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Summary of Contents for dymax 828
- Page 1 Model 828 Disposable Fluid Path Dispensing Valve User Guide...
- Page 2 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.
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Page 3: Table Of Contents
General Safety Considerations .........5 Specific Safety Considerations .........5 Product Overview ..........6 Description of the Model 828 Dispensing Valve ..6 Special Features and Benefits of the Model 828 ..7 Over-Pinch Adjustment ..........7 Disposable Fluid Path ..........7 Suck-Back Feature .............7 Assembly and Setup ........... 8 Unpacking and Inspecting Your Shipment ....8... -
Page 4: Introduction
Introduction This guide describes how to use the Dymax Model 828 dispensing valve. Sections in this guide describe how to assemble, use, and maintain the dispensing valve safely and efficiently. Intended Audience Dymax prepared this user guide for experienced process engineers, maintenance technicians, and manufacturing personnel. -
Page 5: Safety
To learn about the safe handling and use of dispensing fluids, obtain and read the SDS for each fluid before using the fluid. Dymax includes an SDS with each adhesive sold. SDS for Dymax products can be requested on the Dymax website. -
Page 6: Product Overview
Product Overview Description of the Model 828 Dispensing Valve The Model 828 pinch valve is a normally open, disposable fluid path valve designed to provide larger flow rates while still maintaining precise control over flow rate. This dual- piston pinch valve works great with many low-to-medium viscosity materials and features a suck-back control so it can handle stringy and tacky materials with no mess. -
Page 7: Special Features And Benefits Of The Model 828
Suck-Back Feature The suck-back feature on the 828 valve allows for the clean shutoff of stringy and tacky materials and prevents the formation of a droplet at the end of the dispense nozzle. The U S E R G U I D E... -
Page 8: Assembly And Setup
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. -
Page 9: Tubing Installation
D - Socket Head Cap Screws Note: The Model 828 is not supplied with tubing. Various tubing sizes and materials (including polyethylene, polyurethane, PVC, and silicone) are available for order through Dymax. This valve is compatible with a maximum tubing size of 0.375" [9.53 mm] OD. -
Page 10: Mounting
Air-In Port (Normally Open) Valve Adjustments Adjusting Material Flow To adjust the flow of the Model 828 valve, turn the Pinch-Piston Flow Adjustment Screw (Figure 5, A) clockwise to decrease material flow or counterclockwise to increase material flow. U S E R G U I D E... - Page 11 Adjusting Suck Back To adjust the suck back of the Model 828 valve, turn the Suck-Back Adjustment Screw (Figure 5, B) clockwise to decrease suck back or counterclockwise to increase suck back. Figure 5. Adjustment Controls A – Pinch-Piston Flow B –...
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Page 12: Troubleshooting
Troubleshooting Table 1. Troubleshooting Chart for Model 828 Dispensing Valve2 Problem Possible Cause Corrective Action The supply air pressure is Increase the supply air too low pressure The valve does not dispense Material is cured in the tip Disassemble and clean the tip... -
Page 13: Spare Parts And Accessories
Spare Parts and Accessories Figure 7. Model 828 Replacement Parts Part Item Description Quantity Number T15239 Model Tube Support, 0.375 OD T14178 Socket Head Cap Screw, 8-32 x 0.75 T12522 Split Lock Washer, 8, SS T15236 Model Valve Body T15235... -
Page 14: Options/Accessories
Tubing & Fittings Tube Support, Entire Assembly with Luer-Lock Fitting, T15225 0.375" [0.95 cm] OD Female Luer-Lock Fitting, Push In T11978 Misc. Model 828 Wrench Set T16661 Rebuild Kits Valve Rebuild Kit T16662 Specifications Figure 8. Model 828 Dimensional Drawing... -
Page 15: Warranty
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. - Page 16 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.
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