and 4,350 psi, VO40 Open-Center Directional Control Valve can be stacked to 10 sections. Optional lock-valve section can be used in applications where no leakage or function drift is allowed. Metering notches on spool lands let operator actuate functions simultaneously, while slotted design of valve sections allows users to add or change sections and functionality. Enclosed handle assembly protects spool and spool-seal area from contamination and corrosion.

Original Press Release:

Modular, Low-Flow Valve Controls Compact Equipment

ELYRIA, OHIO - The world's leading supplier of motion control products, Parker Hannifin Corporation, announces the VO40 Open-Center Directional Control Valve, its latest addition to the industry's most complete lines of mobile hydraulic valves. The VO40 is a high-performance, cost-effective, low-flow valve rated 40 LPM (10.6 GPM) and 300 Bar (4350 PSI). This sectional valve complements other product lines, can be stacked to 10 sections, and will find wide application in the growing compact equipment market.

Unique features of the VO40 valve minimize function drift, and precise metering ensured by machined lands provides repeatable control. Putting this level of precision into the machine functions guarantees productivity, allowing every job to be done quicker, safer and on time. Flexible performance options and enhanced serviceability make this product line well-suited for use on a wide range of compact equipment including implements, attachments, skid-steer loaders, forklifts, trenchers, directional borers, agricultural machinery, small cranes and aerial platforms.

The product line features a unique lock-valve section option that can be used in applications where no leakage or function drift is allowed. Application of this lock-valve can save OEMs hundreds of dollars per installation by eliminating the need for complex accessory valves. In addition:
o A complex series of metering notches on the spool lands let the operator actuate functions simultaneously, providing for cycle-time efficiency and secure operation. In addition, these notches can be tuned for all types of operations including both resistive loads (meter in) and negative loads (meter out). The design allows the spool to be inserted into either end of a symmetrical housing.
o The slotted design of the valve sections allows users to easily add or change sections and functionality. This feature is important in markets where aftermarket and OEM options are available, and can be added as required at a later date. Unlike many other similar designs, sections of the VO40 can be removed without taking apart the entire assembly.
o An enclosed handle assembly protects the spool and spool-seal area from contamination and potential corrosion, while the robust trapped-seal design in the VO40 ensures reliable operation. In addition, using the same generous-size section seals in all locations eliminates the chances of incorrect assembly during service or restacking.

Additional benefits
Besides the savings provided by the lock-valve option, a number of other benefits are offered by the VO40 over competitive solutions:
o The improved controllability supplied by the VO40's unique spool design reduces cycle time by as much as 10 %, increasing application efficiency.
o Lower pressure drops (by as much as 10%) compared to other valves of similar size means real savings. Decreased fuel consumption and improved efficiency reduce system-cooling requirements and in some cases may eliminate the need for expensive hydraulic cooling systems.
o Large cross-section seals using the latest in material technology provide both durable and reliable operation, reducing downtime and expensive clean ups.

Parker's worldwide network of field sales engineers and distributors offer hands-on, local customer support. For more information on application of the VO40, call 1-800-CPARKER (1-800-272-7537) or visit our Web site at

Parker Hydraulic Valve Division
Parker Hannifin HVD offers a single source for mobile hydraulic valves. Our foundation of excellence is built on an extensive product line and in-depth knowledge of our markets, including construction, aerial work platform, refuse, forestry, material handling, truck, snow and ice, mining and agriculture. We specialize in innovation. Our engineers and field-sales teams have years of experience analyzing, evaluating, and building mobile solutions using our comprehensive line of hydraulic valves and other components

Parker Hannifin Corporation
With annual sales exceeding $8 billion, Parker Hannifin is the world's leading diversified manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of commercial, mobile, industrial and aerospace markets. The company employs more than 50,000 people in 46 countries around the world. Parker has increased its annual dividends paid to shareholders for 49 consecutive years, among the top five longest-running dividend-increase records in the S&P 500 index. For more information, visit the company's web site at, or its investor information site at

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