Basic Info.
Temperature
Ordinary Temperature
Certification
GS, RoHS, CE, ISO9001
Media
Gas, Oil, Water, Acid
Connections
Butt Welding/Flange
Valve Body Materials
A216 Wcb/A351 CF8/CF3/CF8m/CF3m/Zg230-450
Body Materials
Zg0cr18ni9ti/Zg0cr18ni12mo2ti
Spool Materials
304ss/316ss/304lss/316lss/1Cr18Ni9/0cr18ni12mo2t
Valve Seat Materials
304ss/316ss/304lss/316lss/1Cr18Ni9/0cr18ni12mo2ti
Stem Materials
304ss/316ss/304lss/316lss/1Cr18Ni9/1Cr18Ni9
Rubber Diaphragm Materials
Nitrile/Ethylene/Fluoro/Oil Resistant Rubbe
Membrane Cover Materials
Q235/Q235/Painting PTFE
Packing Materials
Polytetrafluoroethylene/Flexible Graphite
Flow Characteristic
Come on
Service Temperature
-60~350degree
Allowable Leakage
Class IV for Hard Seal/ Class VI for Soft Seal
Flange Standard
GB/T9113-2000jb/T79.1-94/Jb/T79.2-94/Hg20592~Hg
Flange Sealing Surface Type
Pn16 for Convex Flange/Pn25 for Convex Flangepn40
Flange End Distance Standard
GB12221-89
Transport Package
Wooden Box and Cardboard Box.
Product Description
Product Description
Introducing the AOC-3000 Self-Operated Pressure Regulating Valve - a revolutionary product that epitomizes the finest in energy efficiency and autonomous operation. This executive marvel eliminates the need for external energy, harnessing the power of the regulated medium itself to perform its task flawlessly. Its crowning feature is the ability to function seamlessly in environments devoid of electricity or gas, significantly contributing to energy conservation. Effortlessly modify the pressure settings within a designated range, granting unparalleled flexibility. The AOC-3000 series is meticulously designed to cater to diverse process environments, offering three distinct valve configurations: AOC-3111 (single-seated), AOC-3113 (sleeve), and AOC-3114 (double-seated) self-acting pressure regulating valves. Customize your choice based on working conditions, such as differential pressure, temperature, medium state, and specific leakage requirements. Further enhancing its versatility, the AOC-3000 series provides three actuator variants: diaphragm (both standard and reinforced), piston, and the robust metal diaphragm (bellows). With its swift-opening flow characteristics, the valve is engineered for rapid response and boasts exceptional adjustment precision (with an error margin of ≤10%). Compact and efficient, it occupies minimal space compared to traditional heavy hammer-type pressure reducing valves. Seamlessly adjustable, it finds widespread application in numerous sectors, including petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, and civil construction, effectively managing gas, liquid, and steam for pressure reduction, stabilization, and relief, both pre- and post-valve. Actuator Features
Figure 1a showcases the sophisticated control system designed for the post-control valve pressure regulator, featuring a pressure-closed type valve action mode. The valve operates on the following principle: as the medium gracefully flows into the valve body following the arrow's direction, it is meticulously throttled and then elegantly released by the valve seat and spool. Through the pressure tube, when dealing with steam and a condenser, the medium skillfully navigates into the actuator, engaging with the diaphragm. This interaction orchestrates a precise spool displacement, culminating in the dual achievement of pressure reduction and stabilization. In scenarios where the pressure escalates post-valve, the force on the diaphragm intensifies, compressing the spring and directing the spool to subtly decrease the valve opening, ensuring the pressure is deftly adjusted to the set value. Conversely, should the pressure decrease behind the valve, the resultant force on the diaphragm diminishes, allowing the spring's reaction force to gracefully drive the spool, expanding the valve opening until the desired pressure equilibrium is restored.
Figure 1b illustrates the innovative regulator tailored for managing the pressure ahead of the valve, embodying a pressure open type valve action mode. The operational principle is as follows: the medium enters the valve body smoothly from the indicated arrow direction, experiencing precise throttling before being efficiently outputted by the valve seat and spool. When interfaced with steam and a condenser, the medium elegantly channels through the pressure tube into the actuator, engaging with the diaphragm. This interaction triggers a calculated spool displacement, achieving both pressure relief and stabilization. When pressure increases ahead of the valve, the diaphragm experiences heightened force, compressing the spring and propelling the spool to widen the valve opening, ensuring optimal pressure adjustment. Conversely, should the pressure decrease in front of the valve, the diaphragm force reduces, and the spring's reaction force drives a reduction in the valve opening, maintaining balance until the pressure rises to the set value. Should the pressure remain below the established threshold, the valve remains steadfastly closed, safeguarding system integrity. Product Parameters
| nominal diameter DN(mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| rated flow coefficient KV | 5.8 | 11 | 12.5 | 20 | 32 | 50 | 80 | 125 | 160 | 320 | 450 | 630 | 900 |
rated stroke
(mm) | 8 | 10 | 12 | 15 | 18 | 20 | 30 | 40 | 45 | 60 | 65 |
| nominal diameter DN(mm) | 20 (or G3/4'') |
| Valve seat diameter | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 12 | 15 | 20 |
| rated flow coefficient KV | 0.02 | 0.08 | 0.12 | 0.20 | 0.32 | 0.5 | 0.80 | 1.20 | 1.80 | 2.80 | 4.0 | 5.8 |
| nominal pressure PN | Mpa | 1.6, 2.5, 4.0,6.4(6.3) /2.0, 5.0, 11.0 |
| Bar | 16, 25, 40, 64(63)/20, 50, 110 |
| Lb | ANSI: Class150,Class300,Class600 |
| pressure segment range KPa | 15~50,40~80,60~100,80~140,120~180,160~220,200~260,
240~300,280~350,330~400,380~450,430~500,480~560,
540~620,600~700,680~800,780~900,880~1000,900~1200,
1000~1500,1200~1600,1300~1800,1500~2100,
(Other Scope Special Design) |
| flow characteristic | Come on. |
| regulation accuracy | ±5-10(%) |
| service temperature | -60~350ºC (Special design below -60ºC) 350~550ºC |
| allowable leakage | Class IV (hard seal) Class VI (soft seal)(GB/T4213-08) |
| (/decompression ratio (Inlet pressure/Outlet pressure) | 1.25~10( special design beyond this range) |
Product Dimensions
| Nominal diameter(DN) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| Length of the receiver tube (B) | 383 | 512 | 603 | 862 | 1023 | 1380 | 1800 | 2000 | 2200 |
| Flange face distance L(PN16,25,40) | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 |
| Flange face distance L(PN64) | 230 | 260 | 300 | 340 | 380 | 430 | 500 | 550 | 650 | 775 | 900 |
Pressure adjustment range
KPa | 15~140 | H | 475 | 520 | 540 | 710 | 780 | 840 | 880 | 940 | 950 |
| A | 280 | 308 |
| 120~300 | H | 455 | 500 | 520 | 690 | 760 | 800 | 870 | 900 | 950 |
| A | 230 |
| 280~500 | H | 450 | 490 | 510 | 680 | 750 | 790 | 860 | 890 | 940 |
| A | 176 | 194 | 280 |
| 480~1000 | H | 445 | 480 | 670 | 740 | 780 | 780 | 850 | 880 | 930 |
| A | 176 | 194 | 280 |
(Kg)
PN16Weight (Kg)
PN16 as an example | 26 | 37 | 42 | 72 | 90 | 112 | 130 | 169 | 285 | 495 | 675 |
Mounting Method
For optimal functionality in gas or low-viscosity liquid applications, the AOC-3111 self-operated pressure regulating valve by SNT Machinery (Qingdao) Co., Ltd. is best positioned upright on a horizontal pipeline. This standard installation ensures precise regulation and peak performance. However, should spatial constraints arise, the valve can be adeptly installed either upside down or at an angle. Note: If the medium is verified as clean, omitting part 3 is permissible to streamline the process.
In scenarios involving steam or high-viscosity liquid media, the AOC-3111 self-operated pressure regulating valve from SNT Machinery (Qingdao) Co., Ltd. is ideally mounted upside down on a horizontal pipeline. This configuration is crucial to effectively manage the complexities and demands of such media, ensuring reliable pressure control.
Production application
Company Profile
SNT Machinery (Qingdao) Co., Ltd stands as a beacon of innovation and excellence in producing control valves, effortlessly integrating manufacturing, design, sales, and service into one streamlined operation. With a high starting point and rapid development, SNT is strategically situated in Qingdao, Shandong province, sprawling over an expansive area of 42,000 square meters, featuring state-of-the-art workshops and production equipment. As a high-tech enterprise boasting independent intellectual property rights, we blend imported advanced management and production experiences. Our dedicated team of over 150 professionals includes a robust 15% of R&D specialists and a significant 30% holding graduate or higher degrees. Leveraging a top-tier production management team and cutting-edge research and development, we consistently deliver vast quantities of superior quality valves, serving the petrochemical, oil, and coal chemical industries with distinction. Our achievements are evident in reaching nearly 100 billion in sales value in 2017 alone.
SNT has proudly secured the TS special equipment manufacturing certificate and ISO 9001 accreditation, alongside obtaining the net qualification certificate from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovative spirit is further validated with numerous National Patents across various technologies. We expertly design and manufacture a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By amalgamating the best features of world-renowned valves with our independent research and development, we produce an extensive variety of valves, ranging from GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, to Angle-regulating Valves, Eccentric Rotary Valves, and T Three-eccentric Center Butterfly Valves.
Our diverse product lineup extends to 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. Driving mechanisms encompass manual operation, power-driven, pneumatic, and hydraulic drives, while main components are crafted from top-grade materials like A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. Our specifications range from 1/2" to an impressive 120", accommodating working pressures from ANSI 150# to a robust 2500#, and functional at temperatures spanning -196ºC to 1100ºC.
Thanks to our advanced production technology management and rigorous quality assurance systems, SNT valves have found their place in diverse sectors such as petrochemical, oil, steel & iron, paper manufacturing, and power station industries. Our esteemed clientele includes notable names like SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, and many more, showcasing our extensive market reach and reliability.
At SNT, prioritizing customer profits is our mission, as we commit ourselves to establishing unmatched quality and a reputable brand. Our impeccable quality assurance and comprehensive after-sales systems ensure that SNT valves not only meet but exceed customer expectations, forging a path to shared prosperity.
Address:
Shiao International 1602, Shinan District, Qingdao, Shandong, China
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components
Management System Certification:
ISO 9001, ISO 20000, IATF16949, HSE
Company Introduction:
SNT Machinery(Qingdao)Co., Ltd. Stands as a leading authority in control valve manufacturing. Based in the strategic hub of Qingdao, Shandong province, our sprawling 42, 000m² Facility is outfitted with cutting-edge workshops and advanced production equipment. As a high-tech enterprise, we take pride in owning independent intellectual property rights and implementing cutting-edge international management and production techniques. Our team of over 150 dedicated professionals includes 15% R&D specialists and 30% with graduate degrees or higher. This commitment to excellence and innovation enables us to produce a diverse array of top-tier valves, widely utilized across the petrochemical, oil, and coal chemical industries. In an impressive milestone, our sales neared 100 billion in 2017. SNT proudly holds the prestigious TS special equipment manufacturing certificate and ISO 9001 certification. We are honored to possess net qualification certificates from industry titans including SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our technological prowess has garnered us multiple national patents. We design and manufacture an extensive range of valves adhering to stringent ANSI, API, DIN, BS, and JIS standards. By merging the finest attributes of world-renowned valves with our innovative R&D, we offer a comprehensive portfolio featuring GLOBE Valves, High-Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and beyond.
Our product lineup showcases V Ball Valves, High Wear-resistant Ball Valves, High-Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves, available in manual, electric, pneumatic, and hydraulic driving forms. We use premium materials such as A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. Our specifications range from 1/2" to 120" in size, accommodating working pressures from ANSI 150# to 2500# and operating temperatures from -196º C to 1100º C. Utilizing our advanced production technology, precise management, and robust quality assurance systems, SNT valves earn trust across diverse industries including petrochemical, oil, steel, iron, paper manufacturing, and power stations. Our esteemed clientele features SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, among others. At SNT, we are devoted to maximizing customer profitability by consistently delivering superior quality and establishing a reputable brand. Our unwavering commitment to comprehensive quality assurance and exemplary after-sales services ensures that SNT valves cultivate enduring partnerships with our clients, driving mutual success and long-term prosperity.
