Efficient Self-Operated Pressure Regulator with A216 Wcb and CF3m

• 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 gas or low-viscosity liquid applications, the AOC-3111 self-operated pressure regulating valve by SNT Machinery (Qingdao) Co., Ltd. is ideally mounted upright on horizontal pipelines. Should spatial constraints arise, alternate positioning such as upside down or diagonal installation is permissible. Notably, if the medium is verified as clean, the installation of component part 3 can be omitted for a streamlined setup.

 

In scenarios involving steam or high-viscosity liquids, the AOC-3111 self-operated pressure regulating valve should be installed upside down on a horizontal pipeline. This configuration ensures optimal regulation and efficiency for such demanding conditions, catering to the specialized needs of these media.

 

Product Description

_{Introducing the AOC-3000 Self-Operated Pressure Regulating Valve from SNT Machinery (Qingdao) Co., Ltd., a marvel of engineering designed to deftly regulate pressure without relying on external energy sources. This innovative product harnesses the intrinsic energy of the regulated medium, making it the perfect solution in settings devoid of electricity or gas, while simultaneously promoting energy conservation. Tailor your pressure settings with ease, as the AOC-3000 allows for flexible adjustment within a predefined range. Offering versatility for diverse industrial needs, it comes in three distinct valve configurations: the AOC-3111 single-seated, the AOC-3113 sleeve, and the AOC-3114 double-seated self-acting pressure regulating valves, enabling users to select based on specific operational conditions such as differential pressure, temperature, medium state, and leakage requirements. Furthermore, it caters to varying process demands with three actuator types: the classic diaphragm (available in both normal and reinforced variants), the robust piston, and the metal diaphragm (bellows). Notably, the AOC-3000 boasts rapid-opening flow characteristics, ensuring swift response and exceptional control precision (with an error margin of ≤10%). Its compact design saves space, especially when compared to bulkier hammer-type pressure reducing valves, and its ease of adjustment makes it an indispensable asset across industries, including petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, and civil construction. It excels in managing gas, liquid, and steam pressure reduction, stabilizing pressure post-valve, and pressure relief along with pre-valve stabilization. Experience unparalleled efficiency and reliability with the AOC-3000 Self-Operated Pressure Regulator, where innovation meets functionality.}
 

Actuator Features

 

Figure 1a: Masterfully engineered to fine-tune the post-control valve pressure regulation, this valve operates in a pressure-closed mode. The dynamic operational principle unfolds as follows: The medium elegantly flows into the valve body following the directional arrow, then gracefully exits through the valve seat and spool after precise throttling. In an alternative pathway, the pressure tube (for steam mediums with condensers) channels the medium into the actuator, exerting force on the diaphragm; this causes the spool to adjust its position, achieving seamless pressure reduction and stabilization. Should the valve's downstream pressure rise, the increased force on the diaphragm compresses the spring, guiding the spool to reduce the valve's opening until equilibrium is restored at the set pressure. Conversely, if downstream pressure falls, the diminished diaphragm force and spring's counteraction urge the spool to widen the valve opening until pressure stabilizes to the predefined level.

 

Figure 1b: This regulator is adept at managing pre-valve pressure, operating in a pressure-open mode. With a sophisticated mechanism, the medium charts its course into the valve body from the arrow-marked direction, and is elegantly expelled through the valve seat and spool post-throttling. An alternative route via the pressure tube (for steam mediums with condensers) introduces the medium to the actuator, engaging the diaphragm to orchestrate the spool's displacement, thereby ensuring efficient pressure relief and stabilization. If pre-valve pressure surges, the increased diaphragm force compresses the spring, prompting the spool to expand the valve opening until the pressure descends to the set threshold. Conversely, a dip in pre-valve pressure reduces diaphragm force, and the spring's reactive push compels the spool to constrict the valve opening, restoring pressure to the intended set level. Notably, when pre-valve pressure falls beneath the defined threshold, 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

 

Production application

 

 

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd stands at the forefront of innovation as a leading producer of control valves, expertly combining manufacturing, designing, sales, and services under one roof. Positioned in the bustling city of Qingdao, Shandong province, our expansive facility spans 42,000 square meters and boasts state-of-the-art workshops and production equipment. As a pioneering high-tech enterprise, we pride ourselves on holding independent intellectual property rights, complemented by advanced imported management and production techniques. Our dedicated workforce exceeds 150 employees, with 15% being R&D specialists and 30% holding graduate or higher degrees. Leveraging a top-tier production management team and cutting-edge research and development, SNT Machinery has surged in producing vast quantities of superior quality valves for the petrochemical, oil, and coal chemical industries. Impressively, our sales reached a remarkable value of nearly 100 billion in 2017.

Presently, SNT has proudly secured the TS special equipment manufacturing certificate and ISO 9001 certification. Our net qualification from renowned giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM is a testament to our technological prowess. We have also garnered numerous National Patents across various technologies. SNT is adept at designing and manufacturing a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By harnessing the strengths of globally famous valve designs and pioneering in-house research, we now produce an extensive variety 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.
Our expansive valve selection further includes 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. Varied driving forms encompass manual, power-driven, pneumatic, and hydraulic systems. Our main parts are crafted from top-grade materials such as A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. Our specifications range from 1/2" to 120", with working pressures spanning ANSI 150# to 2500#, and temperatures stretching from -196ºC to an impressive 1100ºC.

Thanks to our cutting-edge production technology management and rigorous quality assurance system, SNT Valves are extensively utilized across industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our prestigious clientele includes SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, among others, including SINOPEC Changling branch and Jinan branch.

At SNT, we prioritize our users' profits, dedicating ourselves to establishing unmatched quality and a distinguished brand. Our impeccable quality assurance and after-sales systems ensure that SNT valves form lasting partnerships with our customers, fostering shared success and prosperity.