Innovative Self-Operated Pressure Regulator with Pressure Valve Technology with Nps3/4′′-Nps 12′′ for Nominal Diameter

• Customization: Available
• Temperature: Ordinary Temperature
• Certification: GS, RoHS, CE, ISO9001
• Model NO.: AOC-3111K
• Standard: Standard
• Connection Mode: Flange
• Power: Pneumatic
• Material: Stainless Steel
• Type: Self-Operated
• 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.
• Trademark: SNT
• Origin: China
• HS Code: 8481804090
• Production Capacity: 500000PCS/Year

Product Description

 

Product Description

_{Introducing the AOC-3000 Self-Operated Pressure Regulating Valve-an extraordinary executive product that operates independently without the need for external energy sources. Ingeniously utilizing the regulated medium's own energy, this valve seamlessly manages pressure in environments devoid of electricity or gas, offering remarkable energy savings. The adjustable pressure setting provides flexibility within a defined range, catering to your specific needs. Tailored for various process demands, the AOC-3000 is available in three distinct valve configurations: AOC-3111 (single-seated), AOC-3113 (sleeve), and AOC-3114 (double-seated), empowering users to select based on working conditions, including differential pressure, temperature, medium state, and leakage requirements. Furthermore, the AOC-3000 offers three actuator types: diaphragm (available in normal and reinforced variants), piston, and metal diaphragm (bellows), ensuring adaptability for diverse processes. With its fast-opening flow characteristics, this valve delivers exceptionally sensitive responses and precise adjustments (with an impressive error margin of ≤10%). Its compact design, compared to the bulky hammer-type pressure reducing valves, allows for easy installation and adjustment, making it a preferred choice in industries such as petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, civil construction, and more. It excels in gas, liquid, and steam applications for pressure reduction, stabilization (post-valve adjustment), relief, and stabilization (pre-valve adjustment), setting a benchmark for excellence in pressure management solutions.}
 

Actuator Features

 

Figure 1a showcases a sophisticated mechanism designed to manage the pressure in a post-control valve using a pressure-closed action mode. Here's the impressive process in action: As the medium makes its entrance into the valve body, guided by the direction of the arrow, it passes through the valve seat and spool, undergoing precise throttling. Simultaneously, it navigates through a pressure tube-enhanced with a condenser for steam mediums-and engages the actuator, activating the diaphragm. This orchestrated movement triggers a corresponding displacement of the spool, expertly calibrating the pressure reduction and stabilization. When the post-valve pressure surges, the diaphragm experiences an increased force, compressing the spring and driving the spool to expertly minimize the valve opening until equilibrium is restored. Conversely, should the pressure decline, the diaphragm's force diminishes, allowing the spring's reactionary push to expand the valve opening, ensuring pressure returns to the designated set value with unparalleled precision.

 

Figure 1b presents a regulator engineered to adeptly manage the pressure ahead of the valve, utilizing a pressure open action mode. Here's the process in detail: The medium flows into the valve body, aligning with the arrow's direction, and exits through the valve seat and spool, undergoing precise throttling. Concurrently, it travels through a pressure tube-optimized with a condenser for steam mediums-and influences the actuator, impacting the diaphragm. This dynamic interaction prompts a precise displacement of the spool, achieving flawless pressure relief and stabilization. In scenarios where pre-valve pressure increases, the diaphragm is subjected to intensified force, compressing the spring and driving the spool to amplify the valve opening, thus restoring pressure to the set value. Conversely, if the pressure dwindles, the diaphragm's force lessens, enabling the spring's reaction to contract the valve opening, effectively elevating the pressure to the desired level. Notably, when the pressure remains below the set value, the valve remains securely closed.
 

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 in regulating pressure of gas or low viscosity liquid media, the AOC-3111 type of self-operated pressure regulating valve by SNT Machinery (Qingdao) Co., Ltd. is recommended to be installed in an upright position on a horizontal pipe. However, if spatial constraints demand, it can be installed upside down or diagonally. In instances where the medium is confirmed to be clean, component part 3 can be omitted to streamline the installation process.

 

When dealing with steam or high viscosity liquid media, the AOC-3111 self-operated pressure regulating valve is optimally installed upside down on a horizontal pipe. This setup ensures the highest efficiency and stability in regulating challenging media.
 

Production application

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd stands as a pioneering producer of control valves, seamlessly integrating manufacturing, design, sales, and service into one cohesive powerhouse. Our journey commenced from a high starting point with rapid development. Nestled in the vibrant city of Qingdao, Shandong Province, our expansive facilities span over 42,000 square meters, boasting cutting-edge workshops and production equipment. As a high-tech enterprise, we possess independent intellectual property rights and have embraced advanced management and production techniques. Our dynamic team comprises over 150 dedicated professionals, with 15% specializing in R&D and 30% holding graduate or higher degrees. Driven by excellence in production management and innovative technological research, we produce vast quantities of superior quality valves utilized across petrochemical, oil, and coal chemical industries. Achieving a remarkable sales value nearing 100 billion in 2017, we continue to excel in our field.

SNT has proudly earned the TS Special Equipment Manufacturing Certificate and ISO 9001 certification, alongside the prestigious net qualification certificate from leading industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovation is cemented by numerous National Patents across various technologies. We possess the capability to design and manufacture a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By blending the strengths of globally renowned valves with our own pioneering R&D, we currently produce an extensive array of valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves, along with T Three-eccentric Center Butterfly Valves.
Our product lineup 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. Our diverse range of driving forms includes manual operation, power-driven, pneumatic, and hydraulic drive options. The primary materials utilized in our products are 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 operational temperatures extending from -196ºC to 1100ºC.

Leveraging advanced production technology and a robust quality assurance system, SNT Valves have gained widespread application across the petrochemical, oil, steel & iron, paper manufacturing, and power station sectors. Our esteemed clientele includes industry leaders such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Changling branch, and Jinan branch, among others.

We prioritize our users' profits, dedicating ourselves to establishing a reputation of unparalleled quality and a prestigious brand. Our impeccable quality assurance and comprehensive after-sales systems ensure that SNT Valves collaborate with all our valued customers to create mutual prosperity and success.