Innovative Self-Operated Pressure Regulator with Zg0cr18ni9ti Body Materials

• 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 in gas or low viscosity liquid applications, the AOC-3111 Self-Operated Pressure Regulating Valve by SNT Machinery (Qingdao) Co., Ltd. is designed to be mounted upright on a horizontal pipeline. However, should space constraints exist, it offers the versatility to be installed upside down or at an angle. In scenarios where the medium is verified to be clean, you may omit part 3, further enhancing installation efficiency.

 

In applications involving steam or high viscosity liquid media, the AOC-3111 Self-Operated Pressure Regulating Valve from SNT Machinery (Qingdao) Co., Ltd. is expertly engineered for installation in an upside-down position on a horizontal pipeline. This strategic positioning ensures superior performance and reliability in demanding environments.

 

Product Description

_{Introducing the revolutionary AOC-3000 Self-Operated Pressure Regulating Valve, a cutting-edge executive solution by SNT Machinery (Qingdao) Co., Ltd. This avant-garde product sets itself apart by operating without the need for external power, ingeniously utilizing the energy of the regulated medium itself for automatic adjustments. A hallmark of the AOC-3000 is its exceptional versatility, being perfectly suited for environments devoid of electricity or gas while simultaneously offering notable energy savings. Its pressure setting value can be effortlessly adjusted within a specified range, providing unparalleled convenience and adaptability. The AOC-3000 is tailored to meet diverse process requirements with three distinct valve forms: AOC-3111 (single-seated), AOC-3113 (sleeve), and AOC-3114 (double-seated), empowering users to select the optimal configuration based on working conditions such as differential pressure, temperature, medium state, and leakage requirements. Enhance your operations with our three actuator types designed for various process scenarios: diaphragm (available in normal and reinforced versions), piston, and metal diaphragm (bellows). Engineered with fast-opening flow characteristics, the AOC-3000 guarantees sensitive action and precision adjustment (error ≤10%). Occupying minimal space compared to traditional heavy hammer-type pressure reducing valves, it presents an easy adjustment process, making it an ideal choice across multiple industries including petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, civil construction, and more. Ensure optimal functionality for gas, liquid, and steam pressure reduction, stabilization (both pre-valve and post-valve), and pressure relief with the AOC-3000-your unparalleled solution for state-of-the-art pressure management.}
 

Actuator Features

 

Figure 1a, showcases the mastery of controlling the post-control valve pressure regulator, operating with a pressure-closed mechanism. The sophisticated action principle unfolds as follows: the medium gracefully enters the valve body, guided by the arrow's direction, and elegantly exits through the valve seat and spool after undergoing precise throttling. Additionally, the pressure tube (utilized with steam and condenser mediums) channels the medium into the actuator to interact with the diaphragm. This interaction prompts the spool to respond with precise displacement, embodying the essence of pressure reduction and stabilization. Should the pressure beyond the valve surge, the increased force on the diaphragm artfully compresses the spring, orchestrating the spool to decrease the valve's opening, ensuring the pressure aligns with the predetermined set value. Conversely, if the pressure diminishes, the diaphragm's force wanes, allowing the spring's reactive force to elegantly guide the spool in expanding the valve's opening, thus restoring the pressure to its optimal set value.

 

Figure 1b illustrates the regulator's prowess in managing the pressure preceding the valve, with a pressure open configuration. The elegantly designed action principle is as follows: the medium enters the valve body from the arrow-indicated direction and is meticulously outputted via the valve seat and spool following precise throttling. Furthermore, the pressure tube (with steam and condenser mediums) introduces the medium into the actuator, interacting with the diaphragm. This prompts the spool to undergo specific displacement, achieving the dual purposes of pressure relief and stabilization. In scenarios where the pressure before the valve escalates, the diaphragm's force intensifies, compressing the spring, thereby guiding the spool to enhance the valve's opening until the pressure retreats to the set value. Similarly, if the pressure wanes, the diaphragm's force decreases, and the spring's reaction gently compels the spool to diminish the valve's opening, ensuring the pressure returns to the designated set value. Notably, if the pressure before the valve is less than the set value, the valve remains steadfastly closed, embodying reliability and precision.
 

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. Founded on a high starting point for rapid development, SNT is strategically located in Qingdao, Shandong province, spanning a vast 42,000 m² area, complete with modern workshops and cutting-edge production equipment. As a high-tech enterprise, SNT boasts independent intellectual property rights and benefits from imported advanced management and production expertise. With a dedicated team of over 150 employees, where R&D specialists constitute 15% and graduates or higher degree holders represent 30%, SNT is equipped with a top-quality production management team and a pioneering technology research and development division. This enables us to produce vast quantities of superior quality valves extensively utilized in the petrochemical, oil, and coal chemical industries, achieving a sales value nearing 100 billion in the year 2017.

Presently, SNT has earned the esteemed TS special equipment manufacturing certificate and ISO 9001 certification, and has also acquired the network qualification certificate from renowned entities such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. We proudly hold numerous National Patents in various technologies. Our capabilities include designing and manufacturing a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By merging the outstanding features of world-renowned valves with independent R&D, we have evolved to produce a variety 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, and more.
Our diverse valve portfolio also 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. Our versatile driving forms range from manual operation and power-driven to pneumatic and hydraulic drive systems. The primary materials used in our components include A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, etc. Our specifications range from 1/2" to 120" in size, with working pressures of ANSI 150# to 2500#, and can withstand working temperatures from -196ºC up to 1100ºC.

Leveraging advanced production technology management and a robust quality assurance system, SNT Valves have found extensive applications across petrochemical, oil, steel & iron, paper manufacturing, and power station industries. Our esteemed clientele includes SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, and many more, all of whom rely on our products for their rigorous demands.

At SNT, we prioritize our users' profits above all, dedicating ourselves to fostering exceptional quality and a strong brand reputation. Our impeccable quality assurance and after-sales systems ensure that SNT valves collaborate harmoniously with all our customers, paving the way towards mutual prosperity and success.