Premium Triple Offset Butterfly Valve - Metal Seated DN80 ANSI Rated

• Customization: Available
• Media: Oil
• Driving Mode: Pneumatic
• Model NO.: AOC-3812
• Connection Form: Flange
• Structure: Three-Eccentric Sealing
• Seal Form: Force Sealed
• Valve Stem: Normal
• Work Pressure: High Pressure (10.0mpa< Pn <80.0mpa)
• Working Temperature: Normal Temperature (-40°C<T<120°C)
• Material of Seal Surface: Metal Hard Sealed
• Valve Body: Forge Welding
• Standard: Sil/API
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Body Size: 3′′(80A)-24′′(1500A)
• Body Rating: ANSI Class 150-600 Pn10-Pn110
• Valve Model: DN80/Port DN 80mm
• Connection: Flange/RF
• Flow Characteristic: on-off
• Body Mat.: A216 Wcb/A351CF8m
• Actuator: Pneumatic/Electric
• Stem Mat.: 17-4pH H900
• Seat Mat./Packing: PTFE
• Bonnet Type: Standard
• Air Supply: 0.4MPa
• Valve Stroke: 90 Degree
• Leakage Class: ANSI B16.104V
• Disc Material: A216 Wcb/A351CF8m
• Temp. Range: -20~200 Degree
• Transport Package: Bubble Bags and Wooden Box
• Specification: 110.00cm * 110.00cm * 90.00cm
• Trademark: SNT
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000PCS/Year

Product Description

 

About SNT Butterfly Valves

^{With a legacy of unparalleled craftsmanship, SNT Machinery (Qingdao) Co., Ltd. boasts a unique design coupled with advanced processing techniques, backed by over a decade of expertise in the exploration and manufacturing of butterfly valves. We deliver tailored solutions for a myriad of challenging and demanding service conditions. Our butterfly valves are a beacon of market competitiveness, rigorously designed in conformity with international standards such as ASME B16.34-2009, GB/T12221-1989, and AP1607-2009. This distinguished series finds extensive applications across diverse sectors including petroleum, chemical, light industry, pharmaceuticals, paper making, metallurgy, and the rubber industry.}
The AOC-3812 series triple offset butterfly valve is engineered to provide a bi-directional, bubble-tight shut-off. The innovative geometry ensures that...
the disc seal engages with the body seat exclusively at the final shut-off position without any rubbing or galling, ensuring a torque-optimized operation.
generated resilient seal bolstered by adequate 'wedging' to guarantee a robust performance.

 

Product Specifications

 

Body Type	AOC-3811			AOC-3812
Body Size	3''(80A)-24''(600A)			3''(80A)-24''(1500A)
Body Rating	ANSI Class 150-600 PN150-600 PN10-PN110
Fluid Temperature	-196~+500ºC			-196~+500ºC
Connections	Wafer Type/RF/Lug Type			RF Flanged
Body Materials	A216 WCB/A351 CF8/A351 CF8M,etc
Disc Materials	A216 WCB/A351 CF8/A351 CF8M,etc
Disc Treatment	Chrome Plated or Stellited
Range-ability	60 degree Opening/25:1; 90 degree Opening/50:1
Flow Characteristiscs	Approximater Eq%(Inherent Characteristic)
Seal Ring Type	FN	FV	CS	KS	FM	M
Seal Raing Materials	R.TFE	R.TFE	R.TFE	Kel-F	316+Graphite	316SS
Back Ring Materials	NBR	VITON	SUS316	SUS316	316SS	316SS
Seat Leakage	ANSI Class IV/V/VI			ANSI Class VI
Actuator Combinations	Pneumatic Cylinder Actuator/Electronic Actuator/Pneumatic Diaphragm Actuator

 

Principle Of Operation

 

Principle Of Operation

The SNT Triple Offset Butterfly Valve masterfully delivers bi-directional, bubble-tight shut-off capabilities. Its ingenious design ensures that the disc seal only contacts the body seat at the final shut-off position, eliminating any rubbing or galling. This results in a torque-generated resilient seal with ample 'wedging' action, guaranteeing uniform seal contact for superior sealing performance.

The Triple Offset Geometry

Offset 1 - Ingeniously designed, the shaft is offset behind the seat axis. This strategic positioning allows for a complete sealing contact around the entire seat, ensuring exceptional sealing integrity.
Offset 2 - The shaft's centerline is cleverly offset from both the pipe and the valve, facilitating an interference-free opening and closing experience that enhances the valve's efficiency and longevity.
Offset 3 - By offsetting the seat cone axis from the shaft centerline, this design innovation eliminates friction during the valve's closing and opening cycles. This ensures uniform compressive sealing across the entire seat, promoting durability and reliability in every operation.

Valve Construction

 

Ingenious Design of Triple-Eccentric: Crafted for the most challenging conditions, our design excels under high temperature and pressure, ensuring minimal leakage. Experience smooth, frictionless operation with low torque, enhancing sealing efficacy with increasing fluid force.

Robust Integral Structure: The seat ring seamlessly merges with the body, with a sealing face surfaced by a high-strength alloy, promising unmatched reliability.
This superior sealing surface maximizes durability, rendering it virtually maintenance-free.

Stepped Seal for Enhanced Security: Guarantees safety with a high-strength integral stem, boosting allowable pressure drops.

Innovative Driving Method: Offset round pin design avoids stem weakening due to drilling, enhancing shear strength, reliability, and safety.

Advanced Stem Sealing Design: High-temperature resistant, non-metallic materials prevent particle-laden fluids from entering bearings, eliminating the risk of locks or jams.

Belleville Springs for Dynamic Loading and Compensation: With a meticulously engineered packing system, dynamic loading and Belleville springs' compensation meet the stringent ta-luft standards with precision-processed stems, ensuring zero packing emissions.

Diverse Sealing Options: Choose from multi-layer composite, multi-layer all-metal, or integral all-metal seals tailored to differing conditions. The multi-layer composite seals offer flexibility, achieving optimal fit between seat and sea rings, meeting demanding ANSI VI leakage standards.

Thrust Collar Protection: Stem-protecting thrust collar prevents particle accumulation in dead angles, avoiding jams. In reverse flow, it secures the stem against fluid-driven deviations, mitigating leakage.

Effortless Maintenance: With high precision components,
on-site regulation and easy seal ring replacements are a breeze.
 

Production application

 

 

Company Profile

SNT Machinery (Qingdao) Co., Ltd. stands as a beacon of excellence in the realm of control valve production, ingeniously combining manufacturing prowess, cutting-edge design, robust sales, and unparalleled services into one cohesive entity. Rooted in Qingdao, Shandong Province, our expansive 42,000 square meter facility is adorned with state-of-the-art workshops and advanced production equipment. Proudly positioned as a high-tech enterprise, we possess independent intellectual property rights and have seamlessly integrated imported advanced management and production experiences into our operations. Our dedicated team comprises over 150 employees, with an impressive 15% dedicated to R&D and 30% boasting graduate-level or higher degrees. This synergy of a high-quality production management team and innovative R&D ensures our prolific output of top-tier valves, serving vital sectors such as petrochemical, oil, and coal chemical industries. Our sales prowess reached a remarkable milestone of nearly 100 billion in 2017, testament to our industry leadership.

SNT has proudly achieved the TS special equipment manufacturing certificate and the prestigious ISO 9001 accreditation. Our exceptional standards have garnered net qualification certificates from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our technological ingenuity is further underscored by numerous national patents. We are adept at designing and manufacturing a comprehensive array of valves in accordance with ANSI, API, DIN, BS, and JIS standards. By harnessing the strengths of globally renowned valves and fostering independent R&D, we excel in producing an extensive range of valve types, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and Three-eccentric Center Butterfly Valves.
Our formidable lineup 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 diverse driving forms such as manual operation, power-driven, pneumatic, and hydraulic drive, we cater to a wide spectrum of needs. Our main components are crafted from premium materials, including A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, and more. Specifications span from 1/2" to an expansive 120", accommodating working pressures from ANSI 150# to 2500#, and operable in temperatures ranging from a frigid -196ºC to a scorching 1100ºC.

With advanced production technology management and a steadfast quality assurance system, SNT Valves have seamlessly integrated into industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele includes notable names such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, Jinan branch, and many more, all of whom trust in the reliability and superior craftsmanship of our valves.

Placing our customers' profits at the forefront of our mission, we are unwaveringly committed to the establishment of an exemplary quality and esteemed brand. Our comprehensive quality assurance and after-sales systems ensure that SNT valves foster prosperous partnerships, joining hands with our valued customers to create shared success and remarkable prosperity.