Dymax 400 User manual

Model 400 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 400 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..........................................................................5
Specific Safety Considerations ..........................................................................5
Product Overview................................................................................................. 5 
Description of the Model 400 Dispensing Valve ...............................................5
Assembly and Setup ............................................................................................. 7 
Unpacking and Inspecting Your Shipment ........................................................7
Parts Included in the Model 400 Dispensing Valve ...........................................7
Operation............................................................................................................. 9 
Start Up.............................................................................................................9
Dispense............................................................................................................9
Adjusting Material Flow ..................................................................................10 
Shutdown........................................................................................................10 
Cleaning and Maintenance................................................................................. 10 
Replacing the Needle Seat ..............................................................................10 
Troubleshooting................................................................................................. 11 
Spare Parts and Accessories ............................................................................... 12 
Specifications ..................................................................................................... 14 
Index.................................................................................................................. 15 

Model 400 Dispensing Valve User Guide

Introduction

Introduction to the User Guide

This guide describes how to assemble, use, and maintain the Dymax Model 400

handheld 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 [email protected]. 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.

Model 400 Dispensing Valve User Guide

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 13).

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 400 Dispensing Valve

The Model 400 handheld, pneumatic needle valve is designed to deliver precise volumes

of low- to medium-viscosity fluids. Air pressure through the valve retracts the needle

assembly from the seat allowing fluid to flow from the valve fluid inlet to the dispensing

tip. When the air pressure is eliminated, the spring to returns the needle back to its

position, closing the fluid path and ending the dispense cycle. The valve also features a

flow adjustment knob which allows for fine-tuning of the dispense volume, ensuring

precise and consistent deposits. The Model 400 is ideally suited for a wide range of

applications including dispensing cyanoacrylates, inks, and UV light-curable adhesives.

Model 400 Dispensing Valve User Guide

Figure 1. Model 400 Component Diagram

Flow Adjustment Knob

Air In

Quick Connect Fitting,

Fits 5/32" [4 mm] Tubing

Material In

Fits 1/4" [6.35 mm] Tubing

Luer Adapter

Model 400 Dispensing Valve User Guide

Assembly and Setup

Unpacking and Inspecting Your Shipment

When your Model 400 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 400 Dispensing Valve

■Model 400 needle valve

■Model 400 user guide

■Assorted dispensing tip kit

Figure 2. Model 400 Handheld Needle Valve Unpacking Diagram

Model 400 Dispensing Valve User Guide

System Interconnect

Air

The Model 400 needle valve requires a Model 345 valve controller or a 2-position, 4-way

air solenoid valve to actuate the air section. The valve should be operated with clean,

dry air between 80-100 psi [5.5 - 7 bar]. One #10-32 threaded air port is located on the

valve. This port is used to open the valve when air pressure is applied and close the

valve when air pressure is relieved. A quick-connect air fitting is typically supplied with

the Model 400 to fit 0.16" [4 mm] tubing.

Fluid

The Model 400 needle valve requires a material reservoir or pressure tank to draw

material from. The material reservoir should be connected to the Model 400 valve

through the 1/8" [3.2 mm] NPT port located on the valve.

Figure 2. Valve Interconnect Diagram

Valve Controller or

Solenoid Valve

(DVC-345 Shown)

Air Filter Regulator

with Dump Valve

(Recommended)

Material Reservoir

(20 oz Cartridge

Reservoir Shown)

Material In

Air In

Model 400 Valve

Air Supply

Precision Air Regulator

(Recommended)

Model 400 Dispensing Valve User Guide

Operation

Start Up

At the beginning of the day or a shift, it is necessary to properly start the Model 400 to

begin normal operation. To start the dispensing valve, follow the instructions below.

1. Apply air pressure by turning on the pressure to the Controller.

2. Remove the Luer Lock Plug from the Luer Adapter and discard.

3. Place a new Dispense Tip onto the Luer Adapter.

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.

Note: Operating air pressure must be applied before turning on fluid pressure.

Dispense

If any problems are encountered, refer to the troubleshooting section of this manual or

call Dymax Customer Support.

1. Plumb the valve as outlined in the setup procedures.

2. Regulate the air pressure to between 80-100 psi (5.5 –7 bar).

3. Pressurize the Fluid Delivery System.

4. Cycle the valve to the open position to purge. Fluid should begin to dispense

from the tip of the valve.

5. Check the Fluid Connection for leaks. If the valve is leaking or dripping, refer

to the troubleshooting section of this manual.

6. Adjust the material pressure until the desired flow rate is achieved.

7. Thread a Dispense Tip onto the Luer Adapter of the Valve to fine tune the flow

rate of the fluid.

Note: Using a smaller gauge Dispense Tip will reduce the flow rate while using

a larger gauge Dispense Tip will increase the flow rate.

Model 400 Dispensing Valve User Guide

Adjusting Material Flow

Material flow can be easily adjusted by turning the Flow Adjustment Knob on the top of

the valve. To reduce material flow, turn the Flow Adjustment Knob clockwise. To

increase material flow, turn the Flow Adjustment Knob counterclockwise.

Figure 3. Material Flow Adjustment

Shutdown

At the end of the day or shift, it is necessary to shut down the Model 400 dispensing

system properly in order to keep material from curing inside the dispensing valve.

1. Remove the disposable Dispense Tip from the Luer Adapter and discard.

2. Thread a Luer Lock Plug onto the Luer Adapter.

3. Relieve fluid pressure on the valve by turning off air pressure at the Material

Reservoir.

4. Relieve the air pressure operating the valve by turning off the air pressure to

the Controller.

Cleaning and Maintenance

Replacing the Needle Seat

1. Unthread the Luer Adapter from the valve.

2. Remove the Needle Seat O-Ring.

3. Insert a new O-Ring.

4. Reinstall the Luer Adapter on the valve.

Model 400 Dispensing Valve User Guide

Troubleshooting

Table 1. Troubleshooting Chart for Model 400 Dispensing Valve

Problem

Possible Cause

Corrective Action

Valve does not

dispense anything

The fluid pressure is too

low

Increase the fluid pressure above 15 psi

Material is cured in the

fluid section

Disassemble and clean the valve

Air pressure is too low

Adjust air pressure accordingly

Dispense rate too

fast

The fluid pressure is set

too high

Decrease the fluid pressure

The dispense tip gauge is

too large

Replace the dispense tip with a smaller

size tip

Dispense rate too

slow

The fluid pressure is set

too low

Increase the fluid pressure

The dispense tip gauge is

too small

Replace the dispense tip with a larger

gauge

Air bubbles in

fluid

The valve is not properly

purged

Point the valve up and cycle it until

any air bubbles are removed

There is a problem with

the material reservoir and

fluid delivery system

Diagnose and repair

Fluid pressure is too high

Adjust fluid pressure accordingly

Material leaks

from Valve Tip

Air bubbles are trapped in

the fluid section of the

body or in the dispense tip

Point the valve up and cycle it until

any air bubbles are removed

Model 400 Dispensing Valve User Guide

Spare Parts and Accessories

Item

Part Number

Air Regulators

Air Filter Regulator with Dump Valve

T16307

High-Precision Air Regulator

T16629

Controllers

DVC-345 Digital Valve Controller

T11146

Stands

Valve Stand

T15466

Rebuild Kits

Valve Rebuild Kit

T17305

Model 400 Dispensing Valve User Guide

Figure 4. Model 400 Replacement Parts

Notes:

1. Must use Molykote 55 or equivalent on items 10 & 11.

2. Apply thread locker ANL-71 to item 3.

Item

Part

Number

Description

Qty.

T11819

Fitting, 1/4-28 to Lock,

316 SS

T14204

SHC Screw, 6-32, 0.75, SS

T14855

Set Screw, 4-40 X 1/8, 18-8

T17388

Model 400 Shaft

T17390

Model 400 Tip

T17391

Model 400 Piston

T17387

Model 400 Body

T17392

Model 400 Washer

T17395

Model 400 Tube

10*

T17396

O-Ring, Buna, 2-109

11*

T18275

O-Ring, Silicone, 2-006

12*

T17398

Retaining Ring, Int, 1/5 Bore

13*

T18200

Spring Comp., .48 Dia X .50

T17604

Grip

15*

T17628

Teflon O-Ring, -004

T17830

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

SST

T17401

Model 400 Adjustable Cap

T11711

Fitting, ¼ OD Tube, 10-32,

Elbow

T12454

Locknut, 1/4-80, Brass

T17402

Bushing, 1/4-80 X .57, Press

T17403

Adjustment Screw,

1/4-80 X 1

*Parts included in Model 400 Valve Rebuild Kit

T17305

Model 400 Dispensing Valve User Guide

Specifications

Property

Specification

Part Numbers

T17384

Valve Type

Pneumatic needle valve, normally closed

Wetted Materials

Silicone, SS, Delrin®, Teflon®

Operating Air Pressure

80-100 psi (5.5 –7 bar)

Maximum Fluid

Pressure

80 psi (5.5 bar)

Activation

DVC-345 controller or 2-position, 4-way solenoid valve

Dimensions (W x H x D)

7.09 in x 1.25 in

Weight

0.35 lbs (0.16 kg)

Unit Warranty

One year from purchase

Figure 5. Model 400 Dimensional Drawing

Model 400 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.

Index

Air Connections, 8

Assembly and Setup, 7

Contact Information, 4

Dimensions, 14

Flow Adjustment, 10

Fluid Connections, 8

Help, 4

Optional Equipment, 11

Parts Included, 7

Product Overview, 5

Safety, 4

Preventing Injection Injury, 5

Using Safe Operating Pressures, 5

Spare Parts and Accessories, 11

Specifications, 14

System Interconnect, 8

Troubleshooting, 11

Warranty, 15

Delrin and Teflon are registered trademarks of DuPont.

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