Model 775 Dispensing Valve

The Model 775 is a pneumatically operated spool valve that is designed to accurately dispense a variety of medium- to high-viscosity fluids. The valves accuracy comes from two main features, its suck-back control and adjustable flow control. The suck-back feature greatly increases accuracy and repeatability when dispensing materials. Having control over the amount of suck-back assures consistent, stringless dispensing of tackier materials, and prevents droplets from remaining on the dispense nozzle when using lower viscosity materials. The valves other key feature, adjustable flow control, gives users the ability to have complete control over the amount of material dispensed. The 775 valve can dispense volumes as little as 0.01 mL and as large as 50 mL.

The Model 775 dispensing valve is ideally suited to automated applications, but can also be paired with the Dymax DVC-345 Digital Valve Controller and a material reservoir to create a bench-top dispensing system.


Part Numbers:
T15853 Model 775 with Teflon® seals, 1/4″ NPT
T15855 Model 775 with Teflon seals, 1/4 – 28 NPT
T15859 Model 775 with Viton® seals, 1/4″ NPT

Valve Type:
Modified spool valve with suck-back controls

Construction Materials:
Stainless steel, hard-coated and anodized aluminum, Teflon, Viton

Operating Air Pressure
60-80 psi [4.14 – 5.51 bar]

Valve controller or 3-way solenoid valve

Maximum Fluid Pressure:
700 psi (48 bar) with Teflon seals
300 psi (21 bar) with Viton seals

Maximum Operating Temperature
400°F (204°C)

Free Flow Orifice
0.22″ diameter

Dimensions (W x H x D)
1.25″ x 5.42″ x 1.25″ [3.18 cm x 13.77 cm x 3.18 cm]

Weight: 14 oz [397 g]

Unit Warranty: 1 year from purchase date

Features & Benefits

  • Adjustable suck-back provides a crisp, clean shut-off of materials eliminating droplets and skinning-over at the end of the dispense tip
  • Available with Teflon® or Viton® seals for compatibility with a larger variety of fluids
  • Adjustable flow control with lock provides accurate dispensing in shots from 0.01 mL to 50 mL. The lock also prevents drifting or tampering.
  • Able to dispense from pressurized cartridges, bottles, and pails (requires appropriate reservoir hardware) for compatibility with most standard fluid packages and delivery systems
  • Lightweight so it’s easy to handle and mount in automated or bench-top systems

Images & Videos

Model 775 Series Spool Valve

Model 775 Series Spool Valve


Model 775 Dispensing Valve
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