Pneumatic Heavy-Duty Self-Operated Pressure Regulator with CF8 Body Materials with ANSI 150-600 for Nominal Pressure

• 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 innovative AOC-3000, a premier self-operated pressure regulating valve expertly crafted by SNT Machinery (Qingdao) Co., Ltd. This cutting-edge product boasts autonomous efficiency, powered by the intrinsic energy of the regulated medium, eliminating the need for any external power sources. Perfectly designed for locations devoid of electricity or gas, this regulator not only saves energy but also offers unparalleled versatility with adjustable pressure settings within a specified range. Tailored to meet diverse process demands, the AOC-3000 comes in three distinct valve forms: - AOC-3111: Single-seated self-acting pressure regulating valve - AOC-3113: Sleeve self-acting pressure regulating valve - AOC-3114: Double-seated self-acting pressure regulating valve Select the ideal option based on your specific requirements, including differential pressure, temperature, medium state, and leakage considerations. Moreover, the AOC-3000 offers three actuator types to suit various operational needs: - Diaphragm (normal and reinforced) - Piston - Metal diaphragm (bellows) This model features fast-opening flow characteristics, ensuring responsiveness and exceptional adjustment precision with an error margin of no more than 10%. Its compact design outshines traditional heavy hammer pressure reducing valves, making it easy to adapt and install across a variety of industries. Widely utilized in petroleum, chemical, electric power, metallurgy, food production, light textile, machinery manufacturing, and civil construction, the AOC-3000 excels in managing gas, liquid, and steam for pressure reduction, stabilization (both post- and pre-valve), and relief applications.}
 

Actuator Features

 

Figure 1a illustrates the masterful control of the post-control valve pressure regulator, boasting a pressure-closed operation mode. Here's the fascinating principle at work: As the medium enters the valve body, following the directional arrow, it elegantly passes through the valve seat and spool, experiencing a precise throttling process. Meanwhile, an alternate route via the pressure tube allows the medium (when steam is accompanied by a condenser) to engage the actuator and influence the diaphragm. This interaction prompts the spool to adjust its position, ensuring perfect pressure reduction and stabilization. In the event of an increase in pressure post-valve, the diaphragm senses this change, compresses the spring, and guides the spool to diminish the valve's opening until equilibrium is restored at the pre-set pressure level. Conversely, should the pressure drop, the diaphragm's reduced force allows the spring's reaction to expand the valve's opening, maintaining the desired pressure level.

 

Figure 1b showcases the regulator's prowess in managing pre-valve pressure, adopting a pressure-open operation mode. The medium, entering from the designated arrow direction, gracefully traverses through the valve seat and spool, undergoing calculated throttling. Simultaneously, it channels through the pressure tube (aligned with steam and condenser use) to activate the actuator, impacting the diaphragm and causing the spool to adjust, achieving a state of pressure relief and stabilization. As pre-valve pressure escalates, the diaphragm's heightened force compresses the spring, prompting the spool to widen the valve's opening until the pressure is harmonized to the set parameter. Should the pressure recede, the diaphragm's diminished force enables spring tension to coax the spool into reducing the valve opening, steadily reinstating the desired pressure. When pre-valve pressure falls below the set threshold, the valve remains resolutely closed, ensuring optimal safety and functionality.
 

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 optimal performance when regulating gas or low-viscosity liquid media, the AOC-3111 self-operated pressure regulating valve should ideally be mounted upright on a horizontal pipeline. Should spatial constraints arise, alternative positions like upside down or diagonal installations are permissible. Notably, in situations where the medium is verified as clean, the installation of part 3 becomes optional.

 

In applications involving steam or high-viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve is best positioned upside down on a horizontal pipeline. This setup ensures efficient functionality and consistent performance in handling challenging mediums.
 

Production application

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd is a premier producer of control valves, seamlessly blending manufacturing, design, sales, and services under one roof. With a strong foundation and rapid development, SNT is strategically positioned in Qingdao, Shandong Province, spanning over 42,000 square meters. Our state-of-the-art facilities house modern workshops and cutting-edge production equipment. Proudly, we're a high-tech enterprise boasting independent intellectual property rights and have embraced advanced international management and production expertise. Our dedicated team comprises over 150 skilled workers, with 15% engaged in R&D and 30% holding graduate or higher degrees. By leveraging a high-caliber production management team and pioneering technology research, we manufacture substantial volumes of superior quality valves for the petrochemical, oil, and coal chemical sectors. In 2017, we achieved an impressive sales value approaching 100 billion.

SNT has proudly secured the TS special equipment manufacturing certificate and the esteemed ISO 9001 accreditation. We possess the net qualification certificates from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM, along with national patents in numerous technologies. Our design and manufacturing capabilities span the comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By synthesizing the strengths of renowned global valves and focusing on independent R&D, we expertly craft an array of valve types, including GLOBE Valves, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and Three-eccentric Center Butterfly Valves.
Our extensive valve selection also features 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 drive forms encompass manual, power-driven, pneumatic, and hydraulic operation. Key materials include A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, among others. Our specifications range from 1/2" to 120", with working pressures from ANSI 150# to 2500#, and temperature capabilities from -196ºC to 1100ºC.

Leveraging advanced production technologies and a robust quality assurance system, SNT Valves are extensively deployed in petrochemical, oil, steel & iron, paper manufacturing, and power station industries. Our prestigious clientele includes esteemed branches such as SINOPEC QILU, SINOPEC Qingdao, CNOOC Huizhou Refinery, PETROCHINA Guangxi, PETROCHINA Ningxia, and many more.

At SNT, we prioritize our users' profitability, dedicating ourselves to building an exceptional quality brand. Our impeccable quality assurance and after-sales systems ensure that SNT valves forge prosperous partnerships with all our valued customers.