Nordson EFD 725HF User manual

725HF High Flow Series Dispense Valves
Installation Guide
Electronic pdf les of Nordson EFD
manuals are also available at
nordsonefd.com
Introduction
The 725HF Series is simple to use and will operate many millions of cycles
without maintenance.
The unique design of the 725HF Series valve provides a clean uid cutoff
with pullback for precise uid application at high cycle rates.
Each 725HF-SS and 725HF-A valve is shipped with a dispensing tip
adapter, uid inlet tting and 5-foot actuating air hose installed. For
high-ow applications, the dispensing tip adapter can be removed for
installation of 1/4 NPT metal or plastic nozzles.
The 725HF-A is identical to the 725HF-SS, except the uid body and cap
are acetal copolymer, and the shaft and the sealing-head screw are PTFE-
coated stainless steel.
Control air hose
Air cylinder cap
Body cap
Fluid
supply line
Inlet tting
Air cylinder
Wrench ats
Nozzle

725HF High Flow Series Dispense Valves
2nordsonefd.com [email protected] 800-556-3484 Sales and service of Nordson EFD dispensing systems are available worldwide.
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.
Do not thread uid inlet ttings too far
into the valve. Doing so can obstruct
the piston shaft, causing leakage, poor
dispensing performance, and damage to
the valve.
CAUTION
1. Connect the uid feed hose to the
uid inlet tting (#7021038) installed
for use with 3/8" OD tubing and
reservoir.
2. Connect the uid supply line to
reservoir. The reservoir can accept
either 1/4" OD or 3/8" OD tubing
using #7020159 supplied.
3. Connect valve control air hose to
ValveMate™ 8000 (solenoid pack)
used to control valve open time.
4. Install nozzle to the valve output.
5. Fill reservoir by pouring uid directly
into tank liner or manufacturer’s bottle
placed inside reservoir. Secure cover
prior to setting pressure.
6. Set reservoir pressure to low for thin
uids and higher for thick uids.
7. Place a cup under the dispensing tip
or nozzle and actuate the valve until
uid lines, valve and dispensing tip
are free of air.
8. Set desired ow rate by adjusting
uid reservoir pressure or changing
dispensing tip or nozzle.
Installation
Important Note: Set desired deposit size by adjusting valve open time. Refer to valve controller operating manual.
EFD 725 EFD 725
7
1
11
5
6
4
3
2
8

725HF High Flow Series Dispense Valves
3nordsonefd.com [email protected] 800-556-3484 Sales and service of Nordson EFD dispensing systems are available worldwide.
closedopen
How the Valve Operates
Input air pressure at 4.8 bar (70 psi)
forces the internal piston to move down,
causing the diaphragm seal to deect
and the sealing head to open and permit
uid ow. When the input air pressure
exhausts, the spring retracts the piston and
the sealing head closes, stopping the uid
ow and pulling back a slight amount of
uid.
For stripes and lines, input air pressure
can be lowered to eliminate opening
surge.
The primary control of deposit size is the valve open time.
The amount of uid dispensed will
depend on the time the valve is
open, the viscosity of the uid, the air
pressure in the uid reservoir and the
dispensing tip size.
Flow rate is a function of reservoir
pressure, stroke adjustment setting, tip
size and uid viscosity.
ValveMate Concept
The ValveMate 8000 provides easy adjustment
of valve output for maximum end-user
convenience and efciency. Valve open time
is the primary control of deposit. The 8000
puts push-button adjustment of valve open
time where it needs to be—at the valve.
The ValeMate 8000 features micro-processor
circuity for extremely precise control of
deposit size. Feed lines can be purged, initial
deposit sizes set, and adjustments made quickly
and easily at the dispensing station, without stopping the
production line.
NOTE: Nordson EFD automated dispensing systems integrate
with ValveMate controllers for operating all pneumatic and
BackPack™dispense valves.
Important Note: Order your 1, 2, 3 or 4
solenoid manifold block assembly separately.
Consult EFD for recommendations.
1
2
3
2
3

For Nordson EFD sales and service in over
40 countries, contact Nordson EFD or go to
nordsonefd.com
Global
East Providence, RI USA
800-556-3484; [phone]
[email protected]
Europe
Dunstable, Bedfordshire, UK
0800 585733; [phone]
[email protected]
Asia
China: [phone]; [email protected]
India: [phone]; [email protected]
Japan: [phone]; [email protected]
Korea: [phone]; [email protected]
SEAsia: [phone]; [email protected]
©2016 Nordson Corporation 7026828 v012416
725HF High Flow Series Dispense Valves
Specifications
General
Size: 90.2 mm length x 31.1 mm diameter (3.55" x 1.22")
Valve seal/diaphragm: FDA-approved UHMW* polymer
Air cylinder body: Hard-coated aluminum
Fluid inlet thread: 1/4 NPT female
Output thread: 1/4 NPT female
Air pressure required: 4.8 to 6.2 bar (70 to 90 psi)
Maximum fluid pressure: 7.0 bar (100 psi)
Maximum operating temperature: 43° C (110° F)
725HF-SS
Weight: 295 grams (10.4 oz)
Shaft and sealing head screw: 303 stainless steel
Fluid body and cap: 303 stainless steel
Mounting hole: 5/16-24
725HF-A
Weight: 181 grams (6.4 oz)
Shaft and sealing head screw: PTFE-coated 303 SS
Fluid body and cap: inert acetal copolymer
*Ultra High Molecular Weight
For consistent dispense valve operation and easy adjustment
of valve output, Nordson EFD recommends using the
ValveMate 8000 controller on all automatic, semi-automatic
and benchtop applications.
Nordson EFD automated dispensing systems integrate
with ValveMate controllers for operating all pneumatic and
BackPack dispense valves.
Contact Nordson EFD for details.