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Text version of the page
VELANAPI600 GLOBEVALVES
FLATANDCONICALSEATS
FLATSEATCONICALSEAT● Machining, lapping to close tolerances is easy.
● Line contact seal.
● Flatness tolerance easy to control.
● Contact pressure increase by 1.55 with same stems and yokes.
● Area contact wide seat.
● Disc is guided by the mating surface of the seat.
● Seat has greater elasticity.
● Hard thrust pad prevents galling.
● Lower closing torques.
● Faster maintenance in-line. Flat seating faces canbe lapped and checked for flatness easier.
● Recommended for high pressure-temperature.
VELAN API 600 SWINGCHECKVALVES
● Cage unit design with no penetration of body prevents: a) Possibility of leakage with gasketed or packed hinge pin. b) Possibility of pin ejection.● All parts are accessible from the top for easy servicing.
● Welded-in seat is Stellite 6 faced.
● Disc is free to rotate to prevent localized wear.
● Ground and lapped seating surfaces. 17