EFD 740V User Manual
US: 88-333-0311
UK: 0800 585733
Mexico: 001-800-556-3484
740V Series Dispense Valve
Operating Manual
20
0
5
®
A NORDSON COMP ANY
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.
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.
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
Note: For consistent dispense valve operation and easy adjust-
ment 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.
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.
2 / Introduction
740V-SS Flow Chart
Free flow of water through tip adapter with no dispensing tip
restrictions.
Note: All stainless steel valve parts are passivate
d.
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
®
3 / Specifications and Flow Chart
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.
10 20 30 40 50 60 70 80 90 100
Reservoir Pressure - psi
0
Fluid Flow ml/second
5
10
15
20
25
30
35
40
45
50
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