Reliable Self-Operated Pressure Regulator with A216 Wcb Valve Body

• 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 optimal performance when working with gas or low-viscosity liquid media, the AOC-3111 self-operated pressure regulating valve from our Reliable series should ideally be mounted upright on a horizontal pipe. If space constraints demand, it can be alternatively installed upside down or at an angle. Note: In instances where the medium is verified as clean, part 3 installation may be deemed unnecessary.

 

In applications involving steam or high-viscosity liquid media, it is recommended to mount the AOC-3111 self-operated pressure regulating valve upside down on a horizontal pipe. This installation method enhances the operational efficiency and reliability of the valve in such demanding environments.

 

Product Description

_{Introducing the AOC-3000 Self-Operated Pressure Regulating Valve: A pinnacle of innovation, this executive product is designed to operate autonomously without any external energy, utilizing the inherent energy of the regulated medium itself. A defining feature of this state-of-the-art regulator is its capability to function efficiently in environments devoid of electricity or gas, ensuring significant energy savings. The pressure setting is remarkably versatile, allowing for arbitrary adjustments within a specified range to suit diverse application needs. The AOC-3000 is offered in three distinct valve configurations tailored to accommodate various process demands: the AOC-3111 (single-seated), AOC-3113 (sleeve), and AOC-3114 (double-seated) self-acting pressure regulating valves. Users can select their preferred model based on specific operational conditions such as differential pressure, temperature, medium state, and leakage criteria. Further enhancing adaptability, the AOC-3000 features three actuator types: a diaphragm (available in both normal and reinforced versions), a piston, and a metal diaphragm (bellows), each crafted to meet the unique requirements of diverse process environments. Boasting fast-opening flow characteristics, this regulator offers exceptional sensitivity and precision with an adjustment accuracy error of no more than 10%. Its compact design provides a significant advantage over bulkier alternatives like the heavy hammer type pressure reducing valve, facilitating ease of adjustment and installation. Widely acclaimed across industries, the AOC-3000 is an indispensable tool in sectors such as petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, and civil construction. It excels in the regulation of gas, liquid, and steam, offering reliable pressure reduction, stabilization post-valve, pressure relief, and pre-valve stabilization, making it a versatile solution for all your pressure management needs.}
 

Actuator Features

 

Figure 1a illustrates the innovative mechanism used to control the post-control valve pressure regulator, utilizing a pressure-closed operation mode. The process unfolds as follows: the medium elegantly flows into the valve body following the directional arrow and is precisely throttled by the valve seat and spool, resulting in a smooth output. Simultaneously, the medium, if steam, enriched with a condenser, courses through the pressure tube into the actuator, engaging the diaphragm to induce a corresponding spool displacement. This sophisticated interaction achieves the dual goals of reducing pressure and maintaining stability. Should the pressure beyond the valve rise, the diaphragm's force intensifies, compressing the spring and guiding the spool to carefully reduce the valve opening until the pressure gracefully descends to the pre-set value. Conversely, if the pressure diminishes, the diaphragm's force weakens, allowing the spring's reaction force to elegantly propel the spool, increasing the valve's opening until the pressure ascends to the desired set value.

 

Figure 1b showcases the regulator designed to masterfully control the pressure ahead of the valve, operating with a pressure-open mode. The process unfolds as follows: the medium gracefully enters the valve body from the arrow-marked direction and is skillfully throttled by the valve seat and spool for a seamless output. Concurrently, if the medium is steam, enhanced with a condenser, it travels through the pressure tube to the actuator, engaging the diaphragm to induce a precise spool displacement. This intricate process ensures pressure relief and stabilization are achieved. Should the pressure ahead of the valve rise, the diaphragm's force intensifies, compressing the spring and skillfully guiding the spool to enhance the valve opening until the pressure reduces to the set value. In contrast, if the pressure declines, the diaphragm's force weakens, and the spring's reactive force artfully drives the spool to reduce the valve opening until the pressure rises to the desired set value. In instances where the pressure ahead of the valve falls below the set threshold, the valve remains elegantly 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 as a beacon of excellence in the realm of control valve production, seamlessly integrating manufacturing, design, sales, and service into a comprehensive package. Our journey began with ambitious aspirations and rapid growth, and today, SNT thrives in Qingdao, Shandong province, sprawling over an expansive 42,000m2 facility. Here, state-of-the-art workshops and cutting-edge production equipment underscore our commitment to innovation. As a high-tech enterprise, we boast independent intellectual property rights and leverage global management and production expertise. Our dynamic team of over 150 employees includes a robust R&D division, with 15% of our workforce dedicated to research and development, and an impressive 30% holding graduate or advanced degrees. Our pioneering spirit and steadfast dedication to quality have positioned us as a leader in manufacturing high-caliber valves, serving industries such as petrochemical, oil, and coal chemistry. In 2017 alone, our sales soared to nearly 100 billion.

SNT is proud to have secured the TS Special Equipment Manufacturing Certificate and ISO 9001, alongside the net qualification certificates from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovative edge is further bolstered by numerous national patents in diverse technologies. We design and manufacture a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. Our unique blend of global valve excellence and independent research empowers us to produce an array of top-tier valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves, all finely crafted to meet the highest standards.
Our extensive valve lineup encompasses 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. We offer diverse driving forms such as manual operation, power-driven, pneumatic, and hydraulic drives. The materials we employ, like A216 WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, exemplify our commitment to quality. Our specifications range from 1/2" to 120", with a working pressure of ANSI 150#~2500#, and operating temperatures between -196ºC and 1100ºC, ensuring versatile solutions for varied industrial needs.

SNT Valves, powered by advanced production technology and an unwavering quality assurance system, have found their niche in industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Esteemed clients like SINOPEC QILU Branch, SINOPEC Qingdao Branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi Branch, PETROCHINA Ningxia Branch, and SINOPEC Changling Branch, among others, trust us to deliver excellence. Our strategic partnerships, including with the Jinan branch, underscore our dedication to meeting the industry's highest standards.

At SNT, we prioritize our users' profitability, dedicating ourselves to crafting exceptional quality and building a reputable brand. Our meticulous quality assurance and robust after-sales systems ensure that SNT valves transcend expectations, fostering enduring partnerships with our valued clients and paving the way to shared success and prosperity.