- Overview
- Product Parameters
- Product Description
- Structure Features
- Our Advantages
- Production application
- Company Profile
Basic Info.
Product Description
Body type | AOC-3843 | AOC3844 |
Body size | 1/2''(40A)-6''(600A) | 1/2''(40A)-24''(600A) |
Body rating | ANSI 150-2500 | ANSI150-2500 |
Fluid temperature | -45~+200ºC | -45~+538ºC |
Connections | RF/BW | |
Body materials | A216WC,A217WC6/9,A351CF8,A351CF8M etc | |
Ball Materials | A182 F304/F316/316L | |
Ball Treatment | Polishing/Hard Chromium Plating | Hard Chromium/Surfacing STL/Spary Ni60/Sparyed tungsten carbide |
Sealing Ring | PTFE/RTFE | Surfacing STL/Spary Ni55/Sparyed tungsten carbide |
Valve seat leakage | API 598 0 leakage | ANSI B16.014V API598 0 leakage |

Forged with unmatched precision, the ball and seat of these exceptional valves are enhanced with advanced hard coatings of chrome carbide or tungsten carbide. This robust fortification provides exceptional resistance to both erosion and abrasion, thereby significantly enhancing their longevity, robustness, and unparalleled reliability.
Our SNT High Performance Soft Seated Ball Valves feature an advanced HVOF coating system, representing the pinnacle of modern valve technology. Each valve undergoes meticulous mate-lapping using proprietary techniques to ensure a flawless 100% sealing. The innovative live loading feature guarantees zero emissions, while maintaining constant contact between the ball and seat, effectively eliminating contaminants. This cutting-edge self-cleaning mechanism prevents interference and damage from particles, making these valves the ideal choice for slurry and abrasive service applications, ensuring a seamless and efficient operation.









Ingeniously designed with an anti-blow out feature, this valve ensures that the stem remains securely in place, preventing any potential damage from unexpected blowouts.
Featuring an advanced seat ring structure with a wave spring and dual-scraper, this system effectively cleans the ball surface while ensuring robust sealing, delivering exceptional performance every time.
The dual-sealing mechanism guarantees superior leakage prevention, ingeniously designed to prevent the flow from contacting the spring, thus ensuring a high leakage class.
Our thoughtful design integrates draining and sweeping functions, effectively preventing the valve from getting jammed and ensuring it remains clean and operational.
Adhering to the rigorous API 607 standards, this valve is equipped with fire-proof and anti-static features, ensuring safety and reliability in critical applications.

Their Exceptional Attributes Include:
Optimized design for seamless disassembly and reassembly.
Engineered for effortless upkeep, our ball valves boast a non-tight fit design that allows for rapid servicing, significantly reducing downtime during routine maintenance.
State-of-the-art sealing technology for unparalleled protection.
The advanced multi-layer sealing of the stem and body provides dual shielding with both O-ring and graphite or PTFE materials, guaranteeing outstanding sealing efficacy.
This pioneering design is fully compliant with the stringent TA-Luft/Shell SPE 77/312 standards.
Prolonged Service Life for Remarkable Cost Efficiency
Our metal seated ball valves are enhanced by sophisticated processing techniques like spray welding, spraying, and fusion welding, ensuring a hardness range of HRC58-73 and a binding force of 80-40MPa. They impressively achieve an on-off cycle durability surpassing 100,000 operations and maintain a leakage class of ANSI VI.
Innovative Modular Design for Superior Flexibility
The modular internal sealing design permits straightforward interchangeability between soft and metal seats, offering unparalleled adaptability and dependability.
A Broad Spectrum of Connection Types for User Ease
Our valves come in diverse connection styles, including flanged (RF, FF, FM, G, RJ), screw-thread, and BW, all aligned with international standards, ensuring smooth and user-centric integration.
Vast Application Expertise Ensures Unmatched Reliability
SNT Valves have gained an enviable reputation through extensive deployment in petroleum, chemical sectors, light industries, pharmaceuticals, paper production, metallurgy, and power stations. We provide optimal, tailored solutions for specific operational conditions, ensuring industry-leading dependability.








SNT Machinery(Qingdao) Co., Ltd stands as a forefront leader in the control valve industry, epitomizing the perfect synergy of production, design, sales, and service. Enviably located in the scenic Qingdao area of Shandong province, our expansive facility stretches over 42,000 square meters, equipped with ultra-modern workshops and cutting-edge production technology. As a high-tech enterprise, we pride ourselves on exclusive intellectual property rights and a strong foundation in global management and production acumen. Our skilled workforce of over 150 includes an impressive 15% dedicated to R&D and 30% who hold advanced degrees. Driven by a commitment to excellence and innovation, we manufacture superior quality valves extensively utilized in the petrochemical, oil, and coal chemical sectors. In 2017, our exceptional sales revenue skyrocketed to nearly 100 billion.
SNT is honored to hold the acclaimed TS special equipment manufacturing certificate alongside ISO 9001 accreditation. We have garnered net qualification certificates from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our impressive portfolio is adorned with numerous national patents covering a wide range of technologies. Our expertise encompasses the design and manufacture of a comprehensive suite of valves conforming to ANSI, API, DIN, BS, and JIS standards. By amalgamating the best features of world-renowned valves with our own innovative R&D, we present a vast selection of valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves.
Our extraordinary product range also features T Three-eccentric Center Butterfly Valves, V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, and Self-operated Control Valves, among others. We offer diverse operational modes such as manual, power-driven, pneumatic, and hydraulic systems. The primary materials used in manufacturing include A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. These products cover specifications ranging from 1/2" to 120" in size, with operational pressures from ANSI 150# to 2500#, and temperature resilience from -196ºC to 1100ºC.
Leveraging state-of-the-art production technology and a rigorous quality assurance framework, SNT valves are indispensable across various industries, including petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our prestigious client list features prominent entities such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Changling branch, and many others.
Dedicated to enhancing customer profitability, we are unwavering in our quest to establish an unparalleled quality standard and a distinguished brand. Our extensive quality assurance and proactive after-sales service systems guarantee that SNT valves forge prosperous and enduring partnerships with all our esteemed clients.