1.SNS,a leading manufacturer in China 2.Valve,Foot Valve,Control Valve(ST Series)with high quality 3.Many series Valve,Foot Valve,Control ValveST Series(ST-402)Features:1)Fluid applied: Air2)Working voltage range:0-8kgsf/cm²3)Working temp.range: 0-70°C4)Adapter diameter:1/4PT Valve,Foot Valve,Control Valve(ST Series)