Features:

Leflow are providing 3-offset butterfly valve with Wafer, Lug and Double Flange type, The seat can be 13Cr, Stellite and other hard metal, The filler of disc gasket can be SS304,SS316, Monel and other alloys. Bidirectional seal can be reached on request.

Triple offset uses three separate offsets to achieve a bubble-tight. One of the offsets is the location of the valve shaft relative to the centerline of the bore. Another offset is between the centerline of the disc/seat sealing surface and the shaft. Then, the third offset is the geometry of the seating surface, which creates a cone shape of the disc and seat.

The structure gives valve following key benefits:

1.Eccentric structure ensures low operating torques with zero leakage performance.

2.Low moments are obtained by decreasing the friction through self-lubricating bushings.

3.high temperature and pressure adaptability.

4.Reduces the pressure loss through the disc designed in accordance with the direction of flow

5.Sealing gaskets made of Graphite filled with Stainless steel, which can achieve better sealing and long time use.

6.Retaining ring is assembled to the disc with imbus bolts, the disc is protected against corrosion by placing o-rings under the bolts.

7.simple to operate and easy to maintain

8.The seat can be several types of hard material, wide application and long time life.

FEATURES & BENEFITS

Valve Size: DN40 – DN2000. 

Pressure Rating: PN16-PN160, Class 150~Class900

Material: WCB,LCB,WC1,WC6,WC9,C5,CF3,CF3M,CF8,CF8M and other Alloy.

Operator: Hand lever, Gear Box, Electric-Actuator, Pneumatic-Actuator

Design & Manufacture: API609,DIN3840

Face to Face Dimension: API 609,EN558

Flange Ends Dimension:EN1092,ANSI B16.5

Test & Inspection:EN12266,API598

End: Wafer, Full Lug and Double Flanged

Drive Device: Hand wheel,Gear Box;Electrical & Pneumatic Actuator