ITEM NAME:4 Pcs 3mm Inside Diameter Hard Plastic One-way Check Valve Dark Blue S3F2 4 Pcs 3mm Inside Diameter Hard Plastic One-way Check Valve Dark Blue S3F2 Product Name: One-way Valve Flow Medium: Air, Liquid Main Material: Hard Plastic; Color: Dark Blue Length: 36 mm/ 1.4"; Connector Diameter: 4mm/ 0.16"; External Diameter: 19mm/ 0.7" Preventing the flow back, protect the pump and motor, and reverse the container mediu return. How to use: insert the one-way valve into the hose, while the opposite end of the valve connects to the hose that leads to the boost gauge. Package: 4 x Quick Exhaust Valve Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
