The triple eccentric butterfly valve provides matched performance, reliability and quality for the harsh conditions of critical process applications, steam isolation, high cycle frequency, and temperature extremes, the superior design of the disc/shaft engagement and the precision machined sealing components combine with innovative design geometry to provide improved cycle life, lower operating torque, and reliable performance in extreme temperatures.
Feature
-Triple Eccentric Design
Eliminates wear associated with sealing surface contact and maintains sealing integrity and high cycle life.
-Wide Angle Seat Design
Eliminates wedging and binding of the seat/disc engagement.
-Bubble-Tight Closure
Ensures process efficiency with reduced cost of maintenance.
-Self-Centering Disc Design
Accommodates thermal cycling and temperature without binding.
-Robust Single-Piece Shaft
Minimizes shaft deflection which promotes bi-directional sealing.
-No Plastics or Elastomers
Standard design provides fire safety.
-Bearing Protector Rings
Prevent solid particles from coming in contact with bearing surfaces.
-Blow out-Proof Shaft
Complies with API 609 to improve safety for operating personnel.
-Low Break and Operations Torque
Enables simplified, cost-effective automation
Triple Eccentric Design
As the name implies, there are three separate offsets designed into the triple offset butterfly valve. Two of the offsets apply to the location of the shaft in respect to the centerline of the bore and the centerline of the disc/seat sealing surfaces:
Offset 1: The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat.
Offset 2: The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve.
Offset 3: The third offset in the design is the axis of the seat cone angle that is inclined from the centerline of the valve bore to minimize rubbing of the seat/seal contact surfaces during operation and to preserve sealing integrity over the cycle life of the valve. This wide angle seat also eliminates wedging or binding of the disc.
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Part Name |
Material |
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Body |
Cast Iron |
Ductile Iron |
Carbon Steel |
Cast steel |
Stainless Steel |
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Disc |
Cast Iron |
Ductile Iron |
Carbon Steel |
Cast steel |
Stainless Steel |
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Shaft |
Stainless Steel |
Carbon Steel Electroplate |
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Seat |
Stainless Steel |
Natural Rubbe |
Nitrile Rubber |
Neoprene |
PTFE |
Bronze |
EPDM |
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O-Ring |
Stainless Steel |
Neoprene |
Nitrile Rubber |
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ZHONGGONG VALVE GROUP(ZGV). Has an area of 23800 square metres and 5678 million registered capital. At present, company have employees and senior officers title more than 380 staff, with over 300 sets high precision machinery devices. CAD valve drawing design, also have the advanced quality testing devices, performance testing, ultrasonic thickness gauge, spectrum analyzer, crack detection, testing hardness instrument, chemical analysis and so on testing equipment.
Having passed the special devices pressure pipeline certification(TS) issued by national administration of quality, national quality authentication enterprise, ISO-2000 certification, API6D certification and CE(EU), our enterprise acts as the members of first-tier supplying network of national power corporation, first-tier network of Chinese petroleum resource, first-tier supplying network of China sinochem corporation, recommended-product unit of China engineering construction association. Our company has established the direct sales office in large&medium cities and regions of China.
Companies with innovative, services as the targated, with strength, professional, faith and reasonable price with quality assurance, to satisfy a wide rang of users, welcome new and old customers at home or abroad come to visit, guidance. to discuss cooperation and create a brilliant future.
Our main offer list:
Butterfly valve
-Class 150-300 Cast Steel(Stainless steel) Flange Tyep Butterflt Valve
-Class 150-300 Cast Steel(Stainless steel) Lug Type Butterflt Valve
-Class 150-300 Cast Steel(Stainless steel) Wafer Type Butterflt Valve
DIN STANDARD:
PN6-PN40 Cast Steel(Stainless steel) Triple And Double-eccentric bi-directional Butterfly Valves
Check Valve--SWING& PISTION TYPE
-Class 150 & Class 300 Cast Steel Swing Check Valve
-Class 600 - Class 2500 Cast Steel Swing Check Valve
-Class 150 - Class 900 Cast Steel PISTION Check Valve
-Class 150 - Class 1500 Forged Steel Check Valve
Ball Valve
-Floating Ball Valve
-Trunnion Ball Valve
-Metal to Metal Sealed Ball Valve
-Female Threaded Ball Valve
-Class 150- Class 2500
Gate Valve
-Class 150-300Cast Steel Gate Valve
-Class 600 & Class 900 Cast Steel Gate Valve
-Class 1500 & Class 2500 Cast Steel Gate Valve
-API 603 Class 150-Class 300 Cast Stainless Steel Gate Valve
-Class 150 - Class 1500 Forged Steel Gate Valve
Globe Valve
-Class 150 Cast Steel Globe Valve
-Class 300 Cast Steel Globe Valve
-Class 600 & Class 900 Cast Steel Globe Valve
-Class 150 - Class 1500 Forged Steel Globe Valve
Plug Valve
-Inverted Pressure Balance Lubricated Plug Valve
-Sleeve Type Soft Sealing Plug Valve
-Class 150- Class 900
