EFD 782RA INSTALLATION GUIDE

Introduction

The 782RA is a precision, air-actuated spray valve that
produces a narrow radial output ideal for coating the inte­riors of cylinders. LVLP (low volume low pressure) air is
used to atomize the fluid, while a precision air motor
drives a rotating air cap that produces the radial output.

The 782RA valve has a 5.6 cm (2.2”) extended rotor air
cap that will reach inside cylinders with a minimum inner
diameter of 2.5 cm (1.0”). The valve is simple to use and
will operate many millions of cycles without maintenance.

782RA Spray Valve

INSTALLATION GUIDE

Rotor

Fluid inlet
fitting

Air cylinder
body

Fluid supply line

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

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

®

A NORDSON COMPANY

0

5

Installation

1. Mount valve using the 1/4-28

UNF tapped hole on the air
cylinder body.

2. Connect the fluid feed hose to

the reservoir outlet and the
valve-inlet port using the
appropriate fittings (supplied).

3. Connect the 4 mm diameter

air hoses from the valve to the
controller. The white goes to
the “A” port and the black
goes to the “B” port.

4. Connect the 6 mm diameter

air hoses from the motor to
the air preparation assembly.
The white connects to the
control valve. The black
connects to the motor speed
control fitting.

5. Fill the fluid reservoir. After

filling, secure the cover and
connect the reservoir air pres­sure regulator to the air tee
using the flexible air line (sup­plied). Attach the black male
quick-connect on the air line
to the reservoir regulator and
then attach the white quick­connect to the air tee. To
pressurize the system, slide
the shut-off valve on the air
line toward the fluid reservoir.

6. Set the reservoir pressure reg-

ulator according to fluid vis­cosity, to low for thin fluids 1
to 3 psi (0.07 to 0.2 bar) and
higher for thick fluids.

7. Set the needle stroke control

at one turn open. This is a
starting point. Final setting will
be determined by the desired
flow rate.

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.

Output A

Output B

3

5

1

7

2

6

Air Preparation Assembly: See pages 6 – 7,
ValveMate 7060RA Controller Operating Manual.

To pressurize

To exhaust

®

VALVEMATE

A NORDSON COMPANY

7060RA

M

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How the Valve Operates

ValveMate Concept

The ValveMate 7060RA provides
easy adjustment of valve output
for maximum end-user conven­ience and efficiency. Valve open­time is the primary control of
deposit size. The 7060RA puts
push-button adjustment of valve
open time where it needs to be –
at the valve.

The controller incorporates
unique microprocessor circuitry
to provide exact time control and
interact with the host computer.
A built-in air pressure regulator
provides low volume low pres­sure nozzle air to ensure high

open

closed

➃➃

➂➂

➁➁

➀➀

Input-air pressure at 70 psi (4.8 bar)
acts on a piston

➀➀

that retracts the

needle

➁➁

from its nozzle seat ➂➂, per­mitting fluid flow from the nozzle ➃➃. At
the same time, atomizing air from the
ValveMate™7060RA controller is turned
on and flows from the rotor air tube

➄➄

across the fluid nozzle at a 70° angle.

This atomizing air creates a pressure
drop around the nozzle, causing fluid
to atomize into fine droplets and follow
the direction of the atomizing air flow.
The rotor, spinning at approximately
2500 rpm, causes the radial output to
sweep around and evenly coat the
inner circumference of the cylinder.

When the timed actuating air
from the ValveMate 7060RA
controller shuts off, the piston
spring moves the needle onto
the nozzle seat and shuts-off
fluid flow. An adjustable
atomizing air delay ensures
that all fluid is atomized after
the valve closes, eliminating
post-deposit spatter.

transfer efficiency without
overspray.

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.

➄➄

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

®

A NORDSON COMPANY

7060RA

Rear Panel

air input
power input
air output to valve
I/O interface terminal strip
air exhaust
atomizing air output
connector for
optional foot pedal

VALVEMATE

M

M

M

Control Pad

cycle / test
time override
time / pressure
and psi / bar toggle
program
time set

Specifications

General

Size: 174.5 mm length x 68.6 mm diameter (6.87” x 2.70”)

Weight: 408.2 grams (14.4 oz)

Air consumption: <0.3 SCFM at 80 psi (5.4 bar)

Air cylinder body: Hard-coated aluminum

Fluid body: Hard-coated aluminum

Piston: Type 303 stainless steel

Piston return spring: Stainless steel

Needle and nozzle: Stainless steel

Rotor: Hard-coated aluminum

Fluid inlet hole: 1/8 NPT female

Air pressure required: 70 psi (4.8 bar)

Mounting: 1/4-28 UNF tapped hole

Spray Coverage

782RA distance from nozzle center to inside diameter of
cylinder wall.

14˚

Spray coverage shown 1/2 actual size

Nozzle distance to inside diameter

For consistent dispense valve operation and easy adjustment
of valve output, EFD recommends using the ValveMate
7060RA 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 782-INSTALL-01 v062606

®

A NORDSON COMPANY

25.4 mm (1.0”)

4.3 mm (0.17”)

76.2 mm (3.0”)

12.7 mm (0.5”)

152.4 mm
(6.0”)

25.4 mm

(1.0”)