Innovative Self-Operated Pressure Regulator with CF8m and A216 Wcb

• 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 gas or low viscosity liquid media, the AOC-3111 self-operated pressure regulating valve by SNT Machinery (Qingdao) Co., Ltd. should ideally be installed in an upright position on a horizontal pipe. However, if space constraints arise, feel free to position it upside down or at an angle. Notably, if the medium is confirmed to be clean, part 3 installation can be omitted, ensuring a streamlined process.

 

In scenarios involving steam or high viscosity liquid media, the versatile AOC-3111 self-operated pressure regulating valve should generally be mounted upside down on a horizontal pipe. This configuration ensures optimal performance and efficiency, maintaining the high standards associated with SNT Machinery (Qingdao) Co., Ltd.'s innovative product line.

 

Product Description

_{Introducing the AOC-3000: a revolutionary self-operated pressure regulating valve that redefines efficiency and reliability. This cutting-edge executive product operates independently, drawing upon the energy of the regulated medium itself, eliminating the need for external power sources such as electricity or gas. Its standout feature is its capacity to function seamlessly in environments devoid of conventional energy sources, thus contributing significantly to energy conservation efforts. With the flexibility to adjust pressure settings within a specified range, the AOC-3000 promises adaptability across various applications. Tailored to meet diverse industrial requirements, the AOC-3000 is offered 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 Each design empowers users to select the ideal solution based on specific working conditions such as differential pressure, temperature, medium state, and leakage parameters. Furthermore, the AOC-3000 caters to different process demands with three actuator types: - Diaphragm (available in normal and reinforced variants) - Piston - Metal diaphragm (bellows) The AOC-3000 boasts a swift-opening flow characteristic, ensuring responsive operation and remarkable adjustment precision (with an error margin of ≤10%). Its compact design, when compared to traditional heavy hammer pressure reducing valves, simplifies adjustments and installation. This versatility makes it an invaluable asset across a wide array of industries, including petroleum, chemical, electric power, metallurgy, food processing, light textiles, machinery manufacturing, and civil engineering. Whether the task is pressure reduction, stabilization (post-valve adjustment), relief, or pre-valve stabilization, the AOC-3000 delivers unparalleled performance for gas, liquid, and steam regulation.}
 

Actuator Features

 

Figure 1a showcases a cutting-edge mechanism designed to expertly control the pressure of the post-control valve through a pressure-closed mode. The mechanism operates on a sophisticated principle: the medium seamlessly enters the valve body in line with the direction of the arrow, subsequently passing through the valve seat and spool to undergo precision throttling. Simultaneously, a secondary pathway via the pressure tube (complete with steam and condenser) directs the medium into the actuator, where it exerts force on the diaphragm. This interaction prompts a strategic displacement of the spool, effectively reducing and stabilizing pressure. In scenarios where post-valve pressure escalates, an increased diaphragm force compresses the spring, thereby driving the spool to narrow the valve opening until equilibrium is restored at the pre-set pressure level. Conversely, a decline in post-valve pressure results in diminished diaphragm force, allowing the spring's reaction force to expand the valve opening, ensuring pressure reassumes the designated level.

 

Figure 1b illustrates a regulator ingeniously designed to manage the pressure preceding the valve through a pressure-open mode. The operation follows an intricate principle: the medium flows seamlessly into the valve body as indicated by the arrow, proceeding through the valve seat and spool for precise throttling. Concurrently, a pathway via the pressure tube (accompanied by steam and condenser) channels the medium into the actuator, acting upon the diaphragm to instigate a strategic spool displacement, ensuring pressure relief and stability. When pressure before the valve escalates, the diaphragm's increased force compresses the spring, prompting the spool to widen the valve opening until the pressure subsides to the set value. Conversely, a decrease in pre-valve pressure reduces diaphragm force, allowing the spring's reaction to narrow the valve opening, thus elevating pressure to the desired level. Should pre-valve pressure fall below the set threshold, the valve remains securely closed, maintaining optimal control.
 

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 is a prestigious innovator in the realm of control valves, seamlessly integrating manufacturing, design, sales, and services into one cohesive unit. With a strategic location in Qingdao, Shandong province, SNT spans an expansive 42,000 square meters, housing state-of-the-art workshops and production facilities. As a high-tech enterprise, it stands distinguished by its independent intellectual property rights and the assimilation of advanced global management and production expertise. Our dynamic workforce exceeds 150 dedicated professionals, with 15% being R&D specialists and 30% holding graduate or higher degrees. Driven by a commitment to high-quality production management and cutting-edge R&D, our extensive range of valves caters to the demanding needs of the petrochemical, oil, and coal chemical industries, achieving a remarkable sales milestone of nearly 100 billion in 2017.

SNT is proud to hold the esteemed TS special equipment manufacturing certificate and ISO 9001 certification. With net qualification certificates from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM, we demonstrate our technical prowess through numerous national patents. Our expertise extends to designing and manufacturing an array of valves, adhering to ANSI, API, DIN, BS, JIS standards. By blending the strengths of globally renowned valves with our proprietary innovations, we deliver an extensive lineup 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 product range extends to V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves, among others. Operating options include manual, power-driven, pneumatic, and hydraulic drives. Constructed from superior materials like A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, our valves accommodate specifications from 1/2" to 120", withstanding working pressures from ANSI 150# to 2500# and operating temperatures ranging from -196ºC to 1100ºC.

Leveraging cutting-edge production technology management and robust quality assurance systems, SNT Valves are a trusted choice across sectors such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our distinguished clientele includes major industry players like SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, alongside SINOPEC Changling and Jinan branches, among others.

We prioritize our users' profits, dedicating ourselves to the creation of superior quality and a reputable brand. Our exemplary quality assurance and comprehensive after-sales systems ensure that SNT valves harmonize seamlessly with our global partners, fostering shared success and prosperity.