High-performance butterfly valve, butterfly valve

Characteristics of High-Performance Butterfly Valve 

A double eccentric butterfly valve with a spherical sealing surface and a single piece of flexible lip-type sealing seat is adopted, suitable for applications requiring reliable sealing and regulating characteristics. Due to the design of the double eccentric butterfly valve, this valve has excellent sealing performance and a long service life. It can be used for quick shut-off or flow regulation. The product is suitable for the transportation of liquids and gases (including steam) in various industrial pipelines. It can also be used for media such as chlorine, oxygen, high vacuum, anti-sulfur or corrosive media. The product can also have a fireproof structure as an option. The connection method can be either flanged or lug-type single flange for large pipe diameters and at the end of the pipeline.

Because this butterfly valve of the product adopts the three-dimensional eccentric principle, the spatial movement trajectory of the sealing surface is idealized. There is no friction or interference between the sealing surfaces, and with the appropriate selection of sealing materials, the sealing performance, corrosion resistance, high-temperature resistance and wear resistance of the butterfly valve have been reliably achieved. 

The main features of the high-performance butterfly valve are as follows: 

1. The opening torque is small, it is flexible and convenient, and saves effort and energy.

2. The three-dimensional core structure has reliable sealing performance and achieves zero leakage.

3. It is resistant to high pressure, corrosion, wear, and has a long service life. 

High-performance butterfly valve adopts standard design 

Design standard: GB/T12238-1989; JB/T8527-1997

Flange connection dimensions:

GB/T9113.1-2000; GB/T9113.2-2000

GB/T9115.1-2000; GB/T9115.2-2000

Structural length: GB/T12221-1989

Pressure test: GB/T13927-1992; JB/T9092-1999

American standard design and manufacturing: API609, MSS SP-67, MSS SP-68

Inspection and testing: API598

Flange connection: ASME B16.5 (NPS ≤ 24), ASME B16.47 B series

Staple joint: ASME B16.25

Structural length: API609 Pressure and temperature rating: ASME B16.34

Valve seat sealing

ANSI/FCI 70-2 specifies the leakage levels and test procedures for control valves. Among them, level VI represents the leakage level. The high-performance wafer-type butterfly valve can achieve the non-air bubble sealing as stipulated in MSS-SP61.

Fire-resistant valve seat

The fire-resistant valve seat is designed for use when effective closure is required during a fire. It is made by embedding a metal seat ring in PTFE, with PTFE serving as the seal. When PTFE is damaged, the metal seat ring serves as the seal for effective closure. The fire-resistant valve seat is also suitable for critical or severe operating conditions. Two-door units with fire-resistant valve seats have been tested and approved in accordance with API607 4th edition and BS6755 Part 2.

High-performance butterfly valves, due to their excellent performance, are widely used in various industrial fields, including: 

Petroleum and natural gas industry: From upstream extraction to downstream refining and chemical processing, including wellhead equipment, oil/gas separators, oil/gas pipelines, refineries and chemical plants, etc., used to control oil and gas medium pipelines and cope with complex environments such as flammability, explosiveness, high temperature and high pressure. 

Chemical and petrochemical industry: Involves flammable, explosive, toxic, and corrosive media, and is applied in key sections such as reaction vessels, distillation towers, and solvent recovery systems. 2 

Pharmaceuticals and pesticides industry: In processes such as reaction, extraction, crystallization, and drying, the piping systems used to control flammable and explosive solvents. 

Coatings, inks and dyes industry: In areas such as resin synthesis tanks, mixing tanks, powder conveying systems, etc., for controlling pipelines of flammable solvents and powder raw materials. 

Coal chemical industry: Producing chemical products using coal as the raw material, during which a large amount of explosive gases are generated. These gases are applied in key sections such as gasifiers, reformers, and purification devices. 2 

Dust explosion-proof environment: Such as flour mills, starch plants, and grain warehouses in grain processing and storage industries, used to control environments with explosive dust. 

Other applications: Suitable for drainage in water treatment plants, power plants, steel mills for smelting, water source projects, environmental facility construction, etc. Especially suitable for use as regulating and diversion equipment in water pipelines.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.