Withdrawal system

Quantitative liquid discharge device capable of discharging liquid in container at present liquid level

Self-actuating drainage device and method of operation

Liquid storage container

Pump coupler

Socket structure

Serial siphon valves for fluidic or microfluidic devices

Automatic draining apparatus of condensation

Siphonable check valve and method of making same

Assembling a siphonable filler tube with a check valve on a fuel tank

Apparatus and method for a cycle siphon using a float operated magnetically controlling pivoting float valve for minimizing the build-up of gases