GL80 Screw Cap with Pressure Gauge, Quick Connect Air Hose Fitting and Adjustable Switch ,Blue Thread GL80 Bottle Cap for Monitor Pressure( -0.1-0MPa/-1-0KG)

GL80 thread design:With GL80 thread design, which can be perfectly matched with various GL80 bottle tops to ensure the sealing and stability. Use for:Sample bottle that uses a standard, GL80 screw cap With pressure gauge:The GL80 thread cap with graduated pressure gauge, it will easier to read and control the pressure inside the bottle.It has 2 types( -0.1-0MPa/-1-0KG) of scales to meet your needs for different scales With quick connect: It can be easy to connect to 6mm air hose to input or extract gases Adjustable switch: There is an adjustable switch to flexibly control the pressure inside the bottle according to the need, which is convenient for experimental operation and result control