electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator

Product Details
Customization: Available
Media: Gas
Driving Mode: Pneumatic
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  • electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
  • electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
  • electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
  • electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
  • electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
  • electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
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  • Overview
  • About SNT Butterfly Valves
  • Product Specifications
  • Design Features
  • Product Range
  • Valve Special Treatments
  • Typical Product Application
  • Production application
  • Company Profile
Overview

Basic Info.

Model NO.
AOC-430
Connection Form
Flange
Structure
Eccentric
Seal Form
Supercharging Pressured Sealed
Valve Stem
Link
Work Pressure
High Pressure (10.0mpa< Pn <80.0mpa)
Working Temperature
High Temperature (T>450°C)
Material of Seal Surface
Soft Sealed
Standard
Sil/API
Application
Industrial Usage, Water Industrial Usage
Design Standard
Ap1598API607asmeb16.34
Standard Size
Nps12-160"(DN300-DN4000)
Pressure Class
Pn2.5-Pn20/Asmeclass150
Applicable Temperature
-20 Degree ~ 800 Degree
Leakage Class
Ansib16.104VI, API598 No Leakage
Body Material
Astma105A351CF8m/Special Alloy, etc.
Valve Internals Material
A479-316/S2205/17-4pH
Operation Mode
Manual, Pneumatic/Electric/Electro-Hydraulic, E
Design
Anti-Static Design/Anti-Misoperation Design
Sealing Structures
Multiple Sealing Structures for Option
Valve Special Treatment
Sand Blasting Surface Treatment SA2.5
Special Treatment
Painting After Surface Treatment
Sealing Surface of Valve Plate
Hard Alloy Surfacing
Valve Body Treatment
Sandblasted Inside and Outside
Fire Protection Design
API607
Transport Package
Wooden
Trademark
SNT
Origin
China
HS Code
8481804090
Production Capacity
500000PCS/Year

Product Description

About SNT Butterfly Valves


In the past few years, SNT Machinery (Qingdao) Co., Ltd. has witnessed a surge in the use of butterfly valves, thanks to advancements in industrial technology. This demand is further fueled by the growing emphasis on energy conservation and environmental protection. This policy shift is crucial.Consequently, cut-off butterfly valves have gained prominence, finding applications in various industries and settings. Previously, in traditionaltechnology,the tri-eccentric butterfly valve utilized torque sealing, where the valve plate is sealed more snugly through actuator torque. However, in certain challenging environments, such as those involving high-temperature catalytic flue gases, potentially reaching temperatures of up to 800°C, thermal expansion stress presents a significant issue. This can lead to the valve becoming stuck,-eccentric butterfly valve malfunctions, thereby negatively impactingindustrial production, resultingin substantial economic losses and heightened risks of safety accidents.
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator

SNT VALVE is at the forefront of pioneering innovative research into high-temperature flue gas device butterfly valves.In response to these challenges, SNT VALVE has introduced a groundbreaking solution with the development of a four- stemeccentric butterfly valve, replacing the traditional tri- eccentric butterfly valve. This innovation, along with theintroduction of thefour-link operativebutterfly valve, marks a first in the industry, effectively resolving long-standing issues. This advancement has led to two national patent applications: a four- stemeccentric butterfly valve (Patent No. ZL201520326489.1) and a catalytic device employing the four-stem eccentric butterfly valve (PatentNo. ZL201921719624.3). These innovations were rigorously tested and commissioned by the China Petroleum and Chemical Industry Federation. The federation engagedChangzhou University to conduct a thorough product evaluation, culminating in recognition as a domestic leader in this sphere.Our commitment to excellence was validated by thisaward.


electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator


Applications of the Four-Link Eccentric Butterfly Valve

SNT's AOC-4000 series four-link eccentric butterfly valve is expertly crafted for use in special conditions, serving as an ideal regulating and shut-off valve across various demanding applications.
Introducing the AOC-4000 series four-link eccentric butterfly valve, an engineering marvel meticulously crafted for scenarios demanding high-temperature endurance, expansive diameters, substantial flow rates, minimal pressure drop, and impeccable sealing. Its superior planar sealing mechanism ensures seamless operation, even under intense heat, preventing any risk of valve jamming. Experience swift action with rapid opening and closing capabilities, exceptional precision in adjustment, and steadfast sealing reliability. This makes the AOC-4000 series an ideal choice for the precise regulation or complete shut-off of pipeline media, especially in the intricate production processes of phthalic anhydride and maleic anhydride. Beyond these, it is adept at handling various gases and liquids, such as hydrogen, ammonia, air, smoke, and gas within diverse pipeline systems. Additionally, for media with crystallization tendencies, like sulfur, a specialized jacketed structure is available to avert potential pipeline blockages due to cooling and condensation, ensuring uninterrupted flow.

The versatile AOC-4000 series four-link eccentric butterfly valve is typically paired with a cylinder-type single-acting actuator, yet it offers the flexibility to incorporate cylinder-type double-acting actuators, electric actuators, or hydraulic actuators, tailored to your specific operational requirements. Revel in its remarkable efficiency with a minimum shut-off time ranging impressively between 2 to 6 seconds, promising swift and reliable operation.



electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator

Working Principle

The four-link butterfly valve is a sophisticated assembly comprising several key components: a drive device, valve plate, valve body, valve shaft, linkage system, and shaft end seals. The operational dynamism of the valve is facilitated by the drive device, which activates the valve shaft in conjunction with the four-link mechanism. As the valve shaft pivots, it seamlessly lifts the valve plate, aligning it parallel to the pipeline center to achieve a fully open stance. Conversely, a reverse rotation mechanism gently lowers the valve plate until it meets and compresses the sealing surface of the valve body, achieving a fully sealed closure. This innovative design ensures precise control and reliability in various applications.

Product Specifications

Body

Type Four Lever Offset Buterfly Valves
Body Size NPS 6-64''(DN 150-DN 1600)
Disc Form Four Lever Eccentric 
Flow to Flow into the shaft side 
Characteristics Liner/On-off
Trim material/Trim treatment See valve material table 
Body ratings ASME B16.34 ANSI 150
Body Connections ·ANSI, EN Double Flanged
·ANSI B16.25
·API 609 Single Flange-Lug Type
Face to Face Dimension See valve overall size
Range ability  Over 100:1(See Cv coefficients table)
Bonnet Type Standard -29 degree
Radiation fin -55 degree-566 degree
Cryogenic -196 degree-55 degree
Packing PTFE
flexible graphite

Leakage Class

According to API 598 Zero Leakage
 

Design Features

Experience adaptability with a maximum diameter of the connecting valve body reaching up to DN4000, ensuring versatile applications.
Revolutionary four-stem structure design paired with a flat seal ensures impeccable function and reliability under pressure.
Ingenious external double bearing design effectively prevents any medium intrusion, eliminating blockage concerns.
Robust drain valve feature efficiently counters medium corrosion, safeguarding longevity and performance.
Impressive high-temperature capacity, engineered to withstand conditions up to 800 ºC, promising enduring excellence.
API607 Fire Protection Design offers peace of mind with superior safety measures against fire hazards.
Seamless integral stem design integrates an anti-center shaft out feature, boosting stability.
Innovative anti-static design mitigates static risks, enhancing operational safety.
Advanced anti-misoperation design ensures precision and prevents inadvertent errors.
Versatile multiple sealing structures available, providing customization for various needs.
Expertly crafted fabricated construction demonstrates durability and design finesse.
• During both the initial opening and final closing stages, the disc's parallel motion relative to the body seat ensures a friction-free operation.
• Diverse seat arrangements offer flexibility and cater to specific operational requirements.

 

Product Range

★ Design Standard Elegance: AP1598, API607, ASME B16.34
★ Size Standards of Excellence: NPS12-160" (DN300-DN4000)
★ Pressure Precision Class: PN2.5-PN20 / ASME CLASS 150
★ Temperature Versatility: -20 °C ~ 800 °C
★ Leak Integrity Class: ANSI B16.104 VI, API 598 No Leakage
★ Robust Body Material: ASTM A105, A351 CF8M /Special Alloy, etc.
★ Premium Valve Internals Material: A479-316, S2205, 17-4PH
★ Diverse Operation Modes: Manual, Pneumatic, Electric, Electro-Hydraulic, etc.
Product range is adaptable for expansion based on user requirements

Valve Special Treatments

Sand Blasting Surface Treatment SA2.5
1.
The entire valve body, both inside and outside, undergoes meticulous sandblasting.
2.
Achieve an exquisitely smooth surface post-sandblasting, ensuring robust paint adhesion.
3.
For media with O2 contentum exceeding 23.5%, external sandblasting suffices as internal treatment is unnecessary.

Painting after Surface Treatment
1.
Standard paint resists temperatures up to 450°C; for higher temperatures, specialized treatments are available.
2.
Two protective coats of 35 micrometers each are applied for exceptional corrosion resistance.

Hard Alloy Surfacing on Sealing Surface of Valve Plate
a) The valve plate's sealing surface can be expertly welded with Hastelloy or Stellited gr.6.
b) Spraying with tungsten carbide or other hard alloys, achieving a hardness of HRC60-70.

 

Typical Product Application

Sulfur Tail Gas Recovery


SINOCHEM GROUP: Your trusted partner for Petrochemical Incineration Boiler Crossover Solutions.stem Butterfly Valve (The right figure is utilized as a product even after 4 years of continued performance.

electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator



Petro China 270,000 tons/year sulfur tail gas compliance project
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator

catalytic flue gas turbine outlet butterfly valve is now replacing traditional water seal tanks for enhanced efficiency.

A direct comparison of SINOPEC's catalytic flue gas turbine outlet to a cutting-edge heat recovery boiler at the site.

electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator

Captivating Images captured from the scene at SINOCHEM GROUP Refining and Chemical catalytic flue gas turbine outlet leading to the chimney, ensuring optimal performance.

electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
 

Production application

 
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
 
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
 
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
 
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
electric Four Lever Offset Shutoff Butterfly Valves, Suitable for Pn2.5-Pn20 Pressure with Pneumatic Cyilnder Actuator
 

Company Profile

SNT Machinery (Qingdao) Co., Ltd. stands at the forefront of control valve production, seamlessly integrating manufacturing, design, sales, and service into a single dynamic entity. Boasting rapid development and a strong foundation, SNT is nestled in the vibrant city of Qingdao, Shandong province, sprawled across a 42,000 m² area. Our facilities are equipped with cutting-edge workshops and state-of-the-art production equipment, reflecting our status as a high-tech enterprise with independent intellectual property rights bolstered by advanced international management and production expertise. Our dedicated workforce exceeds 150 skilled professionals, with 15% of our team composed of R&D specialists and 30% holding graduate or higher degrees. Through a combination of high-quality production management and pioneering R&D, SNT produces a diverse range of superior valves, serving sectors including petrochemical, oil, and coal industries. In 2017, our sales soared to nearly 100 billion.

SNT proudly holds the TS Special Equipment Manufacturing Certificate and ISO 9001 certification, along with network qualification certificates from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovative spirit is evidenced by numerous national patents in technology. We excel in designing and manufacturing an extensive array of valves that adhere to ANSI, API, DIN, BS, and JIS standards. Merging the best qualities of globally renowned valves with our groundbreaking R&D, we offer a comprehensive product line including Globe Valves, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, Triple-eccentric Butterfly Valves, V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogenic Valves, and more. Our driving systems encompass manual, power-driven, pneumatic, and hydraulic options, with primary components crafted from materials like A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. We cater to specifications from 1/2" to 120", with working pressures of ANSI 150# to 2500# and temperatures ranging from -196ºC to 1100ºC.

Harnessing sophisticated production technology, top-tier management, and a stringent quality assurance system, SNT Valves have become indispensable across a spectrum of industries such as petrochemical, oil, steel & iron, paper manufacturing, and power generation. Our esteemed clientele features industry leaders including SINOPEC's Qilu and Qingdao branches, CNOOC Huizhou Refinery, PETROCHINA's Guangxi and Ningxia branches, and SINOPEC's Changling and Jinan branches, each one a testament to our commitment to excellence.

We prioritize our users' interests, dedicating ourselves to cultivating exceptional quality and a reputable brand. Our comprehensive quality assurance and aftermarket services ensure that SNT valves not only meet but exceed expectations, fostering prosperous partnerships with all our esteemed customers.

 

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