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
Discover the innovative AOC-3000, a premier self-operated pressure regulating valve expertly crafted by SNT Machinery (Qingdao) Co., Ltd. This cutting-edge product boasts autonomous efficiency, powered by the intrinsic energy of the regulated medium, eliminating the need for any external power sources. Perfectly designed for locations devoid of electricity or gas, this regulator not only saves energy but also offers unparalleled versatility with adjustable pressure settings within a specified range. Tailored to meet diverse process demands, the AOC-3000 comes in three distinct valve forms: - 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 ideal option based on your specific requirements, including differential pressure, temperature, medium state, and leakage considerations. Moreover, the AOC-3000 offers three actuator types to suit various operational needs: - Diaphragm (normal and reinforced) - Piston - Metal diaphragm (bellows) This model features fast-opening flow characteristics, ensuring responsiveness and exceptional adjustment precision with an error margin of no more than 10%. Its compact design outshines traditional heavy hammer pressure reducing valves, making it easy to adapt and install across a variety of industries. Widely utilized in petroleum, chemical, electric power, metallurgy, food production, light textile, machinery manufacturing, and civil construction, the AOC-3000 excels in managing gas, liquid, and steam for pressure reduction, stabilization (both post- and pre-valve), and relief applications. Actuator Features
Figure 1a illustrates the masterful control of the post-control valve pressure regulator, boasting a pressure-closed operation mode. Here's the fascinating principle at work: As the medium enters the valve body, following the directional arrow, it elegantly passes through the valve seat and spool, experiencing a precise throttling process. Meanwhile, an alternate route via the pressure tube allows the medium (when steam is accompanied by a condenser) to engage the actuator and influence the diaphragm. This interaction prompts the spool to adjust its position, ensuring perfect pressure reduction and stabilization. In the event of an increase in pressure post-valve, the diaphragm senses this change, compresses the spring, and guides the spool to diminish the valve's opening until equilibrium is restored at the pre-set pressure level. Conversely, should the pressure drop, the diaphragm's reduced force allows the spring's reaction to expand the valve's opening, maintaining the desired pressure level.
Figure 1b showcases the regulator's prowess in managing pre-valve pressure, adopting a pressure-open operation mode. The medium, entering from the designated arrow direction, gracefully traverses through the valve seat and spool, undergoing calculated throttling. Simultaneously, it channels through the pressure tube (aligned with steam and condenser use) to activate the actuator, impacting the diaphragm and causing the spool to adjust, achieving a state of pressure relief and stabilization. As pre-valve pressure escalates, the diaphragm's heightened force compresses the spring, prompting the spool to widen the valve's opening until the pressure is harmonized to the set parameter. Should the pressure recede, the diaphragm's diminished force enables spring tension to coax the spool into reducing the valve opening, steadily reinstating the desired pressure. When pre-valve pressure falls below the set threshold, the valve remains resolutely closed, ensuring optimal safety and functionality. 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 performance when regulating gas or low-viscosity liquid media, the AOC-3111 self-operated pressure regulating valve should ideally be mounted upright on a horizontal pipeline. Should spatial constraints arise, alternative positions like upside down or diagonal installations are permissible. Notably, in situations where the medium is verified as clean, the installation of part 3 becomes optional.
In applications involving steam or high-viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve is best positioned upside down on a horizontal pipeline. This setup ensures efficient functionality and consistent performance in handling challenging mediums.
Production application
Company Profile
SNT Machinery (Qingdao) Co., Ltd is a premier producer of control valves, seamlessly blending manufacturing, design, sales, and services under one roof. With a strong foundation and rapid development, SNT is strategically positioned in Qingdao, Shandong Province, spanning over 42,000 square meters. Our state-of-the-art facilities house modern workshops and cutting-edge production equipment. Proudly, we're a high-tech enterprise boasting independent intellectual property rights and have embraced advanced international management and production expertise. Our dedicated team comprises over 150 skilled workers, with 15% engaged in R&D and 30% holding graduate or higher degrees. By leveraging a high-caliber production management team and pioneering technology research, we manufacture substantial volumes of superior quality valves for the petrochemical, oil, and coal chemical sectors. In 2017, we achieved an impressive sales value approaching 100 billion.
SNT has proudly secured the TS special equipment manufacturing certificate and the esteemed ISO 9001 accreditation. We possess the net qualification certificates from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM, along with national patents in numerous technologies. Our design and manufacturing capabilities span the comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By synthesizing the strengths of renowned global valves and focusing on independent R&D, we expertly craft an array of valve types, including GLOBE Valves, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and Three-eccentric Center Butterfly Valves.
Our extensive valve selection also features V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogenic Valves, and more. Our drive forms encompass manual, power-driven, pneumatic, and hydraulic operation. Key materials include A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, among others. Our specifications range from 1/2" to 120", with working pressures from ANSI 150# to 2500#, and temperature capabilities from -196ºC to 1100ºC.
Leveraging advanced production technologies and a robust quality assurance system, SNT Valves are extensively deployed in petrochemical, oil, steel & iron, paper manufacturing, and power station industries. Our prestigious clientele includes esteemed branches such as SINOPEC QILU, SINOPEC Qingdao, CNOOC Huizhou Refinery, PETROCHINA Guangxi, PETROCHINA Ningxia, and many more.
At SNT, we prioritize our users' profitability, dedicating ourselves to building an exceptional quality brand. Our impeccable quality assurance and after-sales systems ensure that SNT valves forge prosperous partnerships with all our valued customers.
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.
