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Center Line Wafer Butterfly Valves

Main Technical Data:

Nominal diameter: DN50~2000mm  2″~80″inch

Pressure rating: PN 6/10/16/25

Working temperature: carbon steel -29℃~425℃, stainless steel -40℃~600℃

Connection standard: ANSI, DIN, API, ISO, BS, GB

Actuator: manual, gear operator, pneumatic, electric actuator

Installation: horizontal, vertical

Medium: water, seawater, waste water, air, oil, low corrosive fluids etc.


Product Detail

Product Tags

Features
▪ Double eccentric, Triple eccentric type for option.
▪ Rubber seated, Metal seated type for option.
▪ A pin free structure between the connection of valve disc and stem to overcome the possible internal leakage point.
▪ Small opening torque, flexible and convenient to use, labor-saving and energy-saving.
▪ Unique structure, light weight, easy for open and close.
▪ Can be installed in any positon and easy for maintenance.
▪ Resistance for high temperature, low temperature and corrosion.
▪ Widely used in kinds of working conditions and mediums.
▪ Unique synchronous display mechanism for the horizontal installed underground butterfly valve.

▪ Test pressure:
Shell Test Pressure 1.5 x PN
Seal Test Pressure 1.1 x PN

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Material Specifications

Part Material
Body Cast steel, Ductile iron, Stainless steel, Chrome molybdenum steel, Alloy steel, Duplex stainless steel, Gray cast iron,
Disc Cast steel, Ductile iron, Stainless steel, Chrome molybdenum steel, Alloy steel, Duplex stainless steel, Gray cast iron,
Stem 2Cr13, 1Cr13 Stainless steel, Cr-Mo. steel, Duplex stainless steel
Seat Stainless steel, Cr-Mo. steel, Duplex stainless steel
Sealing Ring Stainless steel and high temperature resistant asbestos board combined into multi-layers
Packing Flexible graphite, Graphite asbestos, PTFE

Schematic

Center Line Wafer Butterfly Valves (1)
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Center Line Wafer Butterfly Valves (5)
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Center Line Wafer Butterfly Valves (6)
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We supply
▪ Double Eccentric Ruber Seated Wafer Butterfly Valves
▪ Double Eccentric Metal Seated Wafer Butterfly Valves
▪ Triple Eccentric Metal Seated Wafer Butterfly Valves
▪ Other Types Wafer Butterfly Valves

Surface Protection - Suitable for Various Working Conditions
▪ The valve surface is treated by sand blasting process, and then by plastic spraying or painting process according to the valve size.
▪ Advanced valve spraying technology enables the valve to be well protected in any working conditions.

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Coating
▪ Standard Epoxy Coating
Epoxy resin coating is a common anti-corrosion treatment material. There are strict regulations for the thickness and temperature in the treatment process. The temperature must reach 210 ℃, and the thickness is not less than 250 microns or even 500 microns. The coating is harmless to human body and is absolutely safe for drinking water.
▪ Special Coating for Corrosion Protection
The special coating provides reliable protection for the valve, especially for some harsh working conditions, such as acid or alkali media, water containing sediment, cooling system, hydropower systems, sea water, salt water and industrial wastewater.

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EPC (Ceramic and Epoxy Two- Component Coating)

Hard or Soft Lined Rubber Coating

Polyurethane Painting Interior and Exterior

Special Conductive Coating Exterior to Avoid Fire

Application
▪ It is installed in water supply and drainage, sewage, food, heating supply, gas, boats and ships, hydropower, metallurgy, energy system, light textile and other industries, especially suitable for two-way sealing and occasions where the valve body is easy to rust. The valve is a conventional butterfly valve preferred for pipeline, with simple structure, small flow resistance coefficient, linear flow characteristics and no sundries. It can be used not only to cut off the medium, but also to adjust the flow of the medium.


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