Efd 725D INSTALLATION GUIDE

Introduction

The 725D Series is simple to use and will operate
many millions of cycles without maintenance.

The unique design of the 725D Series valve provides
a clean fluid cutoff with pullback for precise fluid
application at high cycle rates.

The 725DA-SS and 725DA valves feature an
adjustable pullback and flow control. The 725D and
725D-SS do not have the adjustable feature.

Each valve is shipped with a dispensing tip adapter,
fluid inlet fitting and 5-feet actuating air hose
installed. For high flow applications, the dispensing
tip adapter can be removed for installation of 1/4
NPT metal or plastic nozzles.

725D Series Piston Valve

INSTALLATION GUIDE

Electronic pdf files of EFD®manuals are also available at
www.efd-inc.com/manuals.html.

USA: 800-556-3484 or [phone]
Europe: 0800 585733 or [phone]
Asia: [phone]
[e-mail] www.efd-inc.com

®

A NORDSON COMPANY

supply line

Inlet fitting

1/8 NPT

Control air hose

Fluid

Air cylinder body

Open

Close

Stroke adjustment

Fluid body

Tip adapter
1/4 NPT

Dispensing tip

Installation

1

7

5

C

l

o

s

e

O

p

e

n

3

Set desired deposit size by adjusting valve open
time. Refer to valve controller operating manual.

10

1. Mount valve with an EFD universal

valve mount (#7002VM) or other fixture.

2. Connect fluid supply line to valve. If

3/8” tubing is used, change to fitting
#7610BP supplied.

3. Connect fluid supply line to reservoir.

The reservoir can accept either 1/4” OD
or 3/8” OD tubing using #62518PT
supplied.

4. Connect valve control air hose to

ValveMate

TM

controller (or other pneu­matic switch) used to control valve
open time.

5. Choose a dispensing tip or nozzle—

small tips (18-20 gauge) for low viscosity
fluid and larger tip or nozzle for higher
viscosities.

6. Fill reservoir by pouring fluid directly

into tank liner or manufacturer’s bottle
placed inside reservoir. Secure cover
prior to setting pressure.

7. Set reservoir pressure to low for thin

fluids and higher for thick fluids.

8. Place a cup under the dispensing tip

or nozzle and actuate the valve until fluid
lines, valve and dispensing tip are free
of air.

9. Set desired flow rate by adjusting fluid

reservoir pressure, valve stroke setting

*

or changing dispensing tip or nozzle.

10. Set desired deposit size by adjusting

valve open time. Refer to valve
controller operating manual.

*

725DA and 725DA-SS only

8

Air Output

Exhaust

2

6

4

9

Prior to installing this valve, please
read the associated reservoir and
valve controller operating instructions
to become familiar with the operation
of all components of the dispensing
system.

To exhaust

To pressurize

A NORDSON COMPANY

®

Steady

Test

Run

Setup Program

Time Set

Clear

Fast Slow

POWER

RUN

SETUP

CYCLE

Fast Slow

Time Set

Pressure

STOP

Time

Purge

closed

open

How the Valve Operates

Input air pressure at 70 psi*(4.8 bar)
forces the internal piston

➀➀

to move
down, causing the diaphragm seal ➁➁to
deflect and the sealing head ➂➂to open
and permit fluid flow. When the input air
pressure exhausts, the spring retracts
the piston and the sealing head closes,
stopping the fluid flow and pulling back
a slight amount of fluid.

The primary control of deposit size is the valve open time.

ValveMate Concept

The ValveMate 7000 provides easy
adjustment of valve output for maximum
end user convenience and efficiency.
Valve open time is the primary control of
deposit size. The 7000 puts push-button
adjustment of valve open time where it
needs to be—at the valve.

Deposit size can be programmed by
pressing the PROGRAM button in the
SETUP mode. This affords an easy
starting point for selecting deposit size.

Note: The EFD Ultra®TT 325 and 525
XYZ automated dispensing systems have
integrated ValveMate controllers for
operating all EFD dispense valves.

➀➀

➁➁

➁➁

➂➂

➂➂

The amount of fluid dispensed will
depend on the time the valve is
open, the viscosity of the fluid, the
air pressure in the fluid reservoir and
the dispensing tip size.

Flow rate is a function of reservoir
pressure, stroke adjustment setting,
tip size and fluid viscosity.

*

For stripes and lines, input air pressure can
be lowered to eliminate opening surge.

www.efd-inc.com [e-mail] USA 800-556-3484 Europe [phone] Asia [phone]

Purge

Time Set

Clear

Fast Slow

Fast Slow

Time Set

POWER

RUN

SETUP

CYCLE

Pressure

STOP

Time

Control Pad
set time
timer bypass
display pressure (psi, bar)
TEACH program
test cycle
purge
reset

Function Indicators

Pressure/Time Toggle

Emergency Stop

Steady

Test

A NORDSON COMPANY

VALVEMATE
7000

®

Run

Setup Program

Rear Panel
air input
power input
(voltage selector)
air output to valve
I/O connector with alarm
output (<60 psi)
connector for
optional foot pedal

Specifications

725DA-SS and 725DA

Size: 149.1 mm length x 29.5 mm diameter

(5.87” x 1.16”)

Weight:

725DA-SS: 321 grams (11.32 oz)
725DA: 241 grams (8.5 oz)

Fluid body and cap:

725DA-SS: Type 303 stainless steel
725DA: Hard-coated aluminum

725D-SS and 725D

Size: 123.4 mm length x 28.5 mm diameter

(4.86” x 1.12”)

Weight:

725D-SS: 279 grams (9.85 oz)
725D: 196 grams (6.91 oz)

Fluid body and cap:

725D-SS: Type 303 stainless steel
725D: Hard-coated aluminum

General

Valve seal/diaphragm: FDA-approved UHMW* polymer

Fluid inlet thread: 1/8 NPT female

Output thread: 1/4 NPT female

Mounting hole: (1) 1/8 NPT female blind hole

Air pressure required: 70 to 90 psi (4.8 to 6.2 bar)

Maximum fluid pressure: 100 psi (6.9 bar)

Maximum operating temperature: 43°C (110°F)

* Ultra High M

olecular Weight

For consistent dispense valve operation and easy adjustment of
valve output, EFD recommends using the ValveMate 7000 con­troller on all automatic, semi-automatic and benchtop applica­tions.

The EFD Ultra TT Series positioning systems incorporate dispens­ing control into the main system.

Contact the EFD Dispense Valve Systems Group for details.

For EFD sales and service in over 30 countries,
contact EFD or go to www.efd-inc.com/contact

EFD, Inc.

East Providence, RI USA
800-556-3484; [phone] (outside the USA)
[e-mail] www.efd-inc.com

EFD International Inc.

Dunstable, Bedfordshire, UK
0800 585733 or [phone]
Ireland 00800 8272 9444
[e-mail] www.efd-inc.com

EFD, Inc., Asia

China: [phone]
[e-mail] www.efd-inc.com/cn
Singapore: [phone] [e-mail]

©2006 Nordson Corporation 725D-INSTALL-01 v062606

®

A NORDSON COMPANY