JH-20B self sealing oil gun

date：[2011-12-24] pk_hits：

JH-20B self sealing oil gun nozzle integrated design avoids oil leakage caused by nozzle loosening during long-term refueling; The main valve adopts a two-stage seal to avoid difficulty in firing due to high oil pressure; When refueling, one hand can complete three levels of control, making it effortless.