Dymax 485 User manual

Model 485 Dispensing Valve User Guide

About Dymax

UV/Visible 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 fluid

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.

 
 
Model 485 Dispensing Valve User Guide 
3 
Contents 
Contents............................................................................................................... 3 
Introduction ......................................................................................................... 4 
Introduction to the User Guide .........................................................................4
Where to Get Help ............................................................................................4
Safety................................................................................................................... 4 
General Safety Considerations..........................................................................4
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 ..........................................................................................................7
System Interconnect .........................................................................................8
Adjusting Material Flow ....................................................................................9
Operating the Dispensing Valve............................................................................ 9 
Operation ..........................................................................................................9
Shutdown..........................................................................................................9
Maintenance and Cleaning ................................................................................. 10 
General............................................................................................................10 
Troubleshooting ................................................................................................. 10 
Spare Parts and Accessories ............................................................................... 11 
Options/Accessories........................................................................................11 
Specifications ..................................................................................................... 14 
Warranty............................................................................................................ 15 

Model 485 Dispensing Valve User Guide

Introduction

Introduction to the User Guide

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

Dymax Customer Support and Application Engineering teams are available in the United

States, Monday through Friday, from 8:00 a.m. to 5:30 p.m. Eastern Standard Time. You

can also email Dymax at info@dymax.com. Contact information for additional Dymax

locations can be found on the back cover of this user guide.

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.

General Safety Considerations

All users of Dymax fluid dispensing equipment should read and understand the user

guide before assembling and using the equipment.

Model 485 Dispensing Valve User Guide

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.

Model 485 Dispensing Valve User Guide

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

Model 485 Dispensing Valve User Guide

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 in the Model 485 Dispensing Valve

■Model 485 needle valve

■Assorted dispense tip kit

■Model 485 dispensing valve user guide

Figure 2. Model 485 Needle Valve Unpacking Diagram

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).

Model 485 Dispensing Valve User Guide

There are two 8-32 UNC holes on the dispense valve for mounting purposes (Figure 5).

System Interconnect

Figure 3. Valve Interconnect Diagram

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.

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

Model 485 Dispensing Valve User Guide

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.

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.

Model 485 Dispensing Valve User Guide

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.

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

Model 485 Dispensing Valve User Guide

Spare Parts and Accessories

Options/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

Model 485 Dispensing Valve User Guide

Figure 4. Model 485 Replacement Parts

Model 485 Dispensing Valve User Guide

Table 2. BOM for Figure 4

Item

Part #

Description

T10096

Silicone O-Ring, 009

T18272

Fitting L, 1/4" X 10-32

T18273

Fitting, 1/4-28 To Lock, 316 SS

T14204

Screw, SHCS, 6-32, 0.75, SS

T14217

Screw, SHCS, 8-32 X 1-1/2, 18-8

T14936

Spring, 0.6 OD X 0.72 WR X 2 L X K 26

T18261

Model 475 Valve Body

T18260

Buna O-Ring, 016

T17397

Silicone O-Ring, 2-006

10*

T17619

Model 485 Piston Assembly

T17622

Model 485 Endcap

T17624

Model 485 Inlet Body

T17625

Adapter

T17627

O-Ring Retainer

15*

T17830

Fitting L, 1/4" X 1/8 NPT, SS

16*

T18276

Needle Seat

T18479

Model 485 Adjusting Screw

*Parts included in Model 485 Valve Rebuild Kit T17605

Model 485 Dispensing Valve User Guide

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

Model 485 Dispensing Valve User Guide

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.

U.S.A.

Please note that most dispensing 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 Dymax standard Conditions of Sale published on our website. 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