8″ Butterfly Valve

Description

ZECO Valve is a professional butterfly valve manufacturer, providing a competitive butterfly valve price.

What is 8 Inch Butterfly Valve?

Butterfly valves service high-performance fire protection systems and are available in a broad size range with wafer lug, grooved, or press end connections. Butterfly valves provide bi-directional dead-end service in commercial and industrial service and can provide many maintenance-free cycles and still accommodate “bubble tight” shut-off. ZECO 8 inch butterfly valve adopts rubber or Teflon material as sealing face, this structure is able to reduce. Butterfly valve is able to be used on various pipes, which shares many advantages: such as its structure is compact, closure is fast, sealing capacity is tightened, the operation is easy, and life-extension is long. During the process of closure, abrasion is small. Because the valve is designed as double offset structural, when the valve is fully open, disc sealing is in the state of loosening. When the valve is fully closed, the seal ring is compressed by the body and disc, thus causing the deformation, this kind of flexible sealing maximizes sealing capacity. Sealing face precisely cooperates with the body, sufficiently avoids medium flushing, and prolongs the valve’s life extension. Valve has the complex structure for a pressure vessel and operational machine, maintaining the valve, occasional open/close shall be put into consideration; At the same time, mainly static pressure state of valve shall also be considered. Keeping the valve to a certain position, the operational capacity of the valve may be reduced, this is caused by the accumulation of corrosive substances on moving parts. Under some circumstances, the valve shall be circulated open/closed periodically. The intactness of pressure boundary required the intactness of pressure-bearing parts, pressure-bearing shall be checked regularly.

Standards of 8″ Butterfly Valve

Design Standard API 609, ASME B16.34, JIS B2064, GB/T 12238
Face to Face API 609, DIN 3202, ISO 5752, BS 5155
Flange End DIN 2501, ASME B16.5, BS 4504, JIS 10K
Top Flange ISO 5211
Test Inspection API 598, EN 12266-1

Dimensions & Weight of Butterfly Valve 8 Inch

Pressure Rating Bore  Face to Face Dimension(in mm) Weight
(in mm) RF Wafer Lug kg
CLASS 150 201 292/152 60/64 60/64 20
CLASS 300 201 418/230 73 73 35
CLASS 600 201 660/230 102 102 60

Material of 8 Inch Butterfly Valve:

No Part Material
1 Body Cast Iron / Ductile Iron / Carbon Steel / Stainless Steel
2 Disc Cast Iron / Ductile Iron / Carbon Steel / Stainless Steel
3 Stem Stainless Steel
4 Seat EPDM / NBR / PTFE / VITON / HYPALON / SS304 / SS304 +Graphite
5 Stem Packing EPDM / NBR / Graphite

Features of Butterfly Valve 8 Inch

  • ZECO 8 inch butterfly valve can choose metal to metal seat ring or resilient seat ring;
  • The yoke of ZECO 8 inch butterfly valve is designed according to ISO 5211 standard and connected with an electric actuator, pneumatic actuator, hydraulic actuator, and manually operated;
  • ZECO 8 inch butterfly valve has a replaceable sealing ring design;
  • If ZECO 8 inch butterfly valve chooses metal to the metal structure, it can have a fire safety design and structure, the metal seated structure makes the valve fire-safe and meets the requirement in API 607.
  • Minimal loss of pressure
  • Easy to open and close
  • Good leak tightness
  • Compact design
  • Easy movement of the disk should be controlled during the assembling

Applications of 8″ Butterfly Valve

  • Heating air-conditioning systems
  • Water purification system
  • Mining industry
  • Shipbuilding
  • Chemical industry
  • Food industry
  • Oil and gas industry
  • Fire extinguishing system