Efficient Self-Operated Pressure Regulator with A216 Wcb and Zg0cr18ni12mo2ti

• 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 in gas or low viscosity liquid media, the AOC-3111 Self-Operated Pressure Regulating Valve is best mounted vertically on a horizontal pipeline. In cases where space constraints exist, the valve may be installed upside down or at an angle, ensuring versatile adaptability. Note: If the medium is verified to be clean, the installation of part 3 is optional, further simplifying the process.

 

In scenarios involving steam or high viscosity liquid media, the AOC-3111 Self-Operated Pressure Regulating Valve demonstrates its excellent functionality when mounted upside down on a horizontal pipeline. This configuration enhances the valve's efficiency and reliability.

 

Product Description

_{Introducing the AOC-3000 Self-Operated Pressure Regulating Valve, a revolutionary product from SNT Machinery (Qingdao) Co., Ltd., that epitomizes efficiency and sustainability. This groundbreaking valve operates independently, relying solely on the energy of the medium it regulates, eliminating the need for external power sources such as electricity or gas. This not only makes it ideal for remote locations but also contributes to remarkable energy savings. The AOC-3000's adjustable pressure settings offer unparalleled flexibility, catering to a wide range of applications. It is expertly designed in three distinct forms to meet various process requirements: the AOC-3111 for single-seated applications, the AOC-3113 for sleeve variations, and the AOC-3114 for double-seated setups. Users can select the appropriate model based on working conditions such as differential pressure, temperature, medium state, and leakage specifications. For different process scenarios, the AOC-3000 is available with three types of actuators: standard or reinforced diaphragm, piston, and metal diaphragm (bellows), ensuring optimal performance across diverse industrial environments. Its fast-opening flow characteristics and sensitive, precise regulation (with an error margin of ≤10%) make it an outstanding choice. Taking up minimal space compared to traditional heavy hammer-type pressure reducing valves, the AOC-3000 is incredibly easy to adjust. Its versatility makes it indispensable across industries including petroleum, chemical, electric power, metallurgy, food processing, light textile, machinery manufacturing, and civil construction, effectively managing gas, liquid, and steam for pressure reduction, stabilization, and relief, whether for pre- or post-valve applications.}
 

Actuator Features

 

Figure 1a illustrates the cutting-edge mechanism employed to masterfully regulate the post-control valve pressure within this state-of-the-art pressure-closed type regulator. The operational ingenuity is captured as follows: the medium elegantly flows into the valve body following the arrow's path, then gracefully transitions through the valve seat and spool, experiencing precise throttling. Another passage available through the pressure tube (for steam mediums enhanced by a condenser) channels into the actuator, diligently exerting force on the diaphragm, prompting the spool to undergo a strategic displacement. This entire choreography results in the seamless reduction and stabilization of pressure. Should the pressure beyond the valve swell, a heightened force on the diaphragm compresses the spring, methodically driving the spool, consequently narrowing the valve's aperture until equilibrium is restored to the desired set value. In a mirrored response, when the pressure subsides, the diaphragm's force diminishes, allowing the spring's resilience to guide the spool in expanding the valve's opening, achieving optimal pressure once more.

 

Figure 1b unveils the sophisticated dynamics of a regulator ingeniously crafted to command the pressure before the valve, embodying a pressure-open type modality. The action commences as the medium flows with precision into the valve body, adhering to the arrow's direction, and emerges from the valve seat and spool post-throttling. In parallel, the pressure tube (accompanied by a steam medium plus condenser) leads to the actuator, where it influences the diaphragm, setting the spool into a dynamic displacement, orchestrating pressure relief and stability. When pressure intensifies before the valve, the diaphragm feels an increased force, compressing the spring, thus driving the spool to amplify the valve's aperture until the pressure gently descends to its predetermined set value. Conversely, a decline in pressure diminishes the diaphragm's force, with the spring's counteraction guiding the spool to modulate the valve's opening, re-establishing the intended pressure. Should the pressure fall short of the set value, the valve remains persistently closed, ensuring impeccable control.
 

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 pioneer in the production of control valves, seamlessly integrating manufacturing, design, sales, and service under one roof. With an impressive commencement and rapid development, SNT thrives in Qingdao, Shandong province, sprawling over a vast 42,000m2 area, housing state-of-the-art workshops and production facilities. As a high-tech enterprise boasting independent intellectual property rights, SNT has embraced advanced management and production techniques from abroad. Our team, over 150 strong, includes 15% R&D specialists and 30% holders of graduate or higher degrees. Thanks to our elite production management team and cutting-edge R&D, we produce vast quantities of superior-quality valves for the petrochemical, oil, and coal chemical industries. Our remarkable sales reached nearly 100 billion in 2017.

SNT proudly holds the TS special equipment manufacturing certificate and ISO 9001, alongside prestigious net qualification certificates from SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovations have been recognized with numerous National Patents. We expertly design and manufacture a comprehensive array of valves conforming to ANSI, API, DIN, BS, and JIS standards. By merging the strengths of globally renowned valves with our own innovation, we craft a diverse range of valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves.
Our extensive valve lineup also features T Three-eccentric Center Butterfly Valves, V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogenic Valves, and more. These valves are driven by manual, power-driven, pneumatic, and hydraulic methods. The primary materials include A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, ensuring robust performance. Our specifications range from 1/2"~120", with working pressures of ANSI 150#~2500# and temperatures spanning -196ºC~1100ºC.

Leveraging sophisticated production technology management and a solid quality assurance system, SNT Valves have found extensive application in petrochemical, oil, steel & iron, paper manufacturing, and power station sectors. Our esteemed clientele comprises SINOPEC QILU and Qingdao branches, CNOOC Huizhou Refinery, PETROCHINA Guangxi and Ningxia branches, and SINOPEC Changling and Jinan branches, among others.

Prioritizing user profits, we are dedicated to forging a reputation of exceptional quality and a revered brand. Our impeccable quality assurance and comprehensive after-sales systems ensure that SNT Valves creates enduring partnerships with our clients, fostering shared prosperity and success.