Heavy-Duty Self-Operated Pressure Regulator for Reliable Valve Systems with Carbon Steel Materials

• Customization: Available
• Temperature: Ordinary Temperature
• Certification: GS, RoHS, CE, ISO9001
• Model NO.: AOC-3111K
• Media: Gas, Oil, Water, Acid
• 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

_{Introducing the AOC-3000, a groundbreaking self-operated pressure regulating valve designed for excellence in energy efficiency and autonomous operation. This innovative executive product harnesses the power of the regulated medium's own energy, eliminating the need for external power sources like electricity or gas. It's perfect for environments where energy conservation is crucial. One of the standout features of the AOC-3000 is its flexible pressure setting, which can be adjusted within a specified range to meet diverse operational needs. This versatile valve is offered in three distinct forms to cater to various process requirements, including: - 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 Users can select the ideal valve based on working conditions, such as differential pressure, temperature, medium state, and specific leakage demands. Furthermore, the AOC-3000 is available in three actuator types for diverse process situations: diaphragm (with both normal and reinforced options), piston, and metal diaphragm (bellows). These options ensure optimal performance tailored to your needs. With fast-opening flow characteristics, this valve promises sensitive responses and high adjustment accuracy, maintaining an error margin of ≤10%. Its compact design ensures it occupies minimal space, especially when compared to traditional heavy hammer-type pressure reducing valves, facilitating easy adjustments. The AOC-3000 self-acting pressure regulating valve finds extensive application in industries such as petroleum, chemical, electric power, metallurgy, food processing, textile, machinery manufacturing, and civil construction. It excels in gas, liquid, and steam pressure reduction, stabilization (both post-valve and pre-valve adjustment), and pressure relief, making it the go-to solution for sophisticated pressure management systems.}
 

Actuator Features

 

Figure 1a: This magnificent illustration reveals the sophisticated mechanism used to control the post-control valve pressure regulator, featuring a pressure-closed valve action mode. Here's how it works: as the medium gracefully enters the valve body, following the directional arrow, it undergoes a precise throttling process before elegantly exiting through the valve seat and spool. Meanwhile, the pressure tube-specifically utilized for steam mediums with a condenser-channels the medium into the actuator, engaging the diaphragm in a delicate dance of pressure dynamics. This interaction triggers a displacement in the spool, skillfully reducing and stabilizing pressure. Should the pressure post-valve rise, the diaphragm's increased force masterfully compresses the spring, guiding the spool towards a more closed position, restoring equilibrium as the pressure gently reverts to its set value. Conversely, a decrease in post-valve pressure relieves the force on the diaphragm, allowing the spring's reactive power to artfully drive the spool, expanding the valve's opening until the pressure gracefully ascends back to its designated value.

 

Figure 1b: This enlightening diagram showcases the intricate regulator designed to masterfully control pre-valve pressure, operating with a pressure-open valve action mode. The operation is as follows: the medium graciously streams into the valve body, guided by the arrow's direction, engaging in a meticulous throttling process before making its exit through the valve seat and spool. Simultaneously, the sophisticated pressure tube-ideal for steam mediums with a condenser-introduces the medium into the actuator, where it skillfully acts upon the diaphragm. This interaction orchestrates a nuanced displacement of the spool, achieving a seamless pressure relief and stabilization. When the pre-valve pressure mounts, the diaphragm's intensifying force artfully compresses the spring, coaxing the spool to expand the valve's opening, restoring balance as the pressure drops to its intended level. Similarly, when the pre-valve pressure wanes, the force on the diaphragm lessens, allowing the spring's retaliatory force to gracefully guide the spool back, closing the valve until the pre-valve pressure serenely rises to its set value. In scenarios where the pre-valve pressure dips below the set value, rest assured, the valve remains steadfastly 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

Mounting Method

 

In scenarios where the valve is integrated into gas or low viscosity liquid environments, the esteemed AOC-3111 type self-operated pressure regulating valve from SNT Machinery (Qingdao) Co., Ltd. is traditionally mounted in an upright fashion on a horizontal pipe. This configuration ensures optimal performance and reliability. However, should the available space be constrained, the valve may be installed upside down or diagonally. It is noteworthy that if the medium is certified as clean, the installation of part 3 may be deemed unnecessary.

 

For applications involving steam or high viscosity liquid media, the AOC-3111 type self-operated pressure regulating valve is predominantly installed upside down on a horizontal pipe. This orientation is crucial for maintaining the valve's efficiency and operational integrity in such demanding conditions.
 

Production application

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd. stands as a pioneering leader in the realm of control valve production, seamlessly integrating manufacturing, innovative design, dynamic sales, and unparalleled services. Positioned for rapid growth and success, SNT is strategically located in the bustling city of Qingdao, Shandong Province, sprawling over an impressive 42,000 square meters. Our state-of-the-art facilities, brimming with modern workshops and cutting-edge production equipment, reflect our commitment to technological excellence. As a high-tech enterprise, we pride ourselves on our independent intellectual property rights and leverage world-class management and production methodologies. With a dedicated team of over 150 skilled employees, 15% of whom are R&D specialists and 30% are graduates with advanced degrees, we are at the forefront of innovation. Our exceptional production management and pioneering research have led to the creation of high-quality valves, serving the petrochemical, oil, and coal chemical sectors. In 2017, our sales soared to nearly 100 billion, underscoring our industry dominance.

SNT Machinery has achieved significant milestones by securing the TS Special Equipment Manufacturing Certificate and ISO 9001 certification. We have proudly earned net qualification certificates from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM, alongside numerous national patents for our groundbreaking technologies. Our expertise extends to designing and manufacturing an extensive range of valves that adhere to prestigious standards including ANSI, API, DIN, BS, and JIS. By amalgamating the strengths of globally renowned valve technologies with our proprietary R&D, we offer an expansive array of valve types: Globe Valves, High-Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and T Three-eccentric Center Butterfly Valves.
At SNT Machinery, we offer an extensive selection of valves designed to meet diverse industrial needs: 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 valves are available with a variety of driving mechanisms, including manual operation, power-driven, pneumatic, and hydraulic systems. We utilize top-tier materials for crucial components, such as A216 WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. Our product specifications range from 1/2" to 120" with a working pressure capacity of ANSI 150# to 2500#, and a wide operating temperature range from -196ºC to 1100ºC.

Empowered by cutting-edge production technology and a robust quality assurance system, SNT Valves have gained widespread acclaim across industries including petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele comprises influential branches such as SINOPEC QILU, SINOPEC Qingdao, CNOOC Huizhou Refinery, PETROCHINA Guangxi, PETROCHINA Ningxia, SINOPEC Changling, Jinan branch, and others, testifying to our unparalleled quality and reliability.

At SNT Machinery, we prioritize our customers' success, dedicating ourselves to building a brand synonymous with exceptional quality and reliability. Our comprehensive quality assurance and after-sales service systems ensure that SNT Valves consistently meet the highest standards, fostering prosperous partnerships and shared success with all our valued clients.