1. 2W Series Two-Posifion Two-way 2. Direct Drive Solenoid Valve 3. Size 08:G1/4 4. Pressure:Air,Water,Oil,Gas,0~0.7Mpa It is one of the oldest type valves, which is made of two kinds of material, steel and brass.Both are the normally closed.This series are the most popular valves used for many conditions especially in the water environment.ModelQ22XD-1.2 Q22XD-2 Q22XD-3 Q23XD--L1.2Q23XD-L2Q23XD- ...