Manumal Four Lever Offset Shutoff Butterfly Valves, Meeting Rigorous Industry Standards with Carbon Steel Materials

• Customization: Available
• Media: Gas
• Driving Mode: Pneumatic
• 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 recent years, with significant advancements in industry, and the stringent requirements for energy conservation and environmental protection, policy initiatives, the use of shut-off butterfly valves has been expanding rapidly. Previously, in the existingtechnology,the tri-eccentric butterfly valves were known for torque sealing, where the valve plate closed more securely by the actuator's torque to achieve the intended sealing effect. However, in certain specialized environments (such as high-temperature catalytic flue gas, gaseous, sulfur tail gas, and other media, where temperatures soar to 800°C), due to thermal expansion stress, the valve might fail to open, leading to severe consequences including the tri-eccentric butterfly valve becoming stuck, thereby impactingindustrial operations ,causing substantial economic losses, and even posing safety risks. SNT


VALVE is a pioneer in the development of high-temperature flue gas device butterfly valves .To address these complex issues, SNT VALVE innovatively proposed the implementation of four- stem eccentric butterfly valves, replacing the traditional tri-eccentric butterfly valves and introducing a new era of butterfly valve solutionsin the industry, effectively resolving long-standing challenges. This breakthrough has led to the acquisition of two national patents: a four-stem eccentric butterfly valve (patentNo. : ZL201520326489.1) and a catalytic device with a four- stemeccentric butterfly valve (patent No. : ZL201921719624.3). This innovative solution has been validated and commissioned by the China Petroleum and Chemical Industry Federationin collaboration with Changzhou University,receiving accolades as a domestic leader. Four-link Eccentric Butterfly Valve ApplicationThe AOC-4000 series four-link eccentric butterfly valve, crafted by SNT, finds extensive application as a specialized condition regulating and shut-off valve. The innovation offered by this series transforms conventional applications, delivering enhanced performance and reliability. Industries ranging from energy to chemical processing are benefiting from its robust design, ensuring safety and efficiency under the most challenging conditions. SNT Machinery (Qingdao) Co., Ltd. continues to drive innovation,pioneering advancements in valve technology that meet rigorous industry standards. Trust SNT for all your butterfly valve needs and experience the pinnacle of engineering excellence. SNT's unwavering commitment to quality and innovation ensures that their valves not only meet but exceed industry expectations.Experience the cutting-edge technology and reliability that SNT brings to your operational needs today.

<sup>Join the growing list of satisfied industries who trust SNT's exceptional range of butterfly valves.

The AOC-4000 series excels in special condition regulation and shut-off applications, thanks to SNT's unmatched design expertise.
Introducing the extraordinary AOC-4000 series four-link eccentric butterfly valve, designed to excel in challenging conditions such as high-temperature, expansive diameters, and high-flow environments with minimal pressure drop. This valve guarantees minimal to zero leakage, making it ideal for critical industrial applications. Its superior planar sealing performance ensures that valve jamming at elevated temperatures is a thing of the past. Experience the rapid opening and closing capabilities, coupled with high precision in adjustments and unmatched sealing reliability, perfect for managing or completely shutting off pipeline media during the intricate production processes of chemicals like phthalic anhydride and maleic anhydride. Versatility is at the core of this valve, as it can adeptly control a wide range of gases and liquids, including hydrogen, ammonia, air, smoke, and other gases within sophisticated pipeline systems. For media that are susceptible to crystallization, such as sulfur, the optional jacketed structure is a game-changer-it effectively prevents blockages caused by cooling and condensation during flow.</sup>

^{In the realm of cutting-edge technology, the AOC-4000 series four-link eccentric butterfly valve is usually paired with a high-performance cylinder-type single-acting actuator. However, depending on specific requirements, users have the flexibility to opt for cylinder-type double-acting actuators, electric actuators, or hydraulic actuators. This customizable feature ensures that the valve meets varied operational needs efficiently. Moreover, the swift minimum shut-off time, ranging from an impressive 2 to 6 seconds, underscores its efficiency and responsiveness, making it a standout choice in the industry.}




Working Principle

^{The ingenious design of the four-link butterfly valve comprises several key components: a drive device, valve plate, valve body, valve shaft, linkage system, and shaft end seals. The operation of the valve is driven by the drive device, which propels the valve shaft and coordinates with the four-link mechanism. As the valve shaft rotates, the valve plate opens; when aligned parallel to the pipeline center, the valve is fully open, allowing seamless flow. In contrast, the reverse rotation of the valve shaft closes the valve plate, and upon contact and compression against the valve body's sealing surface, the valve achieves complete closure. This sophisticated mechanism ensures precise control over the flow of media through the pipeline, reflecting the reliability and innovation behind its engineering.}

Product Specifications

Body: Constructed with precision and durability in mind, the body of the Four Lever Offset Shutoff Butterfly Valves is engineered to withstand the toughest conditions. It offers a robust framework that guarantees seamless operation, even under high-pressure environments, making it an unparalleled choice for industrial applications.

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

^{• Remarkable valve body connection with diameters reaching up to DN4000 for outstanding adaptability
• Innovative four-stem architectural design complemented by a sophisticated flat seal design
• Advanced external double bearing configuration effectively prevents medium intrusion, eliminating the risk of blockages
• Efficient drain valve safeguards against medium-induced corrosion
• Pioneering high-temperature capability, enduring heat up to 800 ºC
• Robust API607 Compliant Fire Protection Design ensuring uncompromised safety
• Seamless integral stem design with anti-center shaft out innovation for enhanced security
• Cutting-edge anti-static architecture to mitigate static electricity concerns
• Ingenious anti-misoperation design to prevent accidental engagements
• A plethora of multiple sealing structures available, catering to diverse needs
• Expertly crafted fabricated construction for superior durability
• Ingenious design ensures that during the initial opening and final closing stages, the disc maintains parallel motion to the body seat, achieving frictionless operation.
• Diverse seat arrangements offer tailored seating solutions}
 

Product Range

^{★ Design standard: AP1598, API607, ASME B16.34 - Crafted to exceed industry benchmarks, ensuring unmatched quality and performance.
★ Standard size: NPS12-160" (DN300-DN4000) - Wide-ranging sizes to cater to all your varying pipeline needs, ensuring a perfect fit and seamless integration.
★ Pressure class: PN2.5-PN20/ASME CLASS150 - Engineered for resilience under pressure, these valves effortlessly manage a broad spectrum of operational demands.
★ Applicable temperature: -20 °C ~ 800 °C - Versatile temperature resilience to ensure optimal performance in extreme conditions, from the coldest to the hottest environments.
★ Leakage class: ANSI B16.104 VI, API598 no leakage - Guaranteed superior sealing to prevent leakages, ensuring efficiency and safety in all applications.
★ Body material: ASTM A105, A351 CF8Mspecial alloy, etc. - Premium materials selected for durability and high performance, suited for even the most demanding environments.
★ Valve internals material: A479-316, S2205, 17-4PH - High-grade internals designed for superior functionality and longevity, tailored to withstand rigorous use.
★ Operation mode: manual, pneumatic, electric, electro-hydraulic, etc. - Adaptable operation modes to suit diverse operational requirements, delivering flexibility and ease of use.
★Product range can be expanded according to user needs - Tailored solutions available to accommodate your specific requirements, ensuring custom-fit precision and satisfaction.}

Valve Special Treatments

<sup>• Sand Blasting Surface Treatment SA2.5
1. Experience the thorough efficiency of sandblasting, which meticulously treats the inside and outside of the valve body, ensuring a pristine finish.
2. Post-sandblasting, each surface boasts a refined texture with excellent paint adhesion, providing a durable and immaculate finish.
3. If the oxygen content in the mediumum exceeds 23.5%, benefit from a comprehensive external sandblasting process, while the internal does not require it, optimizing performance and safety.•</sup>

<sup>• Painting after Surface Treatment
1. Elevate your valve's durability with our standard paint, capable of withstanding temperatures up to 450°C. For higher temperature resilience, specialized treatments are available.
2. Two meticulously applied coats of paint, each 35 micrometers thick, provide superior corrosion resistance, ensuring longevity and reliability.

• Hard Alloy Surfacing appliedon Sealing Surface of Valve Plate
a) The valve plate's sealing surface can be expertly welded with Hastelloy or Stellited gr.6 for enhanced durability.
b) For unparalleled hardness, opt for tungsten carbide and other robust alloy sprayings, achieving a hardness level of HRC60-70, ideal for demanding applications.</sup>
 

Typical Product Application

Sulfur Tail Gas Recovery: Perfectly engineered to optimize sulfur tail gas recovery processes, these valves ensure seamless operation under challenging conditions.

SINOCHEM GROUP Petrochemical Incineration Boiler Crossover Four-: This premium product is tailored for critical applications, enhancing performance in petrochemical incineration boiler systems.stem: With a robust design, our valves are built to withstand the rigors of continuous operation, providing unmatched durability. Butterfly Valve (: The Butterfly Valve epitomizes precision engineering, offering a trustworthy solution across diverse industrial needs.T: Trust in our innovative T-series designs for unmatched efficiency in fluid control scenarios.he right: On the right side, observe the superior craftsmanship and quality of our finely detailed valve mechanisms. figure: This figure illustrates our commitment to excellence and performance. is: This is a testament to our product's reliability and advanced engineering. used product after: This is a frequently chosen product even after 4 years, highlighting its longevity and sustained efficiency. 4 years): After 4 years of rigorous use, the performance and integrity of our valves remain uncompromised.

Petro China 270,000 tons/year sulfur tail gas standard project: Our Butterfly Valves play a pivotal role in Petro China's massive 270,000 tons/year sulfur tail gas standard project, ensuring smooth and effective operations.

catalytic flue gas turbine outlet butterfly valve instead of water seal tank: We've replaced traditional water seal tanks with our state-of-the-art butterfly valves, optimizing catalytic flue gas turbine outlets.

Comparison of SINOPEC catalytic flue gas turbine outlet to heat recovery boiler site: We proudly compare our installations to those of SINOPEC, showcasing unparalleled efficiency and innovation at heat recovery boiler sites.

Images from the scene: Captured images from the scene highlight the premium quality and robust construction of our valves in action. of: Of particular note is the valve's exceptional performance in demanding environments. SINOCHEM GROUP: Trusted by the SINOCHEM GROUP, our valves exemplify reliability and technological advancement. Refining and Chemical: In the refining and chemical sectors, our valves consistently deliver outstanding results, maintaining process integrity. catalytic flue gas turbine outlet: Specifically designed for catalytic flue gas turbine outlets, our valves offer superior control and efficiency. to chimney: Seamlessly channeling emissions to the chimney, our valves ensure operational safety and environmental compliance.

 

Production application

 

 

 

 

 

Company Profile

<sup>SNT Machinery (Qingdao) Co., Ltd stands as a beacon of excellence in the realm of control valve production, seamlessly integrating manufacturing, design, sales, and services into a cohesive powerhouse. With a strategic location in Qingdao, Shandong province, sprawling across 42,000 square meters, SNT is equipped with cutting-edge workshops and state-of-the-art production facilities. As a trailblazing high-tech enterprise, we boast independent intellectual property rights and leverage globally recognized management and production expertise. Our dedicated team of over 150 professionals includes an exceptional R&D specialist cohort constituting 15% of our workforce, while 30% of our team holds graduate degrees or higher. Driven by a commitment to superior production management and groundbreaking R&D, we specialize in crafting premium valves catering to the petrochemical, oil, and coal chemical sectors, achieving an impressive sales milestone of nearly 100 billion in 2017.

SNT is proud to have secured the prestigious TS special equipment manufacturing certificate and ISO 9001 accreditation, alongside the esteemed network qualification certificates from SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovation is further evidenced by numerous National Patents across diverse technologies. We excel in designing and manufacturing an extensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By amalgamating the global best features of renowned valve designs with our proprietary R&D, we offer a wide spectrum of valves including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and more. The driving mechanisms available range from manual to power-driven, pneumatic, and hydraulic. Main components are crafted from premium materials such as A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, etc. Specifications range from 1/2" to 120", with working pressures from ANSI 150# to 2500# and temperatures spanning -196ºC to 1100ºC.

With our cutting-edge production technology, meticulous management, and a robust quality assurance system, SNT Valves have become integral to industries like petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our illustrious clientele features industry leaders such as SINOPEC QILU and Qingdao branches, CNOOC Huizhou Refinery, PETROCHINA Guangxi and Ningxia branches, among others. Our reputation for reliability and excellence resonates across these sectors, establishing long-lasting partnerships.

At SNT, we prioritize our users' success, dedicating ourselves to achieving outstanding quality and cultivating a strong brand reputation. Our impeccable quality assurance and comprehensive after-sales systems ensure that SNT valves forge alliances with our valued clients to jointly create a prosperous future.</sup>