BODY,DISC&COVER: DUCTILE IRON,CAST IRON OR CAST STEEL. SEAT RING: STAINLESS STEEL OR BRONZE DISC RING: STAINLESS STEEL OR BRONZE *Longer Laying Length:Having the disc"tilt"in the media gives the valve a longer laying length or face-to-face dimension than other valves.This extended length provides a very smooth body and disc contour,thus reducing the turbulence common to other designs. *Increased Flow Area:With a flow area that is at least 40% greater than the nominal valve size,the tilting disc check valve has a much lower head loss than a conventional swing check valve.It has three times higher flow in many cases. *Field replaceable seat:The Tilting disc chec valve is manufactured with ease of field maintenance in mind.the seat is replaceable in the field without the need for special tools or equipment,thus reducing valve down time. *External position Indicator:directly attached to the disc itself through one pivot shaft,this indicator serves as an easy and positive reference for detemining whether the valve is open or closed. *dual Inspection Ports:An inspection port is located on the top and bottom side of the seat for examination of normal wear.It also serves as the mounting point for optional dashpots. *dasphots:Designed to control the opening and closing speeds of the valve,optional dasphots help climinate line surges and valve wear.Available with top and bottom mountings,they are field adjustable and can often be added later.Both utilize a high quality hydraulic piston cylinder to control disc movement.