spring one way return valve 1, manufacturer 2, high quality with lowest price 3, fast delivery 4, free sample spring one way return valve SCV018CVLproduct detailbody material: PPdiaphragm material: VITONopening pressure: < 1.0KP Aback pressure: > 0.3MPA Application industrial inkjetwide inkjet printers testergasoline engine Check valves are used to prevent flow of fluid (gas or liquid) in one ...