High-performance Metal Triple Eccentric Butterfly Valve Factory

• Carbon Steel

• Stainless Steel

• Special steel and alloy upon request temperature

LAMELLAR RING

Lamellar ring fixed on the butterfly is made with the assembly of severalstainless steel sheets between which are inserted several graphite sheets.

The external shape**of this ring is truncated cone shape and oblique.It represents its tightness range.The tightness range of the massive seat instainless steel has a truncatedcone shape and oblique shapebut internal.

During the closure of the valve,the lamellar ring's external shape perfectlymatches the seat's internal shape to ensure the complete tightnessbetween the two pieces.

*various classes possible depending on operating conditions

*specific for msobtainedby machining

Advantages

From the beginning of the opening,all the points of the external range of thelamellar rings quit at the same time the seats range with a positive angleavoiding any friction ring/seat,

• No risk of jamming

• No retention area

• No resisting to rque during the opening due tothe gasket/seat friction

• Possible flow regulation from the first opening degrees.

IVALDISCVALVE(VHP)

Third eccentricity due to the cone inclination enable to obtain clearing angle sduring the opening or meshing angles during the closing superior to sticking angles [angles made by TT and TS].The eccentri city2 is verylower.

Advantages

• The jamming risk is eliminated,lt is no more necessary to use the ring's distortion to obtain the Metal/Metal contact.Metal solid rings are possible..

• No friction ,no usury

• No retention area.

• The mechanical stop is directly ensured by the seat's reaction [no risk of deregulation of the closed position].Mechanical stop is no more necessary.