Flexi Hinge Double Disk Blower Check Valves Model 518 Full Port, Low Pressure Wafer Style, Cast Iron Body, Aluminum Internals, ISO Certified Drill and Driver Bits Part Material Motor Housing Cast SJ3521 YW 3XL Part Material Motor Housing Cast Iron Pump Volute Cast Iron Impeller Thermoplastic Vortex Shaft Steel Handle Stainless Steel Fasteners Stainless Steel O Rings Buna N Mechanical Seal Carbon Ceramic Seal Body Anodized Steel Seal Spring Stainless Steel Seal Bellows Buna N Upper Bearing Cast Iron Sleeve Lower Bearing Single Row Ball Bearing Lubrication Dielectric Oil Coating Water Reducible Enamel Applications Use this case to keep your REED pipe tools organized and your beveling kit together wherever your work takes you Unique Seatless Design: Eliminates metal to metal contact to reduce wear and extend valve lifespan Flexi Hinge Double Disk Blower Check Valves Model 518 – Wafer Style Innovation for Maximum Flow and Efficiency