Manual Water Pump,For 3,5 gallon bottle( 58mm neck size) New PP material Manual ... push down on the top of the pump. Why use SKL Manual Water Pump? 1.No batteries required. 2.No ... shed, cabin, camping, etc. 4.Dust-proof outlet. 5.Suction tube with adjustable length to suit different vessel. 6 ... of such kind pumps in China,both hand pump and electronic pump,for 5 gallon bottle or small bottle,like 5Li,8li ...