The main body adopts a segmented design, with a typical model (such as CS-32Y) consisting of a pump cylinder, piston assembly, and inlet/outlet oil pipes. The pump cylinder diameter reaches 65mm, and a standard 25mm diameter hose is included, which can be extended to 2000mm to meet different depth requirements. Wetted parts can be made of corrosion-resistant materials such as PP and ABS, while some high-end models use a stainless steel and aluminum alloy composite structure to enhance durability. The sealing system employs multi-layer oil seal technology and can withstand a suction vacuum of 5 meters of water column.
Furthermore, for specific applications such as liquefied petroleum gas storage and distribution stations, there are dedicated design models (such as the SB02 truck-mounted hand-cranked oil pump and the SB03 station hand-cranked oil pump), whose structure uses corrosion-resistant materials to adapt to special operational requirements.
