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VO40 Open-Center
Directional Control
Valve
Catalog HY17-8505/UK
April 2007
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Open-Center Directional Control Valve Catalog HY17-8505/UK VO40 ! WARNING FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE. This document and other information from Parker Hannifin Corporation, its subsidiaries and authorized distributors provide product and/or system options for further investigation by users having technical expertise. It is important that you analyze all asp
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Open-Center Directional Control Valve Catalog HY17-8505/UK Contents VO40 Introduction .............................................................................................................................................................1 Technical Information General Description ..........................................................................................................................................3 Operation .............................................................
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Open-Center Directional Control Valve Catalog HY17-8505/UK VO40 Conversion factors 1 kg = 2.2046 lb 1 N = 0.22481 lbf 1 bar = 14.504 psi 1 l = 0.21997 UK gallon 1 l = 0.26417 US gallon 3 3 1 cm = 0.061024 in 1 m = 3.2808 feet 1 mm = 0.03937 in 9/5 °C + 32 = °F Parker Hannifin Corporation IV
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Open-Center Directional Control Valve Catalog HY17-8505/UK Introduction VO40 Breadth of Line Parker Hannifin is a Fortune 500 company with sales of $9 billion and over 400,000 customers in 43 countries. Parker is the world’s leading supplier of motion control components and system solutions serving the mobile, industrial and aerospace markets. Parker is your single source for any hydraulic valve require- ment. We provide a wide selection of open-center and load-sense directional con
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Open-Center Directional Control Valve Catalog HY17-8505/UK Introduction VO40 You also benefit from Parker Mobile Technology Centers (MTCs) that are staffed by specially trained distributors who provide only the highest levels of customer service. These one-stop shops offer complete hydraulic systems design for mobile applications, as well as technology services such as diag- nostics, troubleshooting, computer design, testing, and integration of electronic controls. Finally, our thousa
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Open-Center Directional Control Valve Catalog HY17-8505/UK Technical Information VO40 General Description The VO40 is an open-center directional control valve with the flexibility of sectional construction. Consis- tent with this technology, it is simple in its application, reliable, easy to troubleshoot, and cost effective. The global design reflects the performance and quality ex- pected by today’s machine designers. Spools have me- tering notches in the three critical areas – open- center,
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Open-Center Directional Control Valve Catalog HY17-8505/UK Technical Information VO40 Specifications Connections Pressures Inlet Port: 300 bar (4350 PSI) Tank Port: 50 bar (725 PSI) Standard valves are available in 3/8" BSP (DIN 3852/2), SAE-6 Work Ports: 300 bar (4350 PSI) or SAE-8 (J1926/1). Flow Rates 40 LPM (10.6 GPM) (maximum Connection Location SAE -8 SAE-6 BSP recommended) P1, P2 Inlet ¾-16 UNF >\zn-18 UNF C\,-19 Internal Pilot Required for solenoids – Pressure contact Parker T1, T2
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Open-Center Directional Control Valve Catalog HY17-8505/UK Technical Information VO40 Performance Curves Pressure Drop - Open Center P →T Pressure Drop - Open Center P →T Side Inlet to Side Outlet Top Inlet to Top Outlet PSI Bar PSI Bar 217.5 15 217.5 15 P P T T 174.0 12 174.0 12 130.5 9 130.5 9 8 Section Valve 8 Section Valve 3 Section Valve 3 Section Valve 6 1 Section Valve 6 87.0 87.0 1 Section Valve 43.5 3 43.5 3 0 0 LPM 10 20 30 40 50 LPM 10 20 30 40 50 0 0 GPM 2.6 5.3 7.9 10.6 13.2 GPM 2.6
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Open-Center Directional Control Valve Catalog HY17-8505/UK Technical Information VO40 Circuit Types – Parallel Circuit In the open-center parallel circuit, oil flows through the open-center passage when all of the spools are in neutral. When spools are shifted, oil is diverted into the parallel path and available to each of the selected work-sections. Simultaneous operation can be achieved, when two or more spools are selected. However, since oil will take the path of least resistance the ope
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20° 15° 15° 15° 15° 15° Open-Center Directional Control Valve Catalog HY17-8505/UK Dimensions VO40 Inch equivalents for millimeter dimensions are shown in (**) Assembly US 207.5 (8.16) B A B 32.0 32.0 9.4±0.4 32.0 92.0 (3.62) (1.26)(1.26) (1.26) (0.37±0.01) 87.0 (3.42) 15.0 (0.59) 70.0 (2.76) 140.0 161.8 (5.51) (6.37) 213.6 (8.41) 25.0 (0.98) 80.9 132.7 (3.19) (5.23) 15° 27.0 15° (1.06) A = 76.0 (3.00) + 32.0 (1.26) x No. WORK STATIONS 191.0 (7.51) B = 32.0 (1.26) + 32.0 (1.26) x No. WORK STATIO
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20° 16° 16° Open-Center Directional Control Valve Catalog HY17-8505/UK Dimensions VO40 Mechanical Joystick Inch equivalents for millimeter dimensions are shown in (**) 295 (11.6) 58 (2.3) 58 (2.3) 94 (3.7) Float 137 (5.4) Float 102 (4.0) 43 (1.7) 18 (0.7) Pneumatic Actuator 37.0 ∅30.0 (1.46) ( ∅1.18) 92.0 (3.62) Dual Actuator 6.00 (0.236) 16.25 (0.640) 62.0 (REF) (2.44) 5.50 (0.216) Handle Rod 42 R9 M8x1 30 20 R1 140 Parker Hannifin Corporation 8 16° 16° 20° ∅4.80 (0.189) Ø7,3 Ø13 Ø11 Ø7,35
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Open-Center Directional Control Valve Catalog HY17-8505/UK Technical Information VO40 Handle Actuation vs. Spool Direction A B Push Handle TANK TANK • Spool Out • Energize port “B” OPEN OPEN • Port “A” to tank CENTER CENTER PARALLEL PARALLEL Pull Handle PATH PATH Note: • Spool In Circuit reflects spool • Energize port “A” position, not handle position. • Port “B” to tank Left-Hand Joystick Right-Hand Joystick Spool OUT - Section 2 Spool OUT - Section 1 Power to “B” Port Power to “B” Port Spool
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Open-Center Directional Control Valve Catalog HY17-8505/UK Ordering Information VO40 How to Order the VO40 Valve Assembly A specification sheet is located in the back of this book, and is also available in an electronic Excel format on our web site. This form should be used to configure a valve assembly. The layout starts from the inlet cover on the left, work sections and mid-inlets in the middle and the outlet cover on the far right. Each field will require an entry, and the fields are repr
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Open-Center Directional Control Valve Catalog HY17-8505/UK Ordering Information VO40 Valve Assembly – General Information The VO40 has two basic thread versions - UNF (SAE) or BSP. [04] – Connections Thread G 3/8 BSP Inlet, Outlet & Work Ports. U 9/16" UNF (SAE-6) Inlet, Outlet & Work Ports. U6 9/16" UNF (SAE-6) Work Ports, 3/4" UNF (SAE-8) Inlet/Outlet Ports. U8 3/4" UNF (SAE-8) Inlet, Outlet & Work Ports. [05] – System Voltage To be determined when the solenoid option is released [07] –
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Open-Center Directional Control Valve Catalog HY17-8505/UK Ordering Information – Inlet Cover VO40 The inlet cover of VO40 is available in two versions. One is the standard inlet and the other is an inlet with a sole- noid pump unloader (in development). The porting location options for the standard inlet are: 1) Top/side – inlet and outlet ports. Any unused ports can be plugged. 2) Top – inlet and outlet ports only. All inlet bodies have a gage port, that comes plugged. SAE #4 (7/16"x20 UN
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Open-Center Directional Control Valve Catalog HY17-8505/UK Ordering Information – Inlet Cover VO40 [16] - Main Relief Options PS Adjustable main pilot-operated relief. Adjustment range: 50 to 300 bar (725 to 4300 PSI). PB Adjustable main pilot-operated relief (Tamperproof aluminum cap). Adjustment range: 50 to 300 bar (725 to 4300 PSI). PN Adjustable main direct-acting relief. Adjustment range: 60 to 207 bar (900 to 3000 PSI). PA Adjustable main direct-acting relief (Tamperproof
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Open-Center Directional Control Valve Catalog HY17-8505/UK Ordering Information – Outlet Cover VO40 The VO40 outlet cover is available in two versions: Standard or with pilot generation and regulation for proportional solenoid applications. The standard outlet has two porting configurations available: 1) Top and side outlet ports along with machining for conversion to power-beyond or closed-center. 2) Top outlet only. The coding to specify an outlet is made by four fields as shown below:
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Open-Center Directional Control Valve Catalog HY17-8505/UK Ordering Information – Outlet Cover VO40 [33] to [35] – Outlet Porting Options Power-Beyond Closed-Center OUTLET OUTLET OUTLET OUTLET TANK TANK CLOSED OPEN OPEN POWER CENTER CENTER BEYOND CENTER PLUG Parker Hannifin Corporation 15
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Open-Center Directional Control Valve Catalog HY17-8505/UK 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
