Pneumatic Efficient Self-Operated Pressure Regulator for Pressure Regulating Solutions From China
| US$50.00 - 200.00 | 1 Piece (MOQ) |
SNT Machinery (Qingdao) Co., Ltd.
Shandong, China
Last Login Date:
Sep 15, 2025
Main Products:
Ball Valves, Control Valves, Gate Valves, Butterfly Valves, Pneumatic Actuators, Self-Operated Valves, High Pressure and High Temperature Valves
Product Description
Company Info
Basic Info.
Product Description
Introducing the AOC-3000 Self-Operated Pressure Regulating Valve, a groundbreaking innovation from SNT Machinery (Qingdao) Co., Ltd. This executive marvel harnesses the medium's inherent energy to operate autonomously, eliminating the need for external power sources such as electricity or gas, thereby ensuring remarkable energy conservation. Its most striking feature is its ability to operate flawlessly in remote or off-grid locations. The pressure setting is easily adjustable within a specific range to suit diverse applications. Tailored to meet various industrial demands, the AOC-3000 is available in three distinct valve configurations: the AOC-3111, a single-seated valve; the AOC-3113, a sleeve valve; and the AOC-3114, a double-seated valve. Choose according to your specific operating conditions, be it differential pressure, temperature, medium state, or leakage requirements. The versatility continues with three actuator options: diaphragm (both normal and reinforced), piston, or metal diaphragm (bellows), catering to myriad process scenarios. Crafted with fast-opening flow characteristics, the AOC-3000 promises precise adjustment accuracy with minimal error (≤10%). Its compact design offers significant space savings compared to traditional heavy hammer-type pressure reducing valves, and its user-friendly adjustment makes it a preferred choice across industries such as petroleum, chemical, electric power, metallurgy, food processing, textiles, machinery manufacturing, and civil construction. This versatile valve adeptly handles gas, liquid, and steam pressure reduction, stabilization, relief, and more, making it indispensable for both post-valve and pre-valve applications.
Figure 1a: This sophisticated device artfully manages the pressure of the post-control valve through its pressure-closed action mode. Here's the fascinating mechanism: the medium majestically enters the valve body guided by the arrow, then gracefully exits via the valve seat and spool after a meticulous throttling process. Concurrently, the pressure tube-especially vital when dealing with steam combined with a condenser-channels the medium to engage the actuator, deftly manipulating the diaphragm. This interaction leads to the spool executing a precise movement, accomplishing both pressure reduction and stabilization. In scenarios where post-valve pressure escalates, an increased force upon the diaphragm compresses the spring, prompting the spool, and intuitively decreasing the valve's aperture until the pressure stabilizes to the pre-set threshold. Conversely, should the post-valve pressure dwindle, the diaphragm's influence diminishes, allowing the spring's reactive force to expand the valve's aperture, restoring pressure to its designated level.
Figure 1b: This innovative regulator adeptly manages pre-valve pressure through its pressure-open action mode. Observe the extraordinary principle: the medium enters the valve body, directed by the arrow, and makes its exit post-throttling through the valve seat and spool. Simultaneously, the pressure tube-especially critical when steam and condenser come into play-guides the medium towards the actuator, activating the diaphragm. This results in a well-coordinated spool displacement, achieving precise pressure relief and stabilization. When pressure before the valve escalates, a heightened diaphragm force compresses the spring, driving the spool to enhance the valve's opening until the pressure subsides to the desired level. Conversely, if the pre-valve pressure wanes, the diaphragm force diminishes, and the spring's reactive power reduces the valve opening to maintain equilibrium. Notably, the valve remains sealed if the preceding pressure is below the set parameter.
| 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) | |||||||||||||||||
| 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 | |||||||||
For the utmost efficiency and optimal performance, when deploying the valve in environments involving gas or low viscosity liquids, the AOC-3111 type self-operated pressure regulating valve is ideally set upright on a horizontal pipeline. However, should space constraints pose a challenge, alternative configurations such as upside down or diagonal installations are permissible. Notably, if the medium is verified as clean, the installation of part 3 can be deemed unnecessary.
In scenarios where steam or high viscosity liquids are present, the recommended installation for the AOC-3111 type self-operated pressure regulating valve is upside down on a horizontal pipeline, ensuring reliable functionality and superior regulation.
SNT Machinery (Qingdao) Co., Ltd. stands as a premier producer of state-of-the-art control valves, seamlessly integrating manufacturing, innovative design, comprehensive sales, and dedicated services into a singular powerhouse. Nestled in the vibrant city of Qingdao, Shandong province, our sprawling 42,000 square meters facility is a testament to modern engineering, complete with advanced workshops and cutting-edge production equipment. As a beacon of high-tech excellence, we boast independent intellectual property rights and leverage world-class management and production expertise. Our dynamic team comprises over 150 talented professionals, with an impressive 15% dedicated to research and development, while 30% are graduates with advanced degrees. With our robust production management team and pioneering technology, we specialize in the mass production of superior-quality valves, serving the petrochemical, oil, and coal chemical industries. Our remarkable sales achievements culminated in nearly 100 billion in revenue in 2017.
SNT has proudly secured the prestigious TS special equipment manufacturing certification and ISO 9001 accreditation, alongside the coveted net qualification certificates from industry giants SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Celebrated for our technological innovation, we hold numerous national patents. Our expertise spans the design and manufacture of an extensive range of valves, adhering to stringent international standards such as ANSI, API, DIN, BS, and JIS. By amalgamating the strengths of renowned valve designs worldwide with our proprietary research and development, we deliver an impressive array of offerings, 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.
Our comprehensive valve portfolio extends to V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogenic Valves, and more. These versatile products are available with diverse driving forms such as manual, power-driven, pneumatic, and hydraulic options. We utilize robust materials including A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M, offering specifications from 1/2" to 120", with working pressures of ANSI 150# to 2500#, and accommodating working temperatures ranging from -196ºC to 1100ºC.
Harnessing superior production technology and an unwavering quality assurance framework, SNT Valves are the trusted choice across a multitude of industries, including petrochemical, oil, steel & iron, paper manufacturing, and power generation. Our esteemed clientele features industry leaders such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and many more across various key locations.
At SNT, we prioritize our customers' success, dedicating ourselves to the creation of top-tier quality and a reputable brand. Our impeccable quality assurance and comprehensive after-sales support systems ensure that SNT valves consistently deliver value, fostering enduring partnerships and mutual prosperity with our esteemed clients.
