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

• 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 when using the valve in gas or low viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve should be gracefully mounted upright on a horizontal pipeline. However, should space constraints arise, alternative installations such as upside down or diagonally are permissible. Notably, in instances where the medium is verified as pristine, the inclusion of part 3 becomes optional, allowing for streamlined operation.

 

In applications involving steam or high viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve is typically installed in an upside-down orientation on a horizontal pipe, ensuring the effective and efficient regulation of pressure within the system.

 

Product Description

_{Introducing the AOC-3000 Self-Operated Pressure Regulating Valve - a groundbreaking solution by SNT Machinery (Qingdao) Co., Ltd. This innovative valve redefines efficiency by autonomously regulating pressure without needing any external power source. Harnessing the inherent energy of the regulated medium, it offers unmatched energy savings. Perfect for environments lacking electricity or gas, its adaptable pressure settings provide unparalleled flexibility. The sophisticated AOC-3000 series is engineered in three distinct forms to suit diverse industrial processes: AOC-3111 - the single-seated self-acting valve; AOC-3113 - the sleeve self-acting valve; and AOC-3114 - the double-seated self-acting valve. Each model is meticulously designed for specific operational parameters like differential pressure, temperature, and medium state, while also accommodating unique leakage requirements. Furthermore, the AOC-3000 series features three actuator types to meet varied process demands: the versatile diaphragm (offered in both standard and reinforced options), the robust piston, and the durable metal diaphragm (bellows). These valves boast fast-opening flow characteristics, ensuring swift response and precise regulation with a minimal error margin of ≤10%. Their compact design saves space compared to traditional heavy hammer-type pressure reducing valves, and they are effortlessly adjustable. With widespread applicability, the AOC-3000 valves excel in a multitude of industries including petroleum, chemical, electric power, metallurgy, food processing, light textile, machinery manufacturing, and civil construction. They are adept at handling gas, liquid, and steam pressure reduction, stabilization (both post-valve and pre-valve adjustments), and relief, offering a comprehensive solution for modern industrial needs.}
 

Actuator Features

 

Figure 1a: Behold the remarkable innovation of the pressure regulator that governs the post-control valve, artfully designed as a pressure-closed type. Discover the ingenious mechanism where the medium gracefully flows into the valve body following the arrow's guidance. It emerges, refined and controlled, through the valve seat and spool after experiencing precise throttling. Intriguingly, another path allows the medium to travel through the pressure tube-especially when steam and a condenser are involved-into the actuator to influence the diaphragm. This delicate balance orchestrates the spool's movement, achieving the dual goals of pressure reduction and stabilization. Should the pressure after the valve surge, the diaphragm's force swells, compressing the spring and maneuvering the spool to diminish the valve's aperture until equilibrium is restored. Conversely, if the pressure wanes, the diaphragm's force diminishes, prompting the resilient spring's reaction to drive the spool, thereby expanding the valve's opening until the desired pressure is reinstated.

 

Figure 1b: Introducing a sophisticated regulator, exquisitely crafted to command the pressure preceding the valve, showcasing its pressure-open design. Witness the captivating process as the medium enters the valve body, following the directional arrow, emerging elegantly through the valve seat and spool after finely tuned throttling. Another route allows passage through the pressure tube-when steam amalgamates with a condenser-into the actuator, engaging the diaphragm. This interaction incites a controlled spool displacement, orchestrating pressure relief and stabilization. Should the pressure in front of the valve intensify, the diaphragm's force amplifies, compressing the spring and urging the spool to widen the valve's opening until balance is achieved. Conversely, a pressure decline eases the diaphragm's force, prompting the spring's reactive prowess to guide the spool, reducing the valve's opening until equilibrium is restored. Notably, if the pressure remains below the set threshold, the valve remains closed, steadfast in its assurance of safety and reliability.
 

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 prestigious and pioneering producer of control valves. We seamlessly integrate manufacturing, design, sales, and service under one roof. With a foundation of swift development, SNT is strategically located in the vibrant city of Qingdao, Shandong province, sprawling across a vast area of 42,000m². Our state-of-the-art modern workshops and advanced production equipment mark us as a high-tech enterprise with a robust portfolio of independent intellectual property rights. We embrace global managerial excellence and production methodologies. Our powerhouse team consists of over 150 dedicated professionals, with 15% being specialized R&D experts, and 30% boasting graduate and higher degrees. Our commitment to excellence is reflected in our high-quality production management and innovative technology, enabling us to manufacture premium valves extensively utilized in petrochemical, oil, and coal chemical industries. In 2017, we proudly achieved a sales milestone nearing 100 billion.

SNT proudly holds the prestigious TS Special Equipment Manufacturing Certificate and ISO 9001 certification. We are also accredited with the network qualification certificate from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our pioneering spirit is further highlighted by multiple National Patents across various technologies. We possess the capability to design and manufacture a comprehensive range of valves, adhering to esteemed standards such as ANSI, API, DIN, BS, and JIS. By amalgamating the benefits of world-renowned valves with our proprietary R&D, we specialize in producing a diverse array of valves including GLOBE, High-Pressure Boiler Blow-down, High-performance Butterfly, Angle-regulating, and Eccentric Rotary Valves.
Our extensive portfolio also features T Three-eccentric Center Butterfly Valves, V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves. Our driving options span manual, power-driven, pneumatic, and hydraulic modes. We utilize high-grade materials for core components such as A216 WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M. Our specifications range from 1/2" to 120", with working pressures from ANSI 150# to 2500#, accommodating temperatures as extreme as -196ºC to 1100ºC.

Leveraging cutting-edge production technology and a rigorous quality assurance system, SNT Valves excel across various industries including petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele features leading industry names such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, and PETROCHINA Ningxia branch, among others.

At SNT, our customers' success is our highest priority. We are dedicated to crafting superior quality products and building a reputable brand. Our impeccable quality assurance and after-sales systems ensure that SNT valves consistently deliver excellence, fostering prosperous partnerships with all our clients.