1.Material:pp (check valve) 2.Seal rubber:viton 3.Size: for (3/16'')5mm ID diameter hose 4.Color:semitransparent Product name: small plastic check valve to prevent water and oil backflow     Product details: 1.Material:pp (check valve)2.Seal rubber:viton 3.Size: for (3/16’’)5mm ID diameter hose 4.Color:semitransparent 5.Code NO.: AQTCV05 opening pressure < 1.0KP Aback pressure: > 0.3MPA Major Application1.industrial inkjet 2.wide inkjet printers 3.tester 4.gasoline engine 5.Used for ozone with water Function: 1.Prevents damage to equipment, pumps, and flow systems by preventing backflow 2.Tubing barbed check valves are for an inert high purity smooth and clear flow path. 3.Use with liquids and gases for pressure or vacuum applications. 4.The check valves has a low pressure drop and can be specified with a wide variety of       cracking pressures 

plastic one-way valve,check valve,non-return valve