The AOC-9031 Series Single Parallel Sliding Gate Valves, also known in the industry as flat gate valves, represent a crucial category of control valves essential for optimizing production processes. These valves boast unparalleled opening and closing capabilities, featuring a design that ensures full bore flow, minimizes flow resistance, and delivers exceptional sealing performance with effortless operation. Ideally suited for a diverse range of applications, these valves excel in managing transportation pipelines and storage systems for refined petroleum products. They are also indispensable for wellhead systems in oil and natural gas extraction and are highly effective in pipelines that handle media containing suspended particles and fibers.
The AOC-9032 Series Double Parallel Sliding Gate Valves stand out as another vital type of control valve, integral to the efficacy of production processes. Distinguished by their unique metal contact structure, these valves guarantee reliable operation and deliver superior cut-off performance, even under the most demanding conditions. They are the valve of choice for emergency shut-off, venting applications, and managing large-diameter control scenarios, especially under high-temperature, high-pressure, and extremely low-temperature environments. Their applications extend across transportation and storage infrastructures for refined oil products, wellhead systems for oil and gas extraction, and pipelines dealing with media laden with suspended particles and fibers. Furthermore, they are critical in independent steam turbine feed systems and other challenging high-temperature, high-pressure scenarios involving particulate matter.
| 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. The absence of a guide hole in the gate results in a sleek and compact design, characterized by a diminutive size and lightweight profile for the valve.
2. With the versatility to incorporate V-shaped, semi-circular, or pentagonal channels, the gate offers dynamic regulating capabilities. This flexibility allows the valve to adjust seamlessly to any degree of opening, perfectly accommodating the flow demands of various pipeline systems (see the right diagram for reference).
3. The innovative design features two floating valve seats with a robust soft-hard composite seal, ensuring exceptional longevity. In instances of abnormal internal cavity pressure increases, the floating valve seat adeptly releases excess pressure back into the pipeline, safeguarding operational integrity.
4. Strategically placed grease injection valves on the external seats of the valve body offer a proactive solution. In the event of seal pair wear leading to leakage, these valves allow for the injection of sealing grease, effectively preventing further leakage.
5. A thoughtfully integrated drain valve at the bottom of the valve body facilitates the efficient discharge of any accumulated impurities within the valve, ensuring optimal performance.
Guided Gate Structure Diagram
1. When fully open, the gate's guide hole aligns perfectly with the valve body channel, creating a seamless straight pipe section that permits unobstructed media purging (see above diagram for illustration).
2. Throughout the gate's operational movement during opening or closing, the valve seat maintains continuous contact and alignment with the gate. The soft valve seat effectively scrapes impurities from the gate, enhancing suitability for media containing suspended particles and fibers. Simultaneously, this feature prevents the seal surface from damage due to thermal deformation of the valve body.
3. The design incorporates two floating valve seats with a durable soft-hard composite seal, guaranteeing a prolonged operational life.
4. In the event of abnormal pressure increases within the valve cavity, the floating valve seat automatically releases the excess pressure into the pipeline, maintaining system safety and integrity.
5. A strategically placed drain valve at the bottom of the valve body ensures the efficient evacuation of any accumulated impurities, preserving the valve's performance and functionality.
SNT Machinery (Qingdao) Co., Ltd is a distinguished producer specializing in cutting-edge control valves, seamlessly merging manufacturing, design, sales, and services into a singular, integrated approach. With a robust foundation and rapid development trajectory, SNT is ideally situated in the scenic city of Qingdao, Shandong province, sprawling over an impressive 42,000 square meters. Our facility is outfitted with state-of-the-art workshops and sophisticated production equipment. As a high-tech enterprise, we boast independent intellectual property rights, leveraging advanced management and production practices from around the globe. Our dynamic team comprises over 150 dedicated professionals, with 15% being R&D specialists and 30% holding graduate or higher degrees. Through our commitment to high-quality production management and innovative research, we proudly deliver top-tier valves for petrochemical, oil, and coal chemical industries, achieving a remarkable sales value nearing 100 billion in 2017.
SNT proudly holds the prestigious TS special equipment manufacturing certificate and ISO 9001 accreditation. We have also earned net qualification certificates from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Additionally, we possess numerous National Patents in various technologies. Our expertise allows us to design and manufacture a comprehensive range of valves in accordance with ANSI, API, DIN, BS, and JIS standards. By integrating the strengths of renowned valves worldwide with our independent R&D, we have mastered the production of various valve types, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and T Three-eccentric Center Butterfly Valves.
Our extensive portfolio further includes V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves, among others. We offer diverse driving forms such as manual operation, power-driven, pneumatic, and hydraulic drives. For our main components, we utilize premium materials like A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, etc. Our valves are available in specifications ranging from 1/2" to 120", with working pressures of ANSI 150# to 2500#, and operational temperatures from -196ºC to 1100ºC.
Backed by advanced production technology management and a comprehensive quality assurance system, SNT Valves enjoy widespread application across the petrochemical, oil, steel & iron, paper manufacturing, and power station sectors. Our esteemed clientele includes prominent entities such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and many more, including the SINOPEC Changling and Jinan branches.
Placing customer profits at the forefront, we dedicate ourselves to establishing unparalleled quality and a reputable brand. Our impeccable quality assurance and after-sales systems ensure that SNT valves form prosperous partnerships with all our esteemed customers, paving the way for shared success and growth.
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