The manual pump, with its simple mechanical displacement principle, cleverly realizes the siphon and movement of the fluid. The core mechanism is to operate the piston mechanism in the sealing chamber of the pump through the drive of the handle. During the intake stroke, the lever acts like a magician’s hand, subtly pulling the piston through the inlet port and the inlet check valve, drawing in the fluid. Then, during the discharge stroke, the lever works its magic again, pushing the piston, closing the inlet and forcing fluid out of the discharge port with the help of the outlet check valve. This reciprocating motion, as natural as breathing, creates powerful suction and compression forces that precisely “pump” the fluid from the supply source to the target container. Each handle operation of the operator is like injecting new vitality into this force, and the cycle is repeated and never stops. Material…

Self-sealing refueling guns for high-speed truck, bus and fleet service If you operate a full-service gas station, fuel your own fleet, or manage a cartridge station, use a low-cost, long-life and durable high-speed refueling gun to increase your productivity. Smooth, flat shape: reduces the occurrence of diesel foam and false closure. Double lift valve: easy to open the fuel gun under high pressure. The compound main valve and return valve make the structure more compact, small and beautiful appearance, reduce the pressure loss link, and improve the flow rate. Accurate flow control: Users can fill their tanks with the exact amount they need, making it easy to accurately stop the fuel supply. Replaceable 360° adapter: The user can easily replace the connector according to the need, and can prevent the hose from lacing. Easy full-service normally open holding rack: One-hand operation allows customers to easily and easily set three different…