The AOC-9031 Series Single Parallel Sliding Gate Valves from SNT Machinery (Qingdao) Co., Ltd. stand as a testament to engineering excellence in control valves. These meticulously crafted valves, often referred to as flat gate valves, are pivotal in optimizing the production process. They boast exceptional opening and closing capabilities with their full bore design, ensuring minimal flow resistance and superior sealing performance. This makes them remarkably easy to operate. Perfectly suited for an array of applications, these valves excel in the transportation pipelines and storage systems of refined oil products, as well as in the wellhead devices for oil and natural gas extraction. Additionally, they are ideal for pipelines containing media with suspended particles and fibers, thus offering unparalleled versatility and reliability in demanding industrial environments.
Introducing the AOC-9032 Series Double Parallel Sliding Gate Valves, another pinnacle of cutting-edge innovation by SNT Machinery (Qingdao) Co., Ltd. These valves are engineered with a distinctive metal contact structure that guarantees not only seamless operation but also exceptional cut-off performance. Their robust design is especially suited for use as emergency shut-off valves, vent valves, or as large-diameter control valves in environments characterized by high temperature, high pressure, and extremely low temperatures. Their versatility extends to applications involving transportation pipelines and storage systems for refined oil products, oil and natural gas extraction wellheads, and challenging conditions with high-temperature and high-pressure particles. They are indispensable in independent steam turbine feed systems, making them the ideal choice for industries demanding heightened reliability and performance.
| Body Type |
AOC-9031 Single Parallel Sliding Gate Valves |
AOC-9032 Double Parallel Sliding Gate Valves |
AOC-9033 Spring Loaded Double Parallel Sliding Gate Valves |
| Actuator Size |
1.1/2''(40A)-36''(900A) |
1.1/2''(40A)-36''(900A) |
1.1/2''(40A)-24''(600A) |
| Plug Size |
1.1/2''(40A)-36''(900A) |
1.1/2''(40A)-36''(900A) |
1.1/2''(40A)-24''(600A) |
| Body Rating |
ANSI 150-300 |
ANSI 150-600 |
ANSI 150-1500 |
| Fluid Temperature |
-20~+250ºC |
-20~+450ºC |
-20~+566ºC |
| Connections |
Flanged(RF, RTJ), Butt Weld, Socket Weld(SW, BW) |
| Body Materials |
A216WCB/C,A217 WC6/9, A351 CF8, A351CF8M,etc |
| Trim Materials |
A105+ENP+PTFE,SUS316+Stellite, etc |
SUS316+Stellite |
| Flow Materials |
ON-OFF |
ON-OFF |
ON-OFF |
| Leakage |
Metal Seat |
ANSI Class V |
ANSI Class V, VHS |
ANSI Class V, VHS |
| Soft Seat |
Non-guided Structure Features
1. Designed with an innovative non-guided gate, this valve boasts a compact structure, reduced size, and is lightweight, providing unmatched efficiency.
2. The gate's versatility shines through its customizable V-shaped, semi-circular, or pentagonal channels, offering precision regulation to adapt seamlessly to any opening degree and precisely meet pipeline system flow demands (refer to the diagram on the right).
3. Equipped with dual floating valve seats featuring a sophisticated soft-hard composite seal, this valve promises extended durability. In situations of abnormal internal cavity pressure, the floating valve seat ingeniously releases the excess pressure back into the pipeline.
4. For enhanced maintenance, grease injection valves are strategically located at the external seats of the valve body. Should seal pair wear lead to leakage during operation, injection of sealing grease here effectively halts the leakage.
5. To maintain optimal performance, a drain valve is expertly installed at the bottom of the valve body, enabling the efficient discharge of any accumulated impurities within the valve.
Guided Gate Structure Diagram
1. When fully opened, the guide hole in the gate expertly aligns with the valve body channel, forming a direct straight pipe section for media purging (refer to the above diagram).
2. Throughout the gate's operation, the valve seat continuously contacts and fits the gate. The soft valve seat functions tirelessly to scrape off impurities during operation, making this flat gate valve an ideal choice for media with suspended particles and fibers, while preventing any seal surface damage from thermal deformation.
3. The floating valve seats, with their innovative soft-hard composite seal, promise long-lasting performance.
4. In scenarios of abnormal pressure spikes within the valve cavity, the floating valve seat automatically releases the high pressure into the pipeline, ensuring safety and reliability.
5. Ingeniously integrated at the bottom of the valve body, a drain valve facilitates the discharge of any impurities collected inside, ensuring consistent performance.
SNT Machinery (Qingdao) Co., Ltd., a trailblazer in control valve production, excels in integrating manufacturing, design, sales, and service. Founded on a high-starting point and rapid development ethos, SNT is strategically nestled in the picturesque locale of Qingdao, Shandong Province, sprawling over an impressive 42,000 square meters. Our cutting-edge facilities and state-of-the-art production equipment underscore our status as a high-tech enterprise with proprietary intellectual property and the infusion of best-in-class global management and production methodologies. Boasting a dynamic team of over 150 professionals, 15% are R&D specialists, and 30% are graduates or hold advanced degrees. Anchored by a robust production management team and pioneering R&D innovations, SNT excels in producing premium quality valves, prominently serving the petrochemical, oil, and coal chemical sectors. In 2017, we proudly achieved a sales milestone of nearly 100 billion.
SNT has proudly secured the TS Special Equipment Manufacturing Certificate and the prestigious ISO 9001 certification. Furthermore, we have attained the coveted network qualification certificates from giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovative prowess is showcased through numerous national patents across various technologies. We possess the expertise to design and manufacture an extensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By amalgamating the strengths of globally renowned valve designs with our independent R&D, we offer a comprehensive portfolio, including GLOBE, High-Pressure Boiler Blow-Down Valves, High-Performance Butterfly Valves, Angle-Regulating Valves, Eccentric Rotary Valves, and the T Three-Eccentric Center Butterfly Valves.
Our extensive valve catalog further encompasses V Ball Valves, High Wear-Resistant Ball Valves, High-Pressure Steam Valves, Micro-Flow Control Valves, Self-Operated Control Valves, and Cryogenic Valves. The driving mechanisms range from manual to power-driven, pneumatic, and hydraulic operations. We utilize superior materials such as A216 WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M, ensuring robustness and reliability. Our specifications span from 1/2" to 120", with an operational pressure range from ANSI 150# to 2500# and temperature endurance from -196ºC to 1100ºC.
Leveraging advanced production technology and a stringent quality assurance system, SNT Valves have become indispensable in industries like petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele includes industry titans such as SINOPEC's Qilu and Qingdao branches, CNOOC Huizhou Refinery, PETROCHINA's Guangxi and Ningxia branches, and SINOPEC's Changling and Jinan branches, among others.
Placing user profitability at the forefront of our mission, we are passionately committed to crafting superior quality and fostering a reputable brand. Our impeccable quality assurance and comprehensive after-sales service systems ensure that SNT valves stand as a trusted partner for our customers, forging a path to shared prosperity and success.
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