65 years manufacture DN500 flange offset soft sealing DI butterfly valve

TWT valve company can made the the  size from DN100-DN3600
flange double eccentric butterfly valve 
and  TWT valve company is the birthplace of china's first butterfly valve 
Double eccentric butterfly valve si unique structural design
Design of eccentric structure, the butterfly valve seat and the valve plate outer contour unique, effectively reduce operating torque, while reducing and the valve seat contact, improve sealing reliability. No mechanical internal DB type butterfly valve (fasteners) connection, no mechanical connection failure may, high reliability, the eccentric butterfly valve can adapt to the harsh working conditions. Filling epoxy resin process makes the valve plate and valve seat the contact surface with the same amount of interference, the elimination of machining and assembly errors, compared to the pressure evenly, reduce operating torque, reduce the abrasion of the sealing surface. DC type butterfly valve type N stainless steel ring is inlaid on the valve body, long can prevent corrosion, and can prevent the velocity of flow instability caused by the vibration and fastening the resulting parts loosening and shedding caused by the valve failure.



Soft Sealing Flange Eccentric Butterfly Valve- DC series 
Device for regulating or cutting off medium in pipeline.
· Patent technology on-line repair design with pressure
· More long life
· Design of high performance stem and stem brushing
· Better stem and bearing
· Higher valve of CV(Valve Plate)
· A closer connection(Taper pin)
· A corrosion-resistant coating process(epoxy electrostatic spraying)
· More reliable technical guarantee
 

Nominal Diameter: DN150-DN3600

Nominal Pressure: 10Bar/16Bar/150lbs/25bar

Design Standard:  BS EN593/BS5155/API609/DIN3354

FTF Dimension:  ISO 5752 SERIES 13&14 /BS EN558 SERIES 13&14 /API609/DIN3202/ASME B16.10

Flange Connection: ASME B16.1 Class125/ASME B16.5 CL150/ASME B16.47 CL150/AWWA C207/

                             DIN 2501 PN10-16-25/EN1092 PN10-16-25

Inspection and Test:    EN12266-1/API 598/ISO5208

Material list:

1. Body

•   Ductile Iron:   ASTM A536 60-40-18/ DIN1693 GGG40,GGG50
• 2. Disc:   Ductile Iron:    ASTM A536 60-40-18/ DIN1693 GGG40,GGG50

•     Stainless Steel:    ASTM A182 304/316/431/ Duplex Stainless Steel
• Other description
  Design:EN593,AWWAC504, BS5155
  Installation  without restriction in direction of flow.
  Reduced  weight and overall dimensions.
  Low pressure loss and reduced energy costs.
  High Kv / Cv values.
  Easy to clean and disinfect for potable water systems etc.
  Self cleaning ( no residue will be trapped ).
  Good resistance to corrosion.
  Manul , electric actuator , pneumatic actuator , hydraulic actuator , bare shaft is optional
  Wate , drinking water , portable water , Oil , sea water , gas are all available working service.
  Size is from DN150-DN3600

• More than 60 years of valve production experience
• with advanced processing equipment
• large testing laboratories
• and sufficient raw material reserves