775 型分配阀，带回吸和流量控制

The Model 775 is a pneumatically operated spool valve that is designed to accurately dispense a variety of medium- to high-viscosity fluids. The valve's 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 valve's 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.