The amount of gas flow aid JLZ25 position when the gas nozzle suitable for quick installation or hoppers, silos inside untouchable, can be installed in the hopper, silo outside contact with the material: Name: JL25 aid flow gas nozzle Product Category: JLZ25 U025 Product Information U025 aid can be determined by the number of gas nozzle flow. The product is easy to install and remove.