Reliable Self-Operated Pressure Regulator Featuring Zg0cr18ni9ti Body Materials

• Customization: Available
• Temperature: Ordinary Temperature
• Certification: GS, RoHS, CE, ISO9001
• Model NO.: AOC-3111B
• Media: Gas, Oil, Water, Acid
• 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 type self-operated pressure regulating valve from SNT Machinery (Qingdao) Co., Ltd., is ideally installed in an upright position on a horizontal pipeline. When spatial constraints are a factor, innovative installation options such as upside down or diagonal configurations are available. Please note, when your medium is confirmed to be clean, the installation of part 3 is optional, offering you flexibility and convenience.

 

In applications involving steam or high viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve is efficiently installed upside down on a horizontal pipe. This configuration ensures optimal performance and efficiency, reflecting SNT Machinery's commitment to quality and reliability in demanding environments.

 

Product Description

_{Introducing the AOC-3000, a cutting-edge self-operated pressure regulating valve crafted to perfection by SNT Machinery (Qingdao) Co., Ltd. This innovative valve champions energy efficiency by harnessing the inherent energy of the regulated medium, thus eliminating the need for external power sources like electricity or gas. Marvel at its versatility as the pressure setting value can be seamlessly adjusted within a designated range to suit your precise requirements. The AOC-3000 series is tailored to meet the diverse demands of various industrial processes, available in three distinct valve forms: the AOC-3111 single-seated valve for straightforward applications, the AOC-3113 sleeve valve for enhanced performance, and the AOC-3114 double-seated valve for intricate processes. This adaptability allows users to effortlessly select based on specific working conditions, such as differential pressure, temperature, medium state, and leakage considerations. Furthermore, the AOC-3000 series boasts three actuator types, optimizing its adaptability for numerous process scenarios: the standard and reinforced diaphragm actuators, the robust piston actuator, and the durable metal diaphragm (bellows) actuator. Engineered with precision, the AOC-3000 features fast-opening flow characteristics, ensuring sensitive operation and exceptional adjustment accuracy, with an error margin of less than or equal to 10%. Its compact design outshines the cumbersome heavy hammer type pressure reducing valves, allowing for easy installation and adjustment. This makes it an ideal choice across a myriad of industries, including petroleum, chemicals, electric power, metallurgy, food processing, light textiles, machinery manufacturing, and civil construction. Whether you require gas, liquid, or steam pressure reduction, pressure stabilization for post-valve adjustments, or pressure relief and stabilization for pre-valve adjustments, the AOC-3000 stands as the paragon of reliability and efficiency.}
 

Actuator Features

 

Figure 1a illustrates the operation of a sophisticated post-control valve pressure regulator, which is engineered for pressure-closed applications. In essence, the medium enters the valve body as indicated by the arrow, progressing through the valve seat and spool, effectively throttling as it proceeds. Concurrently, when dealing with steam mediums combined with a condenser, an additional flow path through the pressure tube is channeled into the actuator, exerting force on the diaphragm. This dynamic interaction causes the spool to adjust its position accordingly, thereby achieving seamless pressure reduction and stabilization. As the downstream pressure rises, the diaphragm experiences increased force, compressing the spring and propelling the spool to minimize valve opening, thus maintaining pressure within desired thresholds. Conversely, should downstream pressure fall, the diminished force on the diaphragm allows the spring's counteraction to prevail, thereby driving the spool to widen the valve opening until equilibrium is restored at the designated pressure setting.

 

Figure 1b presents a masterfully designed regulator tailored for managing pressure upstream of the valve, operating under a pressure-open configuration. Here, the medium enters the valve body, navigates the valve seat and spool, and undergoes effective throttling, all as demarcated by the directional arrow. When incorporating steam mediums with a condenser, an alternative pathway via the pressure tube directs the medium to the actuator, impacting the diaphragm. This interaction prompts the spool's responsive adjustment, promoting optimal pressure relief and stabilization. Should upstream pressure rise, increased force on the diaphragm compresses the spring, urging the spool to enhance valve opening until upstream pressure aligns with the set target. Likewise, a decrease in upstream pressure reduces diaphragm pressure, allowing the spring's reactive force to prompt spool closure, adjusting the valve opening to elevate upstream pressure back to the preset level. If upstream pressure falls below the set threshold, the valve remains securely closed until equilibrium is attained.
 

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 as a paragon of excellence in the production of control valves. Seamlessly merging manufacturing, design, sales, and service, this company emerges as a beacon of innovation and rapid advancement. Situated in the vibrant city of Qingdao, Shandong province, SNT covers a sprawling 42,000 square meters, housing state-of-the-art production facilities and cutting-edge machinery. As a recognized high-tech enterprise, SNT boasts proprietary intellectual property rights and draws on a wealth of advanced management and production expertise from abroad. With a dedicated team exceeding 150 individuals, 15% of whom are R&D specialists, and 30% holding graduate-level or higher degrees, SNT's commitment to quality is unwavering. This formidable production management team, paired with pioneering technology R&D, enables the production of superior valves for the petrochemical, oil, and coal chemical industries, achieving sales nearing 100 billion yuan in 2017.

SNT has achieved prestigious certifications, including the TS Special Equipment Manufacturing Certificate and ISO 9001, alongside obtaining net qualification certificates from SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. The company is also proud of its numerous national patents in various technologies. With the capability to design and produce a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards, SNT blends global valve advancements with its proprietary R&D prowess. This expertise enables the creation of an extensive array of valves: GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, T Three-eccentric Center Butterfly Valves, and more.
Our diverse valve offerings include V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogenic Valves, and more. Versatile driving forms encompass manual operation, power-driven, pneumatic, and hydraulic drives. The main components are crafted from premium materials such as A216 WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M, with specifications ranging from 1/2" to 120". These valves are engineered to withstand working pressures of ANSI 150# to 2500# and temperatures from -196ºC to 1100ºC.

Leveraging unparalleled production technology management and a robust quality assurance system, SNT Valves have found widespread application across industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Esteemed clients include SINOPEC's Qilu and Qingdao branches, CNOOC's Huizhou Refinery, PETROCHINA's Guangxi and Ningxia branches, and many more, endorsing SNT's industry-preferred solutions.

At SNT, customer profitability takes center stage as we commit to delivering outstanding quality and cultivating a strong brand reputation. Our flawless quality assurance and comprehensive after-sales systems ensure that SNT valves forge enduring partnerships with our clientele, together driving mutual success and prosperity.