If you are going to buy cheap,Website:http://www.airkir.com, newest and high-quality hand-pull valve products from one productive factory, Fenghua Airkir Pneumatic Equipment Co.,Ltd is one of the professional hand-pull valve manufacturers in China.We have various different valves like solenoid valves, pneumatic valves, mechanical valves, etc. Aboutsolenoid valve,there are 5/2,5/3,3/2,2/2 with different connection ports,pressure,temperature,medium,etc. The material can be aluminium, brass, stainless steel and engineering plastic, which are widely usedifferent conditions together with control elements.