Durable Self-Operated Pressure Regulator for Zg0cr18ni12mo2ti and CF8m

• Customization: Available
• Temperature: Ordinary Temperature
• Certification: GS, RoHS, CE, ISO9001
• Model NO.: AOC-3111B
• 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 gas or low-viscosity liquid media applications, the AOC-3111 self-operated pressure regulating valve from SNT Machinery (Qingdao) Co., Ltd. is typically mounted in an upright position on a horizontal pipe. Exceptions to this positioning may occur when space constraints dictate an upside down or diagonal arrangement. In scenarios where the medium is verified to be clean, the installation of part 3 is not required, streamlining the setup process.

 

In applications involving steam or high-viscosity liquids, the preferred installation method for the AOC-3111 self-operated pressure regulating valve is an upside-down orientation on a horizontal pipe. This arrangement ensures optimal performance and reliability, especially in demanding conditions.

 

Product Description

_{Introducing the AOC-3000, a remarkable self-operated pressure regulating valve that exemplifies innovation in energy efficiency. This cutting-edge product harnesses the power of the regulated medium's own energy, eliminating the need for external energy sources like electricity or gas. Its unparalleled versatility makes it an ideal choice for locations lacking traditional power sources, offering substantial energy conservation. The AOC-3000 allows for flexible pressure setting adjustments within a specified range, catering to diverse industrial applications. Tailored to meet the varied demands of different process scenarios, this valve comes in three distinct forms: the AOC-3111, a single-seated variant; the AOC-3113, a sleeve-type model; and the AOC-3114, a double-seated design, each selected based on specific working conditions such as differential pressure, temperature, medium state, and leakage requirements. Moreover, the AOC-3000 features three types of actuators: the diaphragm, available in both standard and reinforced versions, the piston actuator, and the robust metal diaphragm (bellows). Its fast-opening flow characteristics ensure precise and responsive adjustments, maintaining an impressive accuracy with an error margin of ≤10%. Compact and user-friendly, the AOC-3000 occupies minimal space compared to conventional heavy hammer-type pressure reducing valves, streamlining installation and adjustment processes. This versatility has led to its widespread application across a multitude of sectors, including petroleum, chemical, electric power, metallurgy, food processing, light textile, machinery manufacturing, and civil construction, where it efficiently manages gas, liquid, and steam pressure reduction, stabilization, and relief for both post-valve and pre-valve adjustments.}
 

Actuator Features

 

Figure 1a elegantly illustrates the sophisticated mechanism used to expertly control the post-control valve pressure regulator, designed with precision as a pressure-closed type. Delving into the principle of action: the medium gracefully flows into the valve body, guided by the arrow, and is meticulously output by the valve seat and spool after a crucial throttling. Additionally, via an alternative path through the pressure tube (especially when the medium is steam coupled with a condenser), it is introduced into the actuator to perform upon the diaphragm. This causes the spool to undergo a corresponding displacement, thereby achieving the dual objectives of pressure reduction and stabilization. In instances where the pressure post-valve surges, the diaphragm experiences increased force, compressing the spring and dynamically driving the spool, thereby reducing the valve's opening until the desired set pressure is reestablished. Conversely, when the post-valve pressure diminishes, the force on the diaphragm wanes, allowing the spring's reaction force to propel the spool, thus enhancing the valve's opening until the pressure behind the valve ascends to the predetermined value.

 

Figure 1b gracefully presents the regulator designed to masterfully control the pressure preceding the valve, operating in a pressure-open mode. The principle of action unfolds as follows: the medium flows into the valve body, driven by the directional arrow, and exits post-throttle via the valve seat and spool. In an alternate route, through the pressure tube (particularly when involving steam and a condenser), it engages the actuator, impacting the diaphragm to prompt the spool's corresponding displacement, achieving the goals of pressure relief and stabilization. As pressure intensifies in front of the valve, the diaphragm endures increased force, compressing the spring and urging the spool to widen the valve's opening until the pressure declines to the desired set level. Conversely, if the pressure diminishes, the diaphragm experiences less force, and the spring's reactive energy propels the spool, reducing valve opening until the pressure elevates back to the set benchmark. When the front-valve pressure falls below the set threshold, the valve remains resolutely 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

 

Production application

 

 

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd. is a leading manufacturer of control valves, seamlessly integrating design, manufacturing, sales, and service to deliver exceptional solutions. Strategically positioned in Qingdao, Shandong Province, our sprawling 42,000m² facility boasts state-of-the-art workshops and cutting-edge production equipment. As a forward-thinking high-tech enterprise with proprietary intellectual property, we leverage global management and production advancements. Our dynamic team consists of over 150 dedicated professionals, with 15% specializing in R&D and 30% holding graduate degrees or higher. Anchored by superior production management and pioneering R&D, we specialize in producing an array of high-quality valves tailored for the petrochemical, oil, and coal chemical sectors. Our impressive sales reached nearly 100 billion in 2017, underscoring our industry leadership.

SNT has proudly secured the TS Special Equipment Manufacturing Certificate and ISO 9001 certification, along with certification from SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovative technologies have earned National Patents, showcasing our commitment to excellence. We design and manufacture a comprehensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By harnessing the strengths of globally renowned valves and our robust R&D, we craft a diverse lineup including GLOBE Valves, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves. Our expertise extends to 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.
Our valves operate with various driving forms, including manual, power-driven, pneumatic, and hydraulic mechanisms. Constructed from premium materials like A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, they accommodate specifications from 1/2" to 120", withstand working pressures from ANSI 150# to 2500#, and endure temperatures from -196ºC to 1100ºC.

Leveraging cutting-edge production technology management and a rigorous quality assurance system, SNT Valves have found extensive application across petrochemical, oil, steel & iron, paper manufacturing, and power station industries. Esteemed clients include SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and SINOPEC Changling branch, among others.

Prioritizing customer profitability, we are dedicated to establishing a formidable brand and delivering unparalleled quality. Our comprehensive quality assurance and after-sales support ensure that SNT valves not only meet but exceed expectations, forging prosperous partnerships with all our valued clients.