Screw Ball Check Valve
Brief Introduction Ball check valves are often very small, simple, and cheap. They are commonly used in liquid or gel mini pump dispenser spigots, spray devices, some rubber bulbs for pumping air, etc., manual air pumps and some other pumps, and refillable dispensing syringes. Although the balls are most often made of metal, they can be made of other materials .
Screw Female Thread Ball Check Valve