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Parker VO40 Technical Information

Open-center directional control valve
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VO40 Open-Center
Directional Control
Valve
Catalog HY17-8505/UK
April 2007

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Table of Contents
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  Summary of Contents for Parker VO40

  • Page 1 VO40 Open-Center Directional Control Valve Catalog HY17-8505/UK April 2007...
  • Page 2 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 aspects of your application, including consequences of any failure, and review the information concerning the product or sys- tem in the current product catalogue.
  • Page 3: Table Of Contents

    Dimensions ...7-8 Handle Actuation vs. Spool Direction ...9 Ordering Information How to Order ...10 General Valve Assembly ...11 Inlet Cover ...12-13 Outlet Cover ...14-15 Work Sections ...16-20 Mid-Inlet ...21 Assembly Configuration Form ...22 Open-Center Directional Control Valve VO40 Parker Hannifin Corporation...
  • Page 4 = 2.2046 lb = 0.22481 lbf 1 bar = 14.504 psi = 0.21997 UK gallon = 0.26417 US gallon 1 cm = 0.061024 in = 3.2808 feet 1 mm = 0.03937 in 9/5 °C + 32 = °F Parker Hannifin Corporation...
  • Page 5: Introduction

    Catalog HY17-8505/UK Introduction 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.
  • Page 6 Catalog HY17-8505/UK Introduction State-of-the-Art Manufacturing Parker is committed to using lean manufacturing to eliminate waste while streamlining processes. Lean technology helps us meet customer request dates quickly and cost-effectively. We also rely on state-of-the-art equipment and technology, such as computer- aided machining, to ensure product quality.
  • Page 7: Technical Information

    Catalog HY17-8505/UK Technical Information 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.
  • Page 8: Specifications

    ¾-16 UNF >\zn-18 UNF Work ¾-16 UNF >\zn-18 UNF Sections Inlet M\zn-20 UNF M\zn-20 UNF Work M\zn-20 UNF M\zn-20 UNF Sections Work Z\, NPT Z\, NPT Sections Parker Hannifin Corporation C\,-19 C\,-19 C\,-19 C\,-19 C\,-19 C\,-19 ¼ ¼ Z\, NPT...
  • Page 9: Performance Curves

    While the o-rings in the valve are normally of nitrile rub- ber, there are a number of special fluorocarbon variants. Please contact Parker for further information. Temperature Oil temperature, working range: +20°C to 90 °C (68 to 194 °F)*...
  • Page 10: Schematic Circuit Types

    In the open-center tandem circuit, oil flows through the open-center passage when all of the spools are in neutral. Tandem work-sections are fed from the open center and the parallel path is blocked. A tandem work-section will give priority to an upstream work-section. [24] [26] Open-Center Directional Control Valve VO40 [34] [34] Parker Hannifin Corporation...
  • Page 11: Dimensions

    B = 32.0 (1.26) + 32.0 (1.26) x No. WORK STATIONS 4-Position Spool 25.0 (0.98) (0.22) (0.22) 114.2 (4.50) STROKE STROKE 207.5 (8.16) 70.0 (2.76) 140.0 161.8 (5.51) (6.37) 25.0 (0.98) 15° 15° 10° (Float) 25.0 (0.98) (0.37) FLOAT STROKE (0.22) (0.22) STROKE STROKE Parker Hannifin Corporation 132.7 (5.23)
  • Page 12: Dimensions

    ∅30.0 ∅ ( 1.18) Dual Actuator 5.50 (0.216) Handle Rod Open-Center Directional Control Valve VO40 (11.6) 37.0 (1.46) 92.0 (3.62) 6.00 (0.236) 16.25 (0.640) 62.0 (REF) (2.44) M8x1 Inch equivalents for millimeter dimensions are shown in (**) Parker Hannifin Corporation...
  • Page 13: Handle Actuation Vs. Spool Direction

    Note: Circuit reflects spool position, not handle position. Right-Hand Joystick Spool OUT - Section 2 Power to “B” Port Spool OUT – Section 1 Power to “B” Port Spool IN – Section 2 Power to “A” Port Parker Hannifin Corporation...
  • Page 14: Ordering Information

    Catalog HY17-8505/UK Ordering Information 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.
  • Page 15: General Valve Assembly

    Catalog HY17-8505/UK Ordering Information Valve Assembly – General Information The VO40 has two basic thread versions - UNF (SAE) or BSP. [04] – Connections Thread 3/8 BSP Inlet, Outlet & Work Ports. 9/16" UNF (SAE-6) Inlet, Outlet & Work Ports.
  • Page 16 Ordering Information – Inlet Cover 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 –...
  • Page 17 [17] – Pressure Setting – Note: Relief valve code PN and PA max setting is 207 bar (3000 PSI). [17C] – Relief Flow Setting Flow in LPM or GPM. Open-Center Directional Control Valve VO40 Enter pressure setting (PSI or Bar) Parker Hannifin Corporation...
  • Page 18: Outlet Cover

    Catalog HY17-8505/UK Ordering Information – Outlet Cover 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.
  • Page 19: Outlet Cover

    Catalog HY17-8505/UK Ordering Information – Outlet Cover [33] to [35] – Outlet Porting Options Power-Beyond TANK OPEN CENTER Open-Center Directional Control Valve VO40 OUTLET OUTLET POWER BEYOND Closed-Center OUTLET OUTLET TANK CLOSED OPEN CENTER CENTER PLUG Parker Hannifin Corporation...
  • Page 20 Ordering Information – Work Sections 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.
  • Page 21 (in development) Solenoid Operated – On/Off. Pneumatic actuator – single ended. The pneumatic actuator for the VO40 allows the spool to be operated by a pneumatic signal. The pneumatic actuator is assembled onto one side of the work section and the opposite end is open and available for the addition of a handle.
  • Page 22 Mechanical Joystick – right side version (must be placed on two adjacent work sections). Handle Rod Assembly is sold as a separate line item PN: K-VO40-H1. [51C] – Spool Clevis or Handle Bracket Location This field is used to indicate the location of the handle lever and bracket assembly –...
  • Page 23 Double-acting (4-way) spool. Work port “B” pressure is bled to tank, when the spool is in the neutral position. Bleed notch is designed for 0.5 GPM @1000 PSI. (1.9 LPM @ 69 Bar) Open-Center Directional Control Valve VO40 Parker Hannifin Corporation...
  • Page 24 This section is used to provide additional spacing between two work sections. All other fields in the work section code can be left blank. (Contact Parker for size options available.) Open-Center Directional Control Valve...
  • Page 25: Mid-Inlet

    Catalog HY17-8505/UK Ordering Information – Mid-Inlet The VO40 mid-inlet options are split or combined flow. They are available with a main RV option. There is also a provision for an outlet port on the split flow version only. The coding to specify a mid-inlet is made by three fields as shown below:...
  • Page 26: Assembly Configuration Form

    Catalog HY17-8505/UK Assembly Configuration Form Open-Center Directional Control Valve VO40 FREE FREE FREE FREE FREE FREE FREE FREE FREE FREE FREE FREE Parker Hannifin Corporation...
  • Page 27 Industrial Bulletin HY02-8022 Electronics/Remote Controls Parker’s unique IQAN ap- proach combines sturdy, well-tested hardware with intelligent, flexible compu- ting power. Motors Power Take Off Parker Chelsea leads the...
  • Page 28 Tel.: +353 (0)1 466 6370 Fax: +353 (0)1 466 6376 Parker Hannifin is the world’s premier supplier of motion and control systems and solutions, with sales and manufacturing facilities throughout the world. For product information and details of your nearest Parker sales office, visit us at www.parker.com or call free on 00800 2727 5374.