Fangrui Product Details Precision Dispensing Valve: My-228 Back-suction Single-liquid Valve, Precision Dispensing, Clean Glue Cut-off, No Drawing Precise Glue Quantity Fine-tuning Nut: According To The Required Glue Output Size, Twist The Fine-tuning Nut To Achieve Precise Adjustment Of Glue Quantity And High-precision Dispensing Effect Improve The Precision Dispensing Of Back-suction Type: Back-suction Type Dispensing, Precise Glue Output, Clean Glue Cut-off, No Drawing Or Dripping After Long-term Use Matched With The Dispensing Machine Pressure To Form A Dispensing Set: With The Three- Machine, It Can Be Used For Dispensing, Drawing Lines, Coating, And Irregular Routing Dispensing Process Suitable For A Variety Of Single-component Glues To Meet The Needs Of Dispensing Operations In Multiple Fields Colour:as Shown Material:aluminum Stainless Steel Package Contents: 1 * Dispensing Valve Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The It