Efficient Self-Operated Pressure Regulator with A216 Wcb Valve Body

• 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 marvel of engineering by SNT Machinery (Qingdao) Co., Ltd. This innovative device is designed to function independently, requiring no external energy source, as it harnesses the energy of the regulated medium itself. This makes it ideal for locations lacking electricity or gas, providing an energy-efficient solution. With the flexibility to adjust pressure settings within a specified range, it is adaptable to various needs. Choose from three valve formats tailored for distinct process requirements: - AOC-3111: Single-Seated Self-Acting Valve - AOC-3113: Sleeve Self-Acting Valve - AOC-3114: Double-Seated Self-Acting Valve Select based on working conditions such as differential pressure, temperature, medium state, and leakage demands. Additionally, three actuator types are available to cater to diverse process scenarios: - Diaphragm (Standard and Reinforced) - Piston - Metal Diaphragm (Bellows) The AOC-3000 stands out with its fast-opening flow characteristics, ensuring responsive operation and precise adjustments (error margin ≤10%). Its compact design allows for easy installation, making it a preferred choice across industries such as petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, and civil construction. It's perfect for applications involving gas, liquid, and steam to: - Reduce and stabilize pressure (post-valve adjustment) - Relieve and stabilize pressure (pre-valve adjustment).}
 

Actuator Features

 

Figure 1a, showcases a sophisticated mechanism designed to expertly manage the pressure regulation of the post-control valve with a pressure-closed operation mode. Its working principle is elegantly simple: the medium gracefully enters the valve body following the arrow's guidance and is then skillfully released by the valve seat and spool after precise throttling. Simultaneously, through the pressure tube, which includes the condenser when the medium is steam, the medium is channeled into the actuator to influence the diaphragm. This interaction prompts the spool to shift accordingly, achieving the dual goals of pressure reduction and stabilization. Should the post-valve pressure rise, the diaphragm's force intensifies, compressing the spring and adjusting the spool to minimize the valve's opening until the pressure aligns with the desired setting. Conversely, when the post-valve pressure diminishes, the diaphragm's force wanes, allowing the spring's reaction to expand the valve's opening until optimal pressure is restored.

 

Figure 1b, presents an adept pressure regulator for pre-valve pressure management, featuring a pressure-open operation mode. The medium gracefully enters the valve body as directed by the arrow and is deftly released through the valve seat and spool after expert throttling. Moreover, the pressure tube, accompanied by the condenser when the medium is steam, channels the medium into the actuator, influencing the diaphragm and prompting precise spool displacement for pressure relief and stabilization. If pre-valve pressure heightens, the diaphragm's force magnifies, compressing the spring and expanding the valve's opening until pressure subsides to the set value. Conversely, a reduction in pre-valve pressure decreases the diaphragm's force, allowing the spring's reaction to narrow the valve's opening until pressure is optimally restored. Should the pre-valve pressure fall below the set threshold, the valve remains closed, ensuring consistent performance.
 

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 gas or low viscosity liquid media applications, the AOC-3111 type self-operated pressure regulating valve from SNT Machinery (Qingdao) Co., Ltd. ideally finds its place in an upright position on a horizontal pipe. This optimal setup ensures seamless functionality unless spatial constraints necessitate an inverted or diagonal installation. In cases where the medium is confirmed as clean, the installation may proceed without part 3, allowing for a more streamlined setup.

 

In scenarios involving steam or high viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve by SNT Machinery (Qingdao) Co., Ltd. is conventionally installed in an inverted position on a horizontal pipe. This configuration ensures maximum efficiency and reliability for demanding conditions, leveraging the robust design of the A216 Wcb Valve Body for enhanced performance.
 

Production application

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd. stands as a premier innovator and manufacturer of control valves, seamlessly integrating design, production, sales, and service. Rooted in Qingdao, Shandong province, our expansive 42,000m2 facility is equipped with cutting-edge workshops and state-of-the-art production equipment. As a high-tech enterprise boasting independent intellectual property rights, we've embraced advanced global management and production methodologies. Our dynamic team of over 150 employees includes 15% R&D specialists and 30% graduates with higher degrees. Our commitment to high-quality production and pioneering R&D propels us to manufacture superior valves for petrochemical, oil, and coal chemical sectors. By 2017, our sales soared to nearly 100 billion, reflecting our excellence and growth.

SNT proudly holds the TS special equipment manufacturing certificate and ISO 9001, along with key net qualification certificates from SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. With numerous national patents, we expertly design and manufacture an extensive array of valves conforming to ANSI, API, DIN, BS, JIS standards. By blending the strengths of globally renowned valves with robust independent R&D, we offer a comprehensive range, such as GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves. Our T Three-eccentric Center Butterfly Valves showcase our engineering prowess.
Our vast valve selection includes V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves. We offer diverse driving modes, including manual, power-driven, pneumatic, and hydraulic operations. Crafted from top-grade materials like A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, our valves cater to specifications ranging from 1/2" to 120", with working pressures of ANSI 150# to 2500# and temperatures from -196ºC to 1100ºC, ensuring reliability and performance across demanding applications.

Backed by superior production technology management and a robust quality assurance system, SNT Valves are esteemed in petrochemical, oil, steel, iron, paper manufacturing, and power station sectors. Our prestigious clientele includes SINOPEC QILU Branch, SINOPEC Qingdao Branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi Branch, PETROCHINA Ningxia Branch, and more, underscoring our reputation and trustworthiness in delivering exceptional valve solutions.

Our unwavering dedication to optimizing user profits guides us toward building a distinguished brand synonymous with quality excellence. Our comprehensive quality assurance and after-sales support systems ensure that SNT valves, in collaboration with our clients, pave the way for shared success and prosperity.