Nps3/4′′-Nps12′′ for Nominal Diameter/Flanged Compact Self-Operated Pressure Regulator with CF8m Body Materials 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

_{Introducing the AOC-3000 Self-Operated Pressure Regulating Valve, a pioneering solution for seamless pressure regulation without the need for external energy sources. This state-of-the-art valve leverages the inherent energy of the regulated medium, making it ideal for settings devoid of electricity or gas, while championing energy conservation. Featuring versatile pressure setting adjustments, this valve adapts effortlessly to varying requirements. What sets the AOC-3000 apart is its trio of valve configurations, tailored to meet the diverse demands of different processes: choose from the AOC-3111 for single-seated applications, the AOC-3113 for sleeve configurations, or the AOC-3114 for double-seated operations. Each option is crafted to suit specific working conditions, such as differential pressure, temperature, medium state, and leakage necessities. Our AOC-3000 valves come equipped with three sophisticated actuator types to suit different process needs: the classic diaphragm (available in normal and reinforced variants), the robust piston, and the innovative metal diaphragm (bellows). With its rapid-opening flow characteristics, this valve promises responsive action and remarkable precision (with an accuracy error of just ≤10%). Compact and easy to adjust, the AOC-3000 is the preferred choice across industries-be it petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, or civil construction. It excels in the regulation, stabilization, and relief of gas, liquid, and steam pressures, both pre- and post-valve adjustments.}
 

Actuator Features

 

Figure 1a: An advanced system tailored for controlling the post-control valve pressure regulator. This remarkable valve operates on a pressure-closed mechanism. Its operational principle is elegantly straightforward: the medium enters the valve body as indicated by the arrow, then passes through the valve seat and spool, undergoing throttling and exiting efficiently. Meanwhile, the pressure tube (and condenser for steam mediums) channels the medium to the actuator, exerting force on the diaphragm. This orchestrates a precise displacement of the spool, achieving seamless pressure reduction and stability. When downstream pressure rises, it amplifies the force on the diaphragm, compressing the spring and modulating the spool to minimize valve opening, restoring pressure to the set threshold. Conversely, a drop in pressure reduces diaphragm force, enabling the spring's reaction to increase valve opening until equilibrium is restored.

 

Figure 1b: Expertly engineered to manage pressure preceding the valve, this regulator boasts a pressure-open mode of operation. The medium gracefully enters the valve body, guided by the arrow, proceeds through the valve seat and spool, and undergoes throttling before seamless exit. Simultaneously, the pressure tube (with steam mediums incorporating a condenser) directs the medium to engage the actuator, pressing on the diaphragm and causing a controlled spool displacement. This facilitates precise pressure relief and stabilization. Should upstream pressure heighten, increased diaphragm tension compresses the spring, enlarging the valve's opening to alleviate pressure back to the set level. Conversely, a decline in upstream pressure decreases diaphragm force, the spring's reaction prompting a reduction in valve opening to maintain the desired pressure level. Should upstream pressure fall below the threshold, the valve remains closed to safeguard stability.
 

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 in gas or low viscosity liquid media, the AOC-3111 self-operated pressure regulating valve is customarily mounted upright on a horizontal pipe. This ideal setup ensures seamless operation and maximum efficiency. However, when spatial constraints arise, the valve may be positioned either upside down or diagonally. If the medium is confirmed to be clean, part 3 can be omitted, contributing to a more streamlined installation.

 

When dealing with steam or high viscosity liquid media, the AOC-3111 self-operated pressure regulating valve demonstrates its versatility by being predominantly installed upside down on a horizontal pipe. This configuration is tailored to meet the demands of more challenging media, ensuring robust performance and reliability in diverse industrial applications.
 

Production application

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd. is a distinguished leader in the production of control valves, seamlessly integrating manufacturing, design, sales, and service into a unified entity. Founded with a vision of rapid development, SNT boasts a strategic location in Qingdao, Shandong province, sprawling across a vast area of 42,000 square meters. Our state-of-the-art facilities are equipped with cutting-edge production equipment, embodying our status as a high-tech enterprise with independent intellectual property rights and a wealth of imported expertise in management and production. With a dedicated workforce of over 150 employees, where 15% are R&D specialists and 30% are either graduates or hold advanced degrees, SNT thrives on a foundation of superior production management and innovative technological research. Our commitment to excellence has resulted in the mass production of top-tier valves, serving prominent sectors such as petrochemical, oil, and coal chemical industries, reaching an impressive sales value nearing 100 billion in 2017.

SNT has attained the prestigious TS special equipment manufacturing certificate and ISO 9001 accreditation, further solidifying our credibility with the acquisition of net qualification certificates from leading entities SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovative prowess is reflected in numerous National Patents across various technologies. We excel in designing and manufacturing a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By harnessing the strengths of globally renowned valve technologies and fostering independent R&D, we now offer an extensive array of valves. This includes GLOBE valves, 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 product line extends to 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 mechanisms encompass manual, power-driven, pneumatic, and hydraulic options. The primary materials for these components include A216 WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, ensuring durability and reliability. With specifications ranging from 1/2" to an impressive 120", they operate efficiently under working pressures of ANSI 150# to 2500#, and withstand extreme temperatures from -196ºC to 1100ºC.

Thanks to our advanced production technology management and robust quality assurance framework, SNT Valves have found wide-ranging applications across the petrochemical, oil, steel & iron, paper manufacturing, and power station industries. Our esteemed clientele includes SINOPEC's QILU and Qingdao branches, CNOOC Huizhou Refinery, PETROCHINA Guangxi and Ningxia branches, SINOPEC Qingdao Refinery, and many more renowned organizations.

At SNT, we prioritize our users' success, dedicating ourselves to fostering a reputation for exceptional quality and a prestigious brand identity. Our comprehensive quality assurance and after-sales systems ensure that SNT valves consistently align with our customers' needs, paving the way for collective success and shared prosperity.