Durable Self-Operated Pressure Regulator for Zg0cr18ni12mo2ti and A351 CF3

• 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 applications dealing with gas or low-viscosity liquid media, the AOC-3111 self-operated pressure regulating valve by SNT Machinery (Qingdao) Co., Ltd. is typically mounted in an upright position on horizontal pipelines. In instances where space constraints arise, installation can be adjusted to an upside-down or diagonal configuration. It's important to note that if the medium is verified as clean, the installation of part 3 might not be necessary, providing added convenience and flexibility.

 

In scenarios involving steam or high-viscosity liquid media, the recommended installation for the AOC-3111 self-operated pressure regulating valve is in an upside-down orientation on horizontal pipes. This specific setup ensures optimal performance and reliability, catering to the demanding requirements of such media types.

 

Product Description

_{Introducing the AOC-3000, a revolutionary self-operated pressure regulating valve, crafted for excellence without the need for external energy sources. This ingenious device harnesses the energy of the regulated medium itself, making it a perfect solution for locations lacking electricity or gas, significantly conserving energy. With adjustable pressure settings within a specific range, it is a model of flexibility and efficiency, meeting the demands of varied process environments. The AOC-3000 is available in three distinct valve forms to suit diverse operational needs: AOC-3111 (single-seated), AOC-3113 (sleeve), and AOC-3114 (double-seated), allowing users to select based on their specific working conditions, including differential pressure, temperature, medium state, and leakage requirements. Furthermore, it offers three actuator types: diaphragm (standard and reinforced), piston, and metal diaphragm (bellows), to cater to the complexities of various industrial processes. Emphasizing rapid-response flow characteristics, it promises swift action and superior accuracy (error ≤10%), occupying minimal space compared to cumbersome alternatives like the heavy hammer type pressure reducing valve. The AOC-3000 is the epitome of practicality and precision, making it ideal for applications across petroleum, chemical, electric power, metallurgy, food, light textile, machinery manufacturing, civil construction, and more. Whether it's gas, liquid, or steam, this valve excels in pressure reduction, stabilization (post-valve adjustment), relief, and pre-valve pressure stabilization, offering unparalleled reliability and performance.}
 

Actuator Features

 

Figure 1a: This highly efficient system regulates the post-control valve pressure with precision. Designed as a pressure-closed type, its operation is seamless and intelligent. Here's how it works: the medium elegantly flows into the valve body following the direction of the arrow. After a refined throttling process, it emerges through the valve seat and spool. Another path leads the medium through the pressure tube-ideal for steam plus condenser environments-into the actuator, engaging the diaphragm to meticulously adjust the spool's position. This sophisticated mechanism achieves impeccable pressure reduction and stabilization. Should the pressure after the valve rise, an enhanced force on the diaphragm compresses the spring, initiating a movement in the spool that gracefully reduces the valve's opening until equilibrium is restored. Conversely, if pressure declines, the decreased force allows the spring's reaction to artfully expand the valve opening, achieving perfect stabilization once more.

 

Figure 1b: Witness the prowess of this regulator as it expertly manages valve inlet pressures with its pressure-open design. The operation is a masterclass in pressure control. Entering through the arrow-indicated direction, the medium undergoes precise throttling via the valve seat and spool. Meanwhile, it travels through the pressure tube-especially effective when handling steam with condensers-engaging the actuator diaphragm. This interaction ensures the spool moves with precision, facilitating pressure relief and stabilization. An increase in inlet pressure boosts diaphragm force, compressing the spring and expanding valve opening to deftly balance the pressure to its intended level. On the other hand, if pressure drops, the diaphragm's force lessens, enabling the spring to elegantly contract the valve opening until the desired pressure is achieved. If the pressure falls below the set threshold, the valve remains steadfastly closed, ensuring optimal 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. stands as a leader in the domain of control valves, harmonizing manufacturing excellence, innovative design, vibrant sales, and exceptional services all under one roof. With a strategic foundation and accelerated growth, SNT resides in the vibrant city of Qingdao, Shandong province, sprawling over an impressive 42,000m2. The facility is a marvel of modern workshops and state-of-the-art production equipment. Recognized as a high-tech enterprise, it boasts independent intellectual property rights, enriched by advanced international management and production techniques. Our dynamic team comprises over 150 dedicated professionals, with 15% as R&D specialists, and an impressive 30% holding graduate or higher degrees. With a stronghold in quality production management and cutting-edge technological innovation, SNT produces large volumes of premium-quality valves integral to the petrochemical, oil, and coal chemical industries. Our remarkable sales performance reached a staggering 100 billion in the year 2017.

SNT is proud to hold the TS Special Equipment Manufacturing License and ISO 9001 certification, along with the coveted net qualification certificates from SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. The company has attained numerous National Patents across diverse technologies. We excel in designing and manufacturing a comprehensive range of valves conforming to ANSI, API, DIN, BS, and JIS standards. By synthesizing the superior attributes of renowned global valves with our proprietary research and development, SNT has forged capabilities in crafting all varieties of valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, 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, and Cryogenic Valves, among others. Our driving mechanisms encompass manual, power-driven, pneumatic, and hydraulic options. Key material choices include A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, etc. Our specifications span from 1/2" to a remarkable 120", with working pressures ranging from ANSI 150# to 2500#, and operational temperatures stretching from a chilly -196ºC to a sweltering 1100ºC.

Leveraging our advanced production technology management and stringent quality assurance systems, SNT valves have become a staple across numerous industries, including petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele features industry giants such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Changling branch, and Jinan branch, among others.

At SNT, we prioritize our customer's profitability, dedicating ourselves to building a reputation of unparalleled quality and a distinguished brand. Our comprehensive quality assurance and robust after-sales systems ensure that SNT valves foster prosperous partnerships with our customers, charting a course towards mutual growth and success.