ANSI 150-600 for Nominal Pressure for Flanged High-Quality Self-Operated Pressure Regulator for Butt Weld Applications

• 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: a revolutionary self-operated pressure regulating valve by SNT Machinery (Qingdao) Co., Ltd. This cutting-edge executive product harnesses the energy of the medium it regulates, eliminating the need for external power sources such as electricity or gas. Perfect for remote or resource-scarce environments, it offers unmatched energy efficiency. Effortlessly adjust the pressure setting within a versatile range to meet your specific needs. Tailored for diverse process scenarios, the AOC-3000 is available in three innovative valve forms: the AOC-3111 single-seated valve, the AOC-3113 sleeve valve, and the AOC-3114 double-seated valve, allowing customization based on working conditions, including differential pressure, temperature, medium state, and leakage requirements. Choose from three actuator types-diaphragm, piston, and metal diaphragm (bellows)-to match your operational demands. With its fast-opening flow characteristics, the AOC-3000 delivers sensitive performance and exceptional adjustment precision (error ≤10%). Its compact design, compared to the heavier hammer type pressure reducing valve, ensures effortless installation and adjustment. Widely acclaimed across industries such as petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, and civil construction, it excels in gas, liquid, and steam pressure reduction, stabilization, and relief, both post- and pre-valve adjustment.}
 

Actuator Features

 

Figure 1a presents a remarkable mechanism designed for the precise control of post-control valve pressure using a pressure-closed valve action mode. Here's how it works: The medium gracefully flows into the valve body along the arrow's direction and is skillfully outputted through the valve seat and spool after throttling. Meanwhile, via the pressure tube (add a condenser if the medium is steam), the medium enters the actuator, acting on the diaphragm, which in turn causes the spool to make the necessary displacement, achieving seamless pressure reduction and stabilization. If post-valve pressure rises, the diaphragm's force increases, compressing the spring and maneuvering the spool to decrease the valve's opening until the pressure recedes to its ideal set value. Conversely, if the post-valve pressure diminishes, the diaphragm force decreases and the spring's reaction force drives the spool to expand the valve's opening, restoring pressure to its perfect setpoint.

 

Figure 1b showcases an innovative regulator, adept at managing pressure in front of the valve with a pressure-open valve action mode. The operation is as follows: The medium navigates into the valve body from the arrow's direction, skillfully outputted by the valve seat and spool after throttling. Concurrently, through the pressure tube (add a condenser if steam is involved), the medium engages the actuator, influencing the diaphragm, prompting the spool to adjust its displacement to ensure effective pressure relief and stabilization. An increase in pre-valve pressure heightens the diaphragm's force, compressing the spring and prompting the spool to widen the valve opening until the pressure gracefully decreases to its set threshold. Similarly, a decrease in pre-valve pressure reduces the diaphragm's force, and with the spring's reaction, the spool is urged to narrow the valve's opening, maintaining the pressure at its optimum level. If the pressure drops below the set threshold, the valve remains securely 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

 

For the utmost efficiency, when the valve is utilized in gas or low-viscosity liquid mediums, the AOC-3111 self-operated pressure regulating valve is customarily positioned upright on a horizontal pipe. It may be installed upside down or at an angle only when spatial constraints necessitate such adjustments. Notably, if the medium is verified as clean, there is no requirement to install part 3, enhancing flexibility and ease of installation.

 

In scenarios involving steam or high-viscosity liquid mediums, the AOC-3111 self-operated pressure regulating valve is predominantly installed in an inverted position on a horizontal pipe. This approach ensures optimal performance and reliability under challenging conditions, making it an indispensable component in demanding environments.
 

Production application

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd. stands as a leading luminary in the realm of control valves, seamlessly integrating manufacturing, innovative designing, sales, and exemplary services into one cohesive entity. Strategically positioned in Qingdao, Shandong province, SNT spans a vast area of 42,000m², showcasing state-of-the-art workshops and production equipment. As a beacon of technological advancement, SNT is a high-tech enterprise boasting independent intellectual property rights, fortified by the infusion of avant-garde management and production insights from across the globe. With a dynamic workforce exceeding 150, where 15% are R&D specialists and 30% are graduates or possess advanced degrees, SNT thrives on the synergy of a top-tier production management team and pioneering technology development. Our prolific output of superior quality valves caters extensively to the petrochemical, oil, and coal chemical sectors, culminating in a remarkable sales milestone of nearly 100 billion in 2017.

SNT has proudly acquired the coveted TS special equipment manufacturing certificate and the prestigious ISO 9001 certification, along with the esteemed net qualification certificate from industry giants SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Bolstered by a suite of national patents across a multitude of technologies, SNT is adept at crafting a comprehensive array of valves in strict adherence to standards such as ANSI, API, DIN, BS, and JIS. By amalgamating the strengths of renowned valves globally with our independent research prowess, SNT is proficient in producing an extensive range of valves, including but not limited to GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and T Three-eccentric Center Butterfly.
Our expansive valve repertoire 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, offering versatile driving options such as manual operation, power-driven, pneumatic, and hydraulic. Precision-crafted from premium materials like A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M, our specifications range from 1/2"~120", withstanding working pressures from ANSI 150#~2500# and operating temperatures spanning -196ºC to 1100ºC.

With our cutting-edge production technology management and a robust quality assurance framework, SNT Valves have earned widespread acclaim across industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele includes industry behemoths like SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and many more, cementing our reputation as a trusted partner.

At SNT, we prioritize our users' profits, dedicating ourselves to forging a legacy of unparalleled quality and a distinguished brand. Our impeccable quality assurance and after-sales systems ensure that SNT valves stand the test of time, fostering enduring partnerships with our valued customers and paving the way for shared prosperity.