ANSI 150-600 for Nominal Pressure for Flanged Heavy-Duty Self-Operated Pressure Regulator for Regulated Pressure Control with Carbon Steel Materials

• 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

_{The AOC-3000 self-operated pressure regulating valve is a groundbreaking innovation from SNT Machinery (Qingdao) Co., Ltd. This cutting-edge executive product operates autonomously, requiring no external energy input, as it intelligently harnesses the energy from the regulated medium itself. Its standout feature is exceptional versatility, making it ideal for scenarios lacking electricity or gas, all while promoting energy efficiency. With adjustable pressure settings within a specified range, it offers unparalleled adaptability. Tailored to diverse process needs, the AOC-3000 is available in three distinct valve configurations: AOC-3111 (single-seated), AOC-3113 (sleeve), and AOC-3114 (double-seated), allowing users to select based on specific working conditions like differential pressure, temperature, and medium state, as well as leakage criteria. Additionally, the AOC-3000 offers three innovative actuator types to meet various process demands: diaphragm (including normal and reinforced), piston, and metal diaphragm (bellows). This valve's fast-opening flow characteristics ensure highly responsive operation and precise regulation (with an error margin of ≤10%). Its compact design outshines bulkier alternatives such as the traditional heavy hammer type pressure reducing valve, offering effortless adjustability. As a result, it finds extensive application across industries such as petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, and civil construction for gas, liquid, and steam pressure reduction, stabilization, post-valve adjustment, pressure relief, and pre-valve adjustment stabilization.}
 

Actuator Features

 

Figure 1a showcases a dynamic system designed to masterfully control the post-control valve pressure regulator, operating in a pressure-closed mode. The innovative mechanism works as follows: the medium serenely flows into the valve body, adhering to the direction of the arrow, and is then elegantly channeled out by the valve seat and spool following a precise throttling process. Meanwhile, an alternate path via the pressure tube (enhanced with a condenser in the case of steam) introduces the medium into the actuator, acting decisively on the diaphragm. This orchestrates a strategic displacement of the spool, achieving the dual objectives of pressure reduction and stabilization. Should the post-valve pressure surge, the increased force on the diaphragm compresses the spring, expertly driving the spool to reduce the valve opening until desired equilibrium is restored at the predetermined pressure. Conversely, a drop in post-valve pressure results in a decreased force on the diaphragm, prompting the spring's reaction force to deftly increase the valve opening, ensuring the pressure ascends back to the set level.

 

Figure 1b illustrates the regulator engineered to exquisitely manage the pressure in front of the valve, with a pressure-open operational mode. The system's principle of action is as follows: the medium gracefully enters the valve body, guided by the arrow's direction, then seamlessly exits through the valve seat and spool after precise throttling. In a parallel route, the medium travels via the pressure tube (accompanied by a condenser in the event of steam), entering the actuator to engage the diaphragm and induce a calculated displacement of the spool. This process ensures effective pressure relief and stabilization. If the pressure ahead of the valve climbs, the diaphragm force escalates, compressing the spring, and the spool is encouraged to expand the valve opening until pressure is harmoniously reduced to the target value. In scenarios where the pressure ahead of the valve diminishes, the diaphragm force wanes, and the spring's reaction force skillfully reduces the valve opening until pressure is elevated to the desired level. Notably, if the pressure ahead of the valve falls below the established value, the valve remains resolutely 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

Mounting Method

 

For applications involving gas or low viscosity liquid media, the AOC-3111 model self-operated pressure regulating valve is typically mounted in an upright position on a horizontal pipe. This positioning is ideal unless spatial constraints necessitate an upside-down or diagonal installation. In scenarios where the medium is verified as clean, the installation of part 3 can be optionally omitted, enhancing efficiency and simplicity.

 

In applications dealing with steam or high viscosity liquid media, the AOC-3111 model self-operated pressure regulating valve is generally positioned upside down on a horizontal pipe. This orientation optimizes performance and is particularly suited to managing the unique properties of these media types.
 

Production application

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd is a distinguished provider of cutting-edge control valves, seamlessly integrating manufacturing, innovative design, comprehensive sales, and superior service into one robust entity. With a vision for high-quality inception and rapid growth, SNT is strategically situated in the vibrant city of Qingdao, within Shandong province, sprawling over a vast area of 42,000m². Our state-of-the-art workshops and production facilities epitomize modernity. As a high-tech firm, we pride ourselves on possessing independent intellectual property rights and have embraced advanced management and production methodologies from global leaders. Our dynamic team comprises over 150 skilled professionals, with 15% dedicated to rigorous R&D pursuits and 30% being graduates or holding advanced degrees. Our commitment to excellence is evident in our high-quality production management team and pioneering technological research, resulting in the prolific production of superior valves employed in the petrochemical, oil, and coal chemical sectors. Our exceptional sales performance reached a remarkable milestone of nearly 100 billion in 2017.

SNT proudly holds the prestigious TS Special Equipment Manufacturing Certificate and the globally recognized ISO 9001 certification. We have also earned the esteemed network qualification certificates from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovative prowess is further substantiated by numerous National Patents across various technological domains. Our expertise enables us to design and produce a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By leveraging the strengths of renowned valve designs worldwide and fostering independent research and development, we manufacture an extensive 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.
Our diverse valve 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, among others. These valves are available in various driving forms, including manual, power-driven, pneumatic, and hydraulic. Our main components are crafted from premium materials such as A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. We offer specifications ranging from 1/2" to 120", with working pressures from ANSI 150# to 2500#, and operational temperatures spanning from -196ºC to 1100ºC.

Our SNT Valves, renowned for their reliability and efficiency, are extensively utilized across a spectrum of industries, including petrochemical, oil, steel & iron, paper manufacturing, and power generation sectors. Our illustrious clientele features industry leaders such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Changling branch, and Jinan branch.

At SNT, we place our user's profitability at the forefront, passionately striving to build an exceptional brand synonymous with quality and reliability. Our impeccable quality assurance and comprehensive after-sales support systems ensure that SNT valves forge enduring partnerships with our esteemed clients, paving the way for mutual prosperity and success.