Premium Self-Operated Pressure Regulator for CF8m and Zg0cr18ni12mo2ti

• Customization: Available
• Temperature: Ordinary Temperature
• Certification: GS, RoHS, CE, ISO9001
• Model NO.: AOC-3111B
• Standard: Standard
• Connection Mode: Flange
• Power: Pneumatic
• Type: Self-Operated
• Connections: Butt Welding
• 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

Mounting Method

 

For optimal performance in applications involving gas or low viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve from SNT Machinery (Qingdao) Co., Ltd. is designed to be installed in an upright position on a horizontal pipe. Should spatial constraints pose a challenge, the unit can also be positioned either upside down or diagonally. Notably, if the medium is confirmed to be clean, the installation of part 3 can be optionally omitted, ensuring seamless operation and flexibility.

 

In cases where the valve is deployed within steam or high viscosity liquid media environments, the AOC-3111 type self-operated pressure regulating valve is optimized for upside-down installation on a horizontal pipe. This strategic placement enhances the valve's efficiency and longevity, providing industry-leading performance tailored to meet demanding operational requirements.

 

Product Description

_{Introducing the groundbreaking AOC-3000 Self-Operated Pressure Regulating Valve, a powerhouse of innovation in the realm of pressure regulation. This remarkable product from SNT Machinery (Qingdao) Co., Ltd. operates autonomously, requiring no external energy, as it harnesses the power of the regulated medium itself. Imagine a world where electricity or gas is unnecessary for operation, and energy is conserved effortlessly! The AOC-3000 provides this revolutionary solution, allowing pressure settings to be adjusted flexibly within certain ranges. It's designed to adapt to diverse process requirements, available in three distinct valve configurations tailored to your specific needs: AOC-3111 (single-seated), AOC-3113 (sleeve), and AOC-3114 (double-seated) self-acting pressure regulating valves. Choose the ideal configuration based on working conditions such as differential pressure, temperature, medium state, and leakage prerequisites. Furthermore, the AOC-3000 offers three types of actuators to meet varied process situations, including diaphragm (standard and reinforced), piston, and metal diaphragm (bellows), ensuring superior performance and reliability. Engineered with fast-opening flow characteristics, this valve boasts sensitive responses and exceptional adjustment precision (error ≤10%). Its compact design, significantly smaller than traditional heavy hammer type pressure reducing valves, makes it incredibly easy to adjust and invaluable across a multitude of industries. From petroleum and chemical processing to electric power, metallurgy, food, light textile, machinery manufacturing, civil construction, and beyond, the AOC-3000 excels in regulating gas, liquid, and steam pressure reduction, stabilization (both post-valve and pre-valve adjustment), and pressure relief. Experience a new era of efficiency and reliability with the AOC-3000, the future of pressure regulation.}
 

Actuator Features

 

Figure 1a illustrates the masterful engineering behind the post-control valve pressure regulator, operating in a pressure-closed mode. The action principle is ingeniously designed: as the medium flows into the valve body, following the arrow's guidance, it is splendidly regulated by the valve seat and spool through meticulous throttling. Simultaneously, the medium-augmented by a condenser if steam-is channeled via the pressure tube into the actuator, which exerts pressure upon the diaphragm. This nuanced interaction induces a strategic displacement of the spool, achieving precise pressure reduction and stabilization. Should the downstream pressure rise, the diaphragm experiences increased force, compressing the spring and moving the spool, thereby constricting the valve opening to maintain the desired pressure level. Conversely, a decrease in downstream pressure reduces the diaphragm's force, allowing the spring's counteraction to enhance valve opening until equilibrium is restored.

 

Figure 1b showcases a sophisticated regulator designed to manage the pressure preceding the valve, employing a pressure-open mode. The operational principle is artfully crafted: as the medium enters the valve body, directed by the arrow, it undergoes precise regulation by the valve seat and spool via throttling. Concurrently, the medium, when combined with a condenser in the case of steam, is directed through the pressure tube into the actuator, influencing the diaphragm. This interaction prompts a deliberate spool displacement, facilitating pressure relief and stabilization. An increase in upstream pressure amplifies the force on the diaphragm, compressing the spring and expanding the valve opening until the upstream pressure stabilizes at the set level. If the upstream pressure decreases, the force on the diaphragm diminishes, and the spring's reactive power subtly narrows the valve opening until balance is achieved. Notably, if the upstream pressure is below the set threshold, the valve remains shut.
 

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

 

Production application

 

 

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd. stands at the forefront as a distinguished producer of superior control valves, seamlessly integrating manufacturing, design, sales, and exceptional services under one roof. Emerging from a high starting point, SNT has rapidly developed into a leading force in the industry. Nestled in the vibrant city of Qingdao, within the picturesque Shandong province, our expansive facility spans 42,000 square meters, boasting state-of-the-art workshops and cutting-edge production equipment. As a high-tech enterprise, we proudly possess independent intellectual property rights and have embraced advanced management and production expertise from across the globe. Our dynamic team consists of over 150 dedicated professionals, with 15% specializing in R&D and 30% holding graduate or higher degrees. Driven by an unwavering commitment to quality and innovation, we specialize in producing high-quality valves extensively utilized in the petrochemical, oil, and coal chemical industries. Our remarkable achievements include attaining a sales value nearing 100 billion in the year 2017.

SNT has proudly acquired the TS special equipment manufacturing certificate and ISO 9001, alongside prestigious net qualification certifications from industry leaders SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our pioneering advancements have been recognized with numerous national patents, reflecting our commitment to technological innovation. We offer comprehensive design and manufacturing services for a complete range of valves tailored to meet ANSI, API, DIN, BS, and JIS standards. By amalgamating the strengths of renowned global valve technologies with our proprietary research and development, we excel in producing an extensive array of valves including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves. Our expertise extends to manufacturing T Three-eccentric Center Butterfly Valves.
Our portfolio includes 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 various driving forms, our valves cater to manual operations as well as power-driven, pneumatic, and hydraulic drives. We meticulously select premium materials such as A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M to craft our products. Our specifications range from 1/2" to 120", withstanding working pressures between ANSI 150# and 2500#, and operating efficiently in temperatures from as low as -196ºC to as high as 1100ºC.

Leveraging advanced production technologies and a robust quality assurance system, SNT Valves have garnered widespread acclaim across numerous industries, including petrochemical, oil, steel & iron, paper manufacturing, and power station sectors. We proudly serve a distinguished clientele, encompassing SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and SINOPEC Changling branch, among others. Our dedication to excellence has positioned SNT as a trusted partner for leading corporations.

At SNT, we prioritize our users' success by wholeheartedly committing to the establishment of impeccable quality and a reputable brand. Our comprehensive quality assurance and after-sales systems are meticulously crafted to ensure that SNT valves seamlessly integrate with our customers' operations, fostering mutual growth and prosperity. Together, we strive to create a future of shared success and boundless opportunities.