The AOC-9031 Series Single Parallel Sliding Gate Valves, commonly referred to as flat gate valves, stand as a significant class of control valves pivotal in modern production processes. These valves are renowned for their exceptional operational features, boasting a full bore for unimpeded flow, minimal flow resistance, superior sealing capabilities, and user-friendly operation. Ideal for a range of applications, they are perfectly suited for the transportation pipelines and storage facilities of refined oil products, wellhead devices essential in extracting oil and natural gas, and pipelines that handle media rich in suspended particles and fibers.
Introducing the AOC-9032 Series Double Parallel Sliding Gate Valves, another key player in the realm of control valves for industry. These valves are engineered with an innovative metal contact structure, ensuring steadfast performance and cutting-edge shut-off capabilities. Their versatility spans across multiple demanding use cases, making them a top choice for emergency shut-off valves, vent valves, and large-diameter control valves in high-stakes environments, including high-temperature, high-pressure, and extremely low-temperature scenarios. From refined oil transportation and storage systems to wellhead devices for oil and natural gas extraction, and media pipelines with suspended particles and fibers, to independent steam turbine feed systems, these valves excel in the most challenging conditions involving high-pressure and high-temperature particles.
| 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. Our innovative gate design features a non-guided hole configuration, resulting in a remarkably compact structure. This design delivers a small-sized and lightweight valve, offering unmatched convenience in diverse applications.
2. The gate is engineered with versatile channel designs, including V-shaped, semi-circular, or pentagonal configurations. These designs endow the valve with superior regulating capabilities, allowing seamless adjustment to any degree of opening. This feature ensures the valve meets diverse flow requirements in pipeline systems, providing exceptional adaptability and efficiency (see the right diagram).
3. Featuring dual floating valve seats with a soft-hard composite seal, our valve guarantees an extended service life. In scenarios of abnormal internal cavity pressure rise, the innovative floating valve seat automatically releases excess pressure into the pipeline, ensuring safety and reliability.
4. The valve body is designed with grease injection valves located at the external seats. Should leakage occur due to wear of the sealing pair, sealing grease can be injected to effectively prevent and address any valve leakage, maintaining optimal performance and integrity.
5. A strategically positioned drain valve at the bottom of the valve body ensures efficient discharge of accumulated impurities within the valve, maintaining optimal cleanliness and functionality.
Guided Gate Structure Diagram
1. When fully open, the guide hole in the gate aligns perfectly with the valve body channel, forming a straight pipe section. This alignment facilitates direct and effective media purging, showcasing the valve's superior design and efficiency (see above diagram).
2. During the gate's opening or closing movements, the valve seat maintains constant contact with the gate. The soft seat design automatically scrapes impurities off the gate, making the flat gate valve exceptionally suited for media containing suspended particles and fibers. This feature prevents damage to the seal surface caused by thermal deformation of the valve body, ensuring longevity and reliability.
3. With dual floating valve seats and a soft-hard composite seal, the valve is engineered for a long-lasting service life.
4. In cases of abnormal cavity pressure rise, the floating valve seat is designed to release high pressure into the pipeline automatically, guaranteeing safe and efficient operation.
5. A strategically located drain valve at the valve body's base facilitates the discharge of any accumulated impurities, ensuring the valve's smooth and efficient performance.
SNT Machinery (Qingdao) Co., Ltd., a distinguished leader in the control valve industry, seamlessly integrates manufacturing, design, sales, and service under one roof. With a strategic location in Qingdao, Shandong Province, our state-of-the-art facility spans 42,000 square meters, featuring cutting-edge workshops and production equipment. As a high-tech enterprise, we boast independent intellectual property rights and adopt forward-thinking management and production practices from leading global entities. Our workforce exceeds 150 dedicated professionals, with R&D specialists constituting 15% and 30% holding graduate or higher degrees. Our pioneering technology and meticulous production management result in high-quality valves widely acclaimed in the petrochemical, oil, and coal chemical sectors. In 2017, we proudly achieved a sales milestone approaching 100 billion.
At SNT, we have earned the prestigious TS special equipment manufacturing certificate and ISO 9001 accreditation. Our credentials expand with net qualification certificates from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM, alongside numerous national patents. Our expertise allows us to design and produce comprehensive valve series adhering to ANSI, API, DIN, BS, and JIS standards. By harnessing global valve innovations and underpinning them with our independent R&D initiatives, we produce diverse valve types, including GLOBE, High-Pressure Boiler Blowdown Valves, High-Performance Butterfly Valves, Angle-Regulating Valves, and Eccentric Rotary Valves, to name a few.
Our extensive valve portfolio includes V Ball Valves, High Wear-Resistant Ball Valves, High-Pressure Steam Valves, Micro-Flow Control Valves, Self-Operated Control Valves, and Cryogenic Valves. We offer diverse driving mechanisms such as manual, power-driven, pneumatic, and hydraulic operations. The main components are crafted from materials like A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. Specifications range from 1/2" to 120", with working pressures of ANSI 150#~2500# and temperatures spanning -196ºC to 1100ºC.
Our SNT Valves, backed by advanced production technology and a robust quality assurance system, are extensively utilized in industries including petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele features SINOPEC branches at QILU, Qingdao, and Changling, as well as the CNOOC Huizhou Refinery, PETROCHINA branches in Guangxi and Ningxia, and many more.
We prioritize customer profitability, dedicating ourselves to forging a reputation for excellence and brand supremacy. Our impeccable quality assurance and after-sales support systems ensure that SNT Valves stand beside our customers, collaboratively driving prosperity and success.
Audited Supplier 
){kind=link}