740V Series Dispense Valve
Operating Manual
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A NORDSON COMPANY
US: 88-333-0311
UK: 0800 585733
Mexico: 001-800-556-3484
If you require any assistance, or have specific questions, please contact us.
US: 888-333-0311
Telephone: (401) 434-1680
Fax: (401) 431-0237
E-mail: technical@efd-inc.com
Mexico: 001-800-556-3484
UK: 0800 585733
EFD Inc.
977 Waterman Avenue, East Providence, RI 02914-1342 USA
Sales and service of EFD Dispense Valve Systems is available through EFD authorized distributors in over 30 countries. Please contact EFD U.S.A. for names and addresses.
Contents |
|
Introduction .................................................................. |
2 |
Specifications and Flow Chart .................................... |
3 |
How The Valve Operates .......................................... |
4-5 |
Typical Setup ............................................................ |
6 |
Setup Instructions........................................................ |
7 |
740V-SS Exploded View .............................................. |
8 |
Maintenance and Cleaning .................................... |
9-12 |
Troubleshooting.......................................................... |
13 |
Warranty ...................................................... |
back cover |
740V-MAN ©2003 EFD Inc.
This manual is for the express and sole use of EFD valve purchasers and users, and no portion of this manual may be reproduced in any form.
Teflon is a registered trademark of E.I. DuPont.
EFD, VALVEMATE and SafetyLok are trademarks of EFD Inc.
Introduction
The 740V Series dispense valves are precise, needletype valves manufactured to the highest quality standards. The valves are produced to very close tolerances to ensure proper and reliable operation. Each valve has been thoroughly tested prior to shipping.
The 740V valves are used with VALVEMATE™ controllers for precise, repeatable outputs from a fraction of a microliter up to continuous stripes of low to high viscosity fluids. It is an ideal valve for use on automatic assembly machines.
Each valve comes equipped with a 5-ft actuating air hose and male quick-connect, adjustable stroke control and fluid inlet fitting. The dispensing tip adapter fea-
tures a SafetyLok™ collar for secure dispensing tip attachment.
To obtain the maximum performance from this fine equipment, please read through these instructions carefully.
Note: For consistent dispense valve operation and easy adjustment of valve output, EFD recommends using the VALVEMATE™ 7000 controller on all automatic, semiautomatic and bench-top applications.
Contact EFD Dispense Valve Systems Group for details.
2 / Introduction
Specifications
Size: 4.510" x 1.060" diameter (114.6 mm x 26.9 mm)
Weight: 740V-SS: 9.0 oz (255 g) 740V: 6.36 oz (180.3 g)
Fluid inlet thread: 1/8 NPT Female
Fluid outlet: Male luer lock
Air pressure required: 70 psi (4.8 bar)
Maximum input fluid pressure: 300 psi (21 bar)
Mounting: 1/4-28 UNF tapped hole
Operation frequency: Exceeds 400 per minute
Output variation: ±0.5% nominal
Note: Specifications and technical details are subject to engineering changes without prior notification.
Construction
Air cylinder body: Hard-coated aluminum
Fluid chamber: 740V-SS: Type 303 stainless steel 740V: Hard-coated aluminum
Piston: Type 303 stainless steel
Needle: Type 303 stainless steel
Tip adapter/needle seat: Type 303 stainless steel
SafetyLok™ collar: Nylon
Needle packings: Teflon®
Note: All stainless steel valve parts are passivated.
740V-SS Flow Chart
Fluid Flow ml/second
50
45
40
35
30
25
20
15
10
5
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10 |
20 |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
Reservoir Pressure - psi
Free flow of water through tip adapter with no dispensing tip restrictions.
3 / Specifications and Flow Chart
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