Flanged Automatic Self-Operated Pressure Regulator with CF3m Valve Body with DN20-DN300 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, 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.