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 solution from SNT Machinery (Qingdao) Co., Ltd. This exceptional valve operates autonomously without the need for external energy sources, harnessing the very medium it regulates to perform flawlessly. Its standout feature is the ability to function in environments devoid of electricity or gas, making it an ideal energy-saving choice. The pressure settings can be effortlessly adjusted across a flexible range, catering to a myriad of applications. The AOC-3000 series offers versatility with three distinct valve designs tailored for diverse industrial needs: - AOC-3111: Single-Seated Self-Acting Pressure Regulating Valve - AOC-3113: Sleeve Self-Acting Pressure Regulating Valve - AOC-3114: Double-Seated Self-Acting Pressure Regulating Valve Select the perfect match for your operational requirements, considering factors like differential pressure, temperature, medium condition, and leakage specifications. To further enhance adaptability, the AOC-3000 is equipped with three types of actuators, ensuring precise performance across various conditions: - Diaphragm (available in both normal and reinforced versions) - Piston - Metal Diaphragm (Bellows) Experience unparalleled flow characteristics with fast-opening and highly sensitive actions, achieving an impressive adjustment accuracy of error ≤10%. The compact design of this valve, especially when compared to traditional heavy hammer-type pressure reducing valves, allows for easy installation and adjustment. Its wide application spectrum includes sectors such as petroleum, chemical, electric power, metallurgy, food, textile, machinery manufacturing, and civil construction. Whether you require pressure reduction, stabilization (post-valve adjustment), relief, or pre-valve stabilization, the AOC-3000 is your go-to solution for gas, liquid, and steam systems. Actuator Features
Figure 1a showcases a state-of-the-art mechanism designed to govern the pressure within the post-control valve system. This innovative valve operates on a pressure-closed principle. The process begins as the medium gracefully flows into the valve body following the arrow's guidance, where it undergoes ingenious throttling by the valve seat and spool. Meanwhile, an alternate path via the pressure tube, particularly when dealing with steam and condenser mediums, channels into the actuator, dynamically acting upon the diaphragm. This orchestrated interaction prompts the spool to transition, achieving a harmonious balance of pressure reduction and stabilization. Should the pressure post-valve surge, the diaphragm's force intensifies, subsequently compressing the spring, driving the spool to fine-tune the valve opening, ultimately restoring the pressure to its desired level. Conversely, if the post-valve pressure wanes, the diaphragm's force diminishes, enabling the spring's reactive force to guide the spool, enhancing the valve opening until the pressure reattains equilibrium.
Figure 1b unveils a sophisticated pressure regulator, masterfully engineered to manage pre-valve pressure with a pressure open-type functionality. As the medium enters the valve body following the arrow's directive, it is meticulously throttled by the valve seat and spool, setting the stage for pressure relief and stabilization. An additional route via the pressure tube, especially applicable to steam with a condenser, feeds into the actuator to influence the diaphragm dynamically. This interaction incites the spool's strategic displacement, fulfilling the dual purpose of pressure alleviation and stabilization. In instances where the pre-valve pressure escalates, the diaphragm's force amplifies, compressing the spring, thereby expanding the valve's aperture until the pressure aligns with the set parameter. Conversely, if the pre-valve pressure diminishes, the diaphragm's influence wanes, allowing the spring's reflex to modulate the spool, reducing the valve opening until the pressure meets the set standard. Should the pre-valve pressure drop below the designated level, the valve remains perpetually closed, ensuring optimal 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
The AOC-3111 type self-operated pressure regulating valve offers exceptional versatility for use in gas or low viscosity liquid media! It is typically mounted upright on a horizontal pipe, ensuring optimal performance. In cases where spatial constraints exist, this remarkable valve can be ingeniously installed upside down or even diagonally, providing flexible integration into any system. Notably, when the medium is confirmed to be clean, the installation of part 3 can be elegantly omitted, simplifying the process further.
For applications involving steam or high viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve is adeptly installed upside down on a horizontal pipe. This strategic positioning ensures maximum efficiency and performance, catering perfectly to the demanding requirements of such challenging media.
Production application
Company Profile
SNT Machinery (Qingdao) Co., Ltd stands as a distinguished leader in the production of high-quality control valves, seamlessly integrating manufacturing, design, sales, and services under one roof. With a commitment to excellence from inception, SNT has rapidly evolved, strategically based in Qingdao, Shandong province, sprawling over a vast expanse of 42,000 square meters. Our state-of-the-art facilities boast modern workshops and cutting-edge production equipment. As a beacon of innovation, we pride ourselves on being a high-tech enterprise, empowered by independent intellectual property rights and enriched by imported advanced management and production expertise. Our dedicated team comprises over 150 skilled professionals, with 15% specializing in R&D, and 30% holding graduate or higher degrees. Anchored by a highly competent production management team and pioneering technology, we manufacture a diverse array of high-caliber valves for the petrochemical, oil, and coal chemical industries. Our success is reflected in a remarkable sales value nearing 100 billion in 2017.
SNT proudly boasts prestigious certifications including the TS Special Equipment Manufacturing Certificate and ISO 9001, alongside the esteemed net qualification certificates from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our technological prowess is further validated by numerous National Patents. Equipped with the capability to design and manufacture a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards, we harmonize global valve advantages with our innovative R&D efforts. Our extensive product line features an array of valves, 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, complemented by V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Cryogenic Valves, and more. Our versatile range supports various driving forms, including manual operation, power-driven, pneumatic, and hydraulic drives. We employ top-grade materials such as A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, ensuring durability across specifications from 1/2" to 120", withstanding working pressures from ANSI 150# to 2500#, and temperatures ranging from -196ºC to 1100ºC.
Leveraging our advanced production technology management and robust quality assurance system, SNT Valves have found extensive applications across petrochemical, oil, steel & iron, paper manufacturing, and power station industries. Our esteemed clientele includes industry leaders like SINOPEC QILU Branch, SINOPEC Qingdao Branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi Branch, PETROCHINA Ningxia Branch, SINOPEC Qingdao Refinery, and more, underscoring our reputation for reliability and excellence.
Prioritizing our clients' profitability, we are dedicated to fostering exceptional quality and a reputable brand. Our flawless quality assurance and comprehensive after-sales systems ensure that SNT Valves collaborate with customers, paving the way for mutual success and 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.
