dymax 485 User manual

Model 485
Needle Valve
User Guide

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About Dymax
Light-curable adhesives. Systems for light curing, fluid
dispensing, and fluid packaging.
Dymax manufactures industrial adhesives, light-curable adhesives,
epoxy resins, cyanoacrylates, and activator-cured adhesives. We
also manufacture a complete line of manual fluid dispensing
systems, automatic dispensing systems, and light-curing systems.
Light-curing systems include LED light sources, spot, flood, and
conveyor systems designed for compatibility and high
performance with Dymax adhesives. Dymax adhesives and light-
curing systems optimize the speed of automated assembly, allow
for 100% in-line inspection, and increase throughput. System
designs enable stand-alone configuration or integration into your
existing assembly line.
Please note that most dispensing and curing system applications
are unique. Dymax does not warrant the fitness of the product for
the intended application. Any warranty applicable to the product,
its application, and use is strictly limited to that contained in the
Dymax standard Conditions of Sale. Dymax recommends that any
intended application be evaluated and tested by the user to
ensure that desired performance criteria are satisfied. Dymax is
willing to assist users in their performance testing and evaluation.
Data sheets are available for valve controllers or pressure pots
upon request.

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Contents
Introduction............................................................... 4
Where to Get Help.............................................................4
Safety ......................................................................... 4
General Safety Considerations........................................5
Specific Safety Considerations........................................5
Product Overview ..................................................... 5
Description of the Model 485 Needle Valve...................5
Assembly and Setup ................................................. 7
Unpacking and Inspecting Your Shipment.....................7
Parts Included in the Model 485 Dispensing Valve.......7
Mounting.............................................................................8
System Interconnect.........................................................8
Adjusting Material Flow.....................................................9
Operating the Dispensing Valve .............................. 9
Operation............................................................................9
Shutdown ...........................................................................10
Maintenance and Cleaning....................................... 10
General ...............................................................................10
Troubleshooting........................................................ 11
Spare Parts and Accessories ................................... 11
Specifications............................................................ 14
Warranty .................................................................... 15

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Introduction
This guide describes how to assemble, use, and maintain the Dymax Model 485 needle
valve safely and efficiently.
Intended Audience
Dymax prepared this user guide for experienced process engineers, maintenance
technicians, and manufacturing personnel. If you are new to pneumatically operated
fluid dispensing equipment and do not understand the instructions, contact Dymax
Application Engineering to answer your questions before using the equipment.
Where to Get Help
Customer Support and Applications Engineering teams are available by phone and
email in Germany, Monday through Friday, from 8:00 a.m. to 5:00 p.m. Central
European Time. You can also email Dymax Europe GmbH at [email protected].
Please see the back cover for worldwide contact information. For more information
about this product, visit dymax.com.
Additional resources are available to ensure a trouble-free experience with our
products:
•Detailed product information on www.dymax.com
•Dymax adhesive Product Data Sheets (PDS) on our website
•Safety Data Sheets (SDS) provided with shipments of Dymax adhesives
Safety
WARNING! If you use this fluid dispensing equipment without first reading
and understanding the information in this guide, personal injury can result
from the uncontrolled release of high-pressure gas, injection injury, or
exposure to chemicals. To reduce the risk of injury, read and understand this
guide before assembling and using Dymax fluid dispensing equipment.

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General Safety Considerations
All users of Dymax fluid dispensing equipment should read and understand the user
guide before assembling and using the equipment.
To learn about the safe handling and use of dispensing fluids, obtain and read the SDS
for each fluid before using it. Dymax includes an SDS with each adhesive sold. SDS for
Dymax products can be requested through the Dymax website.
Specific Safety Considerations
Using Safe Operating Pressures
Pressurizing the components in the dispensing system beyond the maximum
recommended pressure can result in the rupturing of components and serious personal
injury. To minimize the risk of rupturing components and injury, do not exceed the
maximum operating pressure of the components in your fluid dispensing system (see
system specifications on page 11).
Preventing Injection Injury
Discharging fluids or compressed air with a dispensing tip against your skin can cause
very serious injection injury. To minimize the risk of injection injury, do not place the
dispensing tip in contact with your skin.
Product Overview
Description of the Model 485 Needle Valve
The Model 485 needle valve is designed to deliver highly accurate and consistent
deposits of low- to high-viscosity fluids such as adhesives and inks. The valve features
a precise flow adjustment control which allows an operator to finely adjust the flow rate.
The valve’s low maintenance design and precision make it ideal for high-speed and
long-run production. It easily mounts to process automation and robotics for
repeatable performance or it can be configured in a bench-top system with a DVC-345
valve controller and reservoir.

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Figure 1.
Model 485 Component Diagram
Quick Connect Air Fitting,
Fits 1/4" [6.4 mm] Tubing
Material In
Fits 3/8" [9.5 mm]
Tubing
Luer Adapter
Flow
Adjustment
Knob
Mounting Holes

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Assembly and Setup
Unpacking and Inspecting Your Shipment
When your Model 485 dispensing valve arrives, inspect the boxes and notify the
shipper of any damage immediately.
Open each box and check for equipment damage. If parts are damaged, notify the
shipper and submit a claim for the damaged parts. Contact Dymax so that new parts
can be shipped to you immediately.
Check that the parts included in your order match those listed below. If parts are
missing, contact your local Dymax representative or Dymax Customer Support to
resolve the problem.
Parts Included
•Model 485 needle valve
•Assorted dispense tip kit
•Model 485 dispensing valve user guide
Figure 2.
Model 485 Needle Valve Unpacking Diagram

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Mounting
NOTE: If the dispense valve is to be mounted in an area that limits access to the valve,
it is recommended that the setup operation be done prior to mounting. Access to
various surfaces of the valve is necessary for periodic adjustment (see Specifications).
There are two 8-32 UNC holes on the dispense valve for mounting purposes (Figure 5).
System Interconnect
Figure 3.
Valve Interconnect Diagram
Air
Supply
Air Filter Regulator
with Dump Valve
(Recommended)
Valve Controller or
Solenoid Valve
(DVC-345 Shown)
Precision Air
Regulator
(Recommended)
Material In
Air In
Material Reservoir
(20 oz Cartridge
Reservoir Shown)
Model 485 Valve

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Air
Once the dispense valve is secured to its mounting surface, connect the airline to the
port provided on the valve (Figure 3). Also connect your air supply (60-80 psi) to your
valve controller or 3-way solenoid valve (a valve controller or a 3-way solenoid valve
must be used to operate the Model 485 valve (CV of .01 or greater)). Please refer to the
valve controller user guide for detailed instructions.
Fluid
The Model 485 valve requires a material reservoir or pressure tank to draw material
from. The material reservoir should be connected to the 485 valve through the material-
in port (Figure 3) located on the valve body.
Adjusting Material Flow
Flow can be adjusted using the Flow Adjustment Knob. Turn the knob clockwise to
decrease the flow or counterclockwise to increase flow.
Operating the Dispensing Valve
Operation
1. Plumb up the valve as outlined in the setup procedures.
2. Apply air pressure by turning on the pressure to the controller.
3. If necessary, place a new dispense tip onto the valve.
4. Apply fluid pressure to the valve by turning on the pressure to the material
reservoir.
5. Cycle the valve to the open position to bleed all air that may have become
trapped when changing the dispense tip. You may need to tip the valve up to 60°
incline and continue cycling the air to remove it all.
5. Check the fluid connection for leaks. If the valve is leaking or dripping, refer to
the troubleshooting section of this manual.
6. With the flow adjustment knob backed off counterclockwise 3 or 4 turns and the
dispense tip in place, adjust the air pressure on the fluid (the valve will be in the
open dispense position). Use the flow adjustment knob to reduce the material flow
until the desired flow rate is achieved.

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Shutdown
At the end of the day or shift, it is necessary to shut down the Model 485 dispensing
system properly in order to keep material from curing inside the dispensing valve.
1. Remove the disposable dispense tip from valve and discard.
2. Relieve fluid pressure on the valve by turning off air pressure at the material
reservoir.
3. Relieve the air pressure operating the valve by turning off the air pressure to the
controller.
Maintenance and Cleaning
General
To clean the Model 485 valve, flush system with an appropriate solvent. Common
solvents used to degrade adhesive bonds include the following:
•Methylene chloride
•Chlorine bleach (dilute 10%)
•Strong base, NaOH, or KOH solution with a pH>=12
•MEK (methyl ethyl ketone) or acetone
For assistance in selecting a compatible solvent, please contact Dymax Application
Engineering.
To access the valve’s wetted components for cleaning or replacement, remove the four
Allen Hex Cap Screws (Figure 4) from the bottom of the valve.

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Troubleshooting
Table 1.
Troubleshooting Chart for Model 485 Dispensing Valve
Problem
Possible Cause
Corrective Action
The valve
does not
dispense
anything
The fluid pressure is too
low
Increase the fluid pressure
The material is cured in
the valve or tip
Disassemble and clean the
valve
There are air
bubbles in
the fluid
The valve is not properly
purged
Point the valve up and cycle it
until the air bubbles are removed
There is a problem with
the material reservoir and
fluid delivery system
Diagnose and repair
Material leaks
from the
valve tip
An air bubble is trapped in
the fluid section of the
valve or in the dispense tip
Point the valve up and cycle it
until air bubbles are purged out
Spare Parts and Accessories
Item
Part Number
Air Regulators
Air Filter Regulator
T16307
High-Precision Air Regulator
T16629
Controllers
DVC-345 Digital Valve Controller
T11146
Stands
Lab Stand –24" [60.96 cm]
T15279
Valve Mounting Assembly for Lab Stand
T16857
Rebuild Kits
Valve Rebuild Kit
T17605

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Figure 4.
Model 485 Replacement Parts

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Table 2.
BOM for Figure 4
Item
Part #
Description
1*
T18269
Silicone O-Ring, 009
2*
T18272
Air Inlet Fitting L, 1/4" X 10-32
3
T11819
Fitting, 1/4-28 To Lock, 316 SS
4
T14204
Screw, SHCS, 6-32, 0.75, SS
5
T14217
Screw, SHCS, 8-32 X 1-1/2, 18-8
6
T14936
Spring, 0.6 OD X 0.72 WR X 2 L X K 26
7
T18261
Model 475 Valve Body
8*
T18260
Buna O-Ring, 016
9*
T18275
Silicone O-Ring, 2-006
10*
T17619
Model 485 Piston Assembly
11
T17622
Model 485 Endcap
12
T17624
Model 485 Inlet Body
13
T17625
Adapter
14
T17627
O-Ring Retainer
15*
T17830
Material Inlet Fitting L, 1/4" X 1/8 NPT, SS
16*
T18276
Needle Seat
17
T18479
Model 485 Adjusting Screw
*Parts included in Model 485 Valve Rebuild Kit T17605

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Specifications
Property
Specification
Part Numbers
T17617 Model 485 needle valve
Valve Type
Pneumatic needle valve, normally closed
Construction Materials
Body: SS, Anodized Aluminum
Wetted path: Acetal/SS
Wetted valve seals: Silicone
Operating Air Pressure
80 to 100 psi (5.5 to 6.9 bar)
Maximum Fluid Pressure
80 psi (5.51 bar)
Air Input Thread
10-32
Fluid Inlet Thread
1/8 NPT
Fluid Outlet Thread
1/4 - 28
Activation
Dymax DVC-345 valve controller or 3-way solenoid
valve
Dimensions (W x H x D)
1.13" x 5.14" x 1.13" (2.87 cm x 13.06 cm x 2.87 cm)
Weight
7.2 oz (0.2 kg)
Unit Warranty
One year
Figure 5.
Model 485 Dimensional Drawing

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Warranty
From date of purchase, Dymax Corporation offers a one-year warranty against defects
in material and workmanship on all system components with proof of purchase and
purchase date. Unauthorized repair, modification, or improper use of equipment may
void your warranty benefits. The use of aftermarket replacement parts not supplied or
approved by Dymax Corporation, will void any effective warranties and may result in
damage to the equipment.
IMPORTANT NOTE: DYMAX CORPORATION RESERVES THE RIGHT TO
INVALIDATE ANY WARRANTIES, EXPRESSED OR IMPLIED, DUE TO ANY REPAIRS
PERFORMED OR ATTEMPTED ON DYMAX EQUIPMENT WITHOUT WRITTEN
AUTHORIZATION FROM DYMAX. THOSE CORRECTIVE ACTIONS LISTED ABOVE
ARE LIMITED TO THIS AUTHORIZATION.

www.dymax.com
Americas
USA |+1.860.482.1010 |[e-mail]
Europe
Germany |+49 611.962.7900 |[e-mail]
Ireland |+353 21.237.3016 |[e-mail]
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Singapore |+65.67522887 |[email protected]
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Hong Kong |+852.2460.7038 |[e-mail]
Korea |+82.31.608.3434 |[email protected]
© 2017-2020 Dymax Corporation. All rights reserved. All trademarks in this guide, except where noted, are the property of, or used under license by Dymax Corporation,
U.S.A.
The data contained in this bulletin is of a general nature and is based on laboratory test conditions. Dymax Europe GmbH does not warrant the data contained in this
bulletin. Any warranty applicable to products, its application and use is strictly limited to that contained in Dymax Europe GmbH’s General Terms and Conditions of Sale
published on our website. Dymax Europe GmbH does not assume any responsibility for test or performance results obtained by users. It is the user’s responsibility to determine
the suitability for the product application and purposes and the suitability for use in the user’s intended manufacturing apparatus and methods. The user should adopt such
precautions and use guidelines as may be reasonably advisable or necessary for the protection of property and persons. Nothing in this bulletin shall act as a representation that
the product use or application will not infringe a patent owned by someone other than Dymax Corporation or act as a grant of license under any Dymax Corporation Patent.
Dymax Europe GmbH recommends that each user adequately test its proposed use and application of the products before actual repetitive use, using the data contained in this
bulletin as a general guide. T17629 MAN053EU 11/15/2018