Innovative Self-Operated Pressure Regulator with A216 Wcb and Butt Welding

• 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 seamless integration into your gas or low viscosity liquid systems, the AOC-3111 Self-Operated Pressure Regulating Valve by SNT Machinery (Qingdao) Co., Ltd. is expertly designed for optimal performance when mounted upright on a horizontal pipe. This versatile component can also be installed upside down or diagonally, accommodating challenging spatial constraints. In instances where the medium is guaranteed clean, part 3 installation can be omitted, simplifying your setup.

 

In applications involving steam or high viscosity liquids, the robust AOC-3111 Self-Operated Pressure Regulating Valve is typically mounted upside down on a horizontal pipe. This configuration ensures efficient operation and dependable performance across challenging media types, aligning with the high standards set by SNT Machinery (Qingdao) Co., Ltd.

 

Product Description

_{Introducing the AOC-3000 Self-Operated Pressure Regulating Valve-an outstanding executive solution by SNT Machinery (Qingdao) Co., Ltd., designed for the modern era! This innovative valve requires no external energy source. It ingeniously regulates itself using the energy from the medium it administers. Its standout feature is its ability to function seamlessly in environments lacking electricity or gas, delivering remarkable energy efficiency. The pressure setting is effortlessly adjustable within a specified range. Tailored to meet diverse process requirements, the AOC-3000 is available in three distinct valve configurations: AOC-3111 (single-seated), AOC-3113 (sleeve type), and AOC-3114 (double-seated), allowing users to choose based on specific working conditions such as differential pressure, temperature, and medium state, along with desired leakage standards. For versatile application needs, the AOC-3000 offers three actuator types: diaphragm (available in both standard and reinforced versions), piston, and metal diaphragm (bellows). Engineered for excellence, this valve features fast-opening flow characteristics, ensuring rapid response and superior adjustment precision with an error margin of merely ≤10%. Its compact design, compared to bulkier hammer-type pressure reducing valves, makes it easy to install and adjust. This makes the AOC-3000 the preferred choice across multiple industries including petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, and civil construction. Whether for gas, liquid, or steam, this valve excels in pressure reduction, stabilization (both pre- and post-valve adjustment), and pressure relief, solidifying its place as an indispensable asset in modern industry.}
 

Actuator Features

 

Figure 1a showcases the sophisticated mechanism for controlling the post-control valve pressure regulator, employing a pressure-closed type action mode. The operation is elegantly simple: as the medium seamlessly flows into the valve body following the arrow's direction, it is deftly outputted through the valve seat and spool after precise throttling. Concurrently, via the pressure tube (when paired with steam, inclusive of a condenser), the medium is guided to the actuator where it influences the diaphragm. This interaction leads the spool to make a corresponding displacement, achieving the desired pressure reduction and stabilization. In scenarios where the downstream pressure surges, the diaphragm's force intensifies, compressing the spring and maneuvering the spool to narrow the valve opening until equilibrium is restored to the pre-set pressure level. Conversely, if the pressure wanes behind the valve, the diaphragm's force diminishes, and the spring's reactive force propels the spool to widen the valve opening until the pressure returns to the intended set threshold.

 

Figure 1b illustrates the strategic regulator used to modulate the pressure ahead of the valve, utilizing the pressure open type action mode. The operation process is a marvel: the medium gracefully enters the valve body from the specified arrow direction and is skillfully outputted through the valve seat and spool post-throttling. Simultaneously, the medium, through the pressure tube (accompanied by steam and condenser), is directed into the actuator impacting the diaphragm, prompting the spool to enact a corresponding displacement for achieving optimal pressure relief and stabilization. Should the pressure escalate in front of the valve, the diaphragm's exerted force increases, compressing the spring and prompting the spool to expand the valve opening until the pressure recedes to the predetermined set value. In contrast, if the pressure diminishes ahead of the valve, the diaphragm's influence fades, and the spring's counteraction drives the spool, thus reducing the valve opening until the pressure reinstates to the desired set level. In situations where the pressure ahead of the valve falls below the set value, the valve remains securely closed, ensuring precision 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 distinguished producer of control valves, seamlessly integrating manufacturing, design, sales, and service into a single, cohesive entity. Built on a foundation of high standards and rapid progress, SNT is strategically situated in Qingdao, Shandong province, sprawling across an impressive 42,000 square meters. This state-of-the-art facility houses cutting-edge workshops and production equipment, fostering a high-tech enterprise with independent intellectual property and world-class management and production expertise. Our dynamic team comprises over 150 dedicated professionals, with 15% specializing in research and development, and 30% holding graduate or advanced degrees. Harnessing the power of an elite production management team and pioneering technology, we manufacture an extensive range of top-tier valves, expertly crafted for the petrochemical, oil, and coal chemical sectors. Our sales soared to nearly 100 billion in 2017, a testament to our exceptional quality and service.

SNT has been awarded the coveted TS special equipment manufacturing certificate and ISO 9001 certification, alongside the net qualification certificate from esteemed organizations such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our technological prowess is further demonstrated by numerous national patents. We possess the expertise to design and produce a comprehensive array of valves adhering to ANSI, API, DIN, BS, JIS standards. By amalgamating the distinct advantages of world-renowned valves with our own innovative research and development, we've mastered the art of crafting all types 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 product line extends to V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogenic Valves, and more. Operational mechanisms offer versatility with manual, power-driven, pneumatic, and hydraulic options. Core materials include A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, covering specifications from 1/2" to 120", withstanding pressures from ANSI 150# to 2500#, and enduring temperatures from -196ºC to 1100ºC.

Leveraging cutting-edge production technology management and a robust quality assurance framework, SNT Valves have become indispensable across petrochemical, oil, steel & iron, paper manufacturing, and power station industries. Our esteemed clientele features industry giants such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and more, who trust in the unrivaled reliability and performance of our valves.

At SNT, we place the utmost importance on maximizing user profitability, dedicating ourselves to building an outstanding brand and unparalleled quality. Our impeccable quality assurance and comprehensive after-sales systems ensure that SNT valves forge enduring partnerships with all our customers, paving the way to mutual prosperity and success.