Flanged Precision Engineered Self-Operated Pressure Regulator for Valve Systems 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

_{Discover the impeccable engineering of the AOC-3000 self-operated pressure regulating valve, a groundbreaking executive product that operates independently without relying on any external energy sources. Utilizing the intrinsic energy of the regulated medium, this valve offers automatic regulation and stands as a beacon of efficiency, especially in scenarios devoid of electricity or gas, promoting significant energy conservation. The brilliance of this product lies in its adaptable pressure setting, which can be adjusted freely within a designated range. The AOC-3000 shines with versatility, offering three distinct valve configurations to align perfectly with varied process requirements: AOC-3111 (single-seated), AOC-3113 (sleeve), and AOC-3114 (double-seated) self-acting pressure regulating valves. This allows users to make informed choices based on specific working conditions such as differential pressure, temperature, medium state, and leakage prerequisites. Furthermore, the AOC-3000 provides three unique actuator types to cater to diverse process exigencies: diaphragm (available in both standard and reinforced forms), piston, and metal diaphragm (bellows). Embrace the AOC-3000's fast-opening flow characteristics, which deliver exceptional sensitivity and precision with an adjustment accuracy error of merely ≤10%. Its compact design ensures minimal spatial footprint compared to the traditional heavy hammer pressure reducing valves and promises ease of adjustment. This makes it a preferred choice across a multitude of industries, including petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, and civil construction. It excels in applications involving pressure reduction, stabilization (both post-valve and pre-valve adjustments), and pressure relief for gases, liquids, and steam.}
 

Actuator Features

 

Figure 1a: Unveiling the marvel of precision regulation, this system is designed to masterfully control post-control valve pressure. With a pressure-closed action mode, it uses an intricate mechanism where the medium flows into the valve body guided by the directional arrow, navigating through the valve seat and spool via throttling. The sophisticated pressure tube (enhanced with a condenser for steam mediums) channels the medium into the actuator, engaging the diaphragm and prompting precise spool displacement. This orchestrated movement beautifully achieves pressure reduction and stabilization. Should the pressure rise post-valve, the diaphragm feels an intensified force, compressing the spring and guiding the spool to diminish the valve opening, restoring the pressure to the desired setting. Conversely, with a pressure drop, the diaphragm's force wanes, allowing the spring's reaction to elegantly expand the valve opening, thereby recalibrating the pressure to its pre-set level.

 

Figure 1b: Witness the brilliance of a regulator engineered for optimal pressure control ahead of the valve, featuring a pressure-open action mode. Envision the medium's journey as it enters the valve body, driven by the arrow's direction, then artfully traverses the valve seat and spool post-throttling. The pressure tube, adeptly handling steam mediums with a condenser, steers the medium into the diaphragm within the actuator. Here, the orchestrated displacement of the spool delivers exemplary pressure relief and consistent stabilization. An increase in pre-valve pressure amplifies the diaphragm's force, compressing the spring and prompting the spool to widen the valve opening, seamlessly realigning the pressure to its set benchmark. Conversely, a decrease results in diminished diaphragm force, allowing the spring's responsive recoil to subtly reduce the valve opening, ensuring the pressure gracefully ascends to its predetermined setting. Persistently low pre-valve pressure keeps the valve in a closed state.
 

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 the optimal performance and longevity of your valve system, especially when dealing with gas or low viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve should be ideally mounted upright on a horizontal pipe. However, if spatial constraints exist, consider an upside-down or diagonal installation, ensuring the medium is clean to potentially omit part 3, simplifying maintenance and enhancing efficiency.

 

In applications involving steam or high viscosity liquid media, achieving optimal functionality requires the AOC-3111 type self-operated pressure regulating valve to be strategically installed upside down on a horizontal pipe. This configuration is essential for handling the demands of such media, ensuring reliable operation and sustained pressure regulation.
 

Production application

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd stands as a distinguished leader in the production of control valves, seamlessly integrating manufacturing, designing, sales, and services. Embarking on a high-caliber journey with rapid development, SNT finds its home in Qingdao, Shandong province, sprawling over an impressive 42,000m². Here, our modern workshops and cutting-edge production equipment foster innovation. As a high-tech enterprise, we boast independent intellectual property rights and have adopted advanced management and production practices from around the globe. Our dynamic team exceeds 150 employees, with 15% dedicated to R&D and 30% possessing graduate or higher degrees. Harnessing a high-quality production management team alongside groundbreaking research and development, we deliver superior valves extensively applied in petrochemical, oil, and coal chemical industries, achieving a remarkable sales value nearing 100 billion in 2017.

SNT proudly holds the TS Special Equipment Manufacturing Certificate and ISO 9001 certification, alongside the network qualification certificates from industry giants SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. We have attained numerous National Patents for our technological innovations. Our comprehensive design and manufacturing capabilities cover all valve series, adhering to ANSI, API, DIN, BS, and JIS standards. By blending the strengths of world-renowned valves with our own pioneering research and development, we manufacture a vast array of valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, T Three-eccentric Center Butterfly Valves.
Our expertise 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. Our versatile driving options encompass manual operation, power-driven, pneumatic, and hydraulic systems. The core materials in our valves include A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, ensuring reliability and durability. Specifications range from 1/2" to 120", with working pressures from ANSI 150# to 2500#, and operational temperatures from -196ºC to 1100ºC.

Leveraging state-of-the-art production technology and a robust quality assurance system, SNT valves are extensively utilized across the petrochemical, oil, steel and iron, paper manufacturing, and power station industries. Esteemed clients such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and more, trust our products for their pivotal operations.

Prioritizing our customers' success, we are committed to establishing a brand synonymous with excellence and quality. Our impeccable quality assurance and after-sales systems ensure that SNT valves collaborate effectively with our clientele, paving the way for mutual prosperity.