Model 828

Model 828 Open Disposable Fluid Path Dispensing Valve

The Model 828 normally open disposable fluid path valve is designed to provide larger flow rates while still maintaining precise control over material flow rate. This dual-piston pinch valve can be used with many low-to-high viscosity materials and features a suck-back control so it can handle stringy and tacky materials with no mess.

The valve also features a disposable fluid path which carries materials from the material reservoir to the dispense tip. Fluids are sealed within the fluid path, preventing contact with the valve's inner components and ensuring a contaminate-free dispensing process. The fluid path is easy to replace and requires a minimum clean up, allowing for rapid material changeover. The standard Model 828 valve is supplied with black polyethylene tubing but fluid paths of varying materials and sizes can be ordered for optimum material compatibility. This valve is compatible with a maximum tubing size of 0.375 in [9.53 mm] OD.

The Model 828 valve can be integrated into an automated dispensing system and controlled with a four-way solenoid valve or paired with the Dymax DVC-345 Digital Valve Controller and a material reservoir to create a bench-top dispensing system.



  • Disposable fluid path that carries materials from the material reservoir to the dispense tip
  • Fluids remain contaminate-free during dispensing
  • Prevents air entrapment during the dispensing process
  • Easy product changeover with minimal clean up
  • Fluid never comes in contact with the valve’s inner components, reducing valve maintenance and extending the life of the valve
  • Over-pinch adjustment prevents tubing damage and millions of cycle before replacement
  • Adjustable suck-back control eliminates drooling and film over nozzle
  • Drop-free dispense when dispensing thin or stringy materials
  • Dispenses from pressurized cartridges, bottles, and pails (requires appropriate reservoir hardware)
  • Lightweight, easy to handle and mount in automated or bench-top systems



System Specifications

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Property Specifications
Valve type Pinch Valve with Disposable Fluid Path
Construction materials Anodized Aluminum
Operating air pressure 75-100 psi [5 – 7 bar]
Activation Valve controller or 4-way Solenoid Valve
Maximum inlet fluid pressure Tubing Dependent; 100 psi [7 bar] Typical
Maximum operating temperature 150°F [65°C]
Air inlet Accepts 0.156″ [0.40 cm] OD, others available
Dimensions (W x H x D) 2.98 in x 2.91 in x 1.50 in [7.57 cm x 7.39 cm x 3.81 cm]
Weight 0.5 lb. [0.23 kg]
Warranty 1 Year From Purchase Date

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Model 828 Valve Rebuild Kit Animation

Follow along with this animation and learn how to easily maintenance your Model 828 pinch valve. Using step by step instructions, you'll learn how to disassemble and reassemble your Model 828 dispensing valve using the our Dymax Model 828 rebuild kit.

Part Numbers

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Model 828 Valve with 0.25″ [0.63 cm] OD polyethylene tubing

Global (CE Marked)


Clearance - High-precision air regulator for fluid pressure

Limited quantities, please submit RFQ for pricing and availability. 

Global (CE Marked)


DVC-345 valve controller

Global (CE Marked)


Black Polyethylene Tubing, 0.375″ [0.95 cm] OD

Global (CE Marked)


Lab stand – 24″ [60.96 cm]

Global (CE Marked)


Lab stand – 8″ [20.32 cm] with mounting rods

Global (CE Marked)

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