AOC-9031 Series Single Parallel Sliding Gate Valves (also known as flat gate valves) are one of the important types of control valves in the production process. Single Parallel Sliding Gate Valves have excellent opening and closing characteristics, featuring full bore, low flow resistance, good sealing performance, and easy operation. They are suitable for the transportation pipelines and storage equipment of refined oil products, wellhead devices for oil and natural gas extraction, and pipelines for media containing suspended particles and fibers.
AOC-9032 Series Double Parallel Sliding Gate Valves are also an important type of control valve in the production process. These valves adopt a unique metal contact structure, ensuring reliable operation and extremely high cut-off performance. They are widely used in emergency shut-off valves, vent valves, or large-diameter control valves under high-temperature, high-pressure, and extremely low-temperature conditions. Applications include transportation pipelines and storage equipment for refined oil products, wellhead devices for oil and natural gas extraction, pipelines for media containing suspended particles and fibers, independent steam turbine feed systems, and harsh conditions involving high-temperature and high-pressure 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. The gate does not have a guide hole, resulting in a compact structure, small size, and lightweight valve.
2. The gate can be designed with V-shaped, semi-circular, or pentagonal channels, providing the valve with regulating capabilities to adjust to any opening degree and meet the flow requirements of pipeline systems (see the right diagram).
3. The two valve seats are floating and have a soft-hard composite seal, ensuring a long service life. When the internal cavity pressure of the valve abnormally rises, the floating valve seat can automatically release the high pressure into the pipeline.
4. Grease injection valves are provided at the external seats of the valve body. During use, if leakage occurs due to seal pair wear, sealing grease can be injected here to prevent valve leakage.
5. A drain valve is provided at the bottom of the valve body to discharge accumulated impurities inside the valve.
Guided Gate Structure Diagram
1. When the valve is fully open, the guide hole in the gate aligns with the valve body channel to form a straight pipe section, allowing direct media purging (see above diagram).
2. During the gate's opening or closing travel, the valve seat always contacts and fits the gate. The soft valve seat can automatically scrape impurities off the gate during operation, making the flat gate valve suitable for media with suspended particles and fibers, while preventing seal surface damage from valve body thermal deformation.
3. The two valve seats are floating and have a soft-hard composite seal, ensuring a long service life.
4. When the valve cavity pressure abnormally rises, the floating valve seat can automatically release the high pressure into the pipeline.
5. A drain valve is provided at the bottom of the valve body to discharge accumulated impurities inside the valve.
SNT Machinery(Qingdao) Co. , Ltd is a producer of control valves, combines manufacturing, designing, sales and services in one. It has high starting point quick development SNT is located in Qingdao, Shandong province with an area for 42000m2, equipped with modern workshop and production equipment. It is a high-tech enterprise with independent intellectual property rights and imported advanced management and production experience. Now it has more than 150 workers, and R&D specialist accounts for 15%, graduates or with higher degrees account for 30%. Depending on high quality production management team and innovative technology research and development, now we produce large quantities of high quality vales used in petrochemical, oil and coal chemical industries. We have a sales value to nearly 100billion in the year 2017.
Now SNT has got the TS special equipment manufactuuring certificate and ISO 9001, and has acquired the net qualification certificate of SINOPEC,CNOOC, PETROCHINA and SINOCHEM. And we have got the National Patent in many technologies. We can design and manufacture all series of valves according to ANSI, API, DIN, BS, JIS standards. Combining the advantages of famous valves all cross the world and with independent research and development, until now we can manufacture all kinds of valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, T Three-eccentric Center Butterfly
Valves, V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogennic Valves tc, Driving form includes manual operation, power-drinven, pneumantic and hydraulic drive. Materials for main parts are A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M etc. Specification 1/2"~120", working pressure ANSI 150#~2500#, working temperature -196ºC~1100ºC.
Relying on advanced production technology management and qulity assurance system, SNT Valves have been widely used in petrochemical, oil, steel&iron, paper manufacturing and power station industries. Our customers include SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINC Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Changling branch, Jinan branch etc.
We make user's profits as our priority, devoting ourselves to the establishment of excellent quality and good brand, Our perfect quality assurance and after-sales systems guarantee that SNT valves join hands with all our customers and creat prosperity.
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