- 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 |

Crafted with unmatched precision, the ball and seat of these valves are fortified with advanced hard coatings of either chrome carbide or tungsten carbide. This supreme reinforcement provides exceptional resistance to both erosion and abrasion, significantly enhancing the durability and reliability of the valves over time. Experience longevity and robust performance with our expertly designed solutions.
Our SNT High Performance Soft Seated Ball Valves feature a groundbreaking HVOF coating system, setting new standards in valve technology. Every valve is subjected to meticulous mate-lapping using proprietary techniques, ensuring an impeccable 100% sealing performance. The innovative live loading feature guarantees zero emissions, maintaining the ball in constant contact with the seat to effectively remove contaminants. This revolutionary self-cleaning mechanism prevents interference and damage from particles, making these valves the ultimate choice for handling slurry and abrasive service applications with confidence and efficiency.









Our innovative anti-blowout design effectively prevents any stem blowout, safeguarding the valve from potential damage.
Featuring a seat ring structure with wave spring and dual-scraper, this design efficiently cleans the ball surface, ensuring impeccable sealing performance.
The dual-sealing system is designed to uphold leakage standards by preventing flow contact with the spring, thereby ensuring top-notch leakage class protection.
Our advanced draining and sweeping design effectively prevents valve jamming by thoroughly cleaning the mechanism.
Compliant with API 607 standards, our ball valves offer remarkable fire-proof and anti-static capabilities.

Their Exceptional Features Include:
Simplified design for easy and quick disassembly.
With maintenance simplicity as a core focus, our ball valves boast a non-tight fit design that enables swift and efficient servicing, significantly reducing downtime and enhancing productivity during routine maintenance.
Innovative sealing solutions for unparalleled safety and reliability.
The sophisticated multi-layer sealing system of the stem and body offers dual protection with an O-ring and graphite or PTFE combination, ensuring superior sealing capabilities and peace of mind.
This cutting-edge design adheres to the stringent TA-Luft/Shell SPE 77/312 standards.
Prolonged Service Life for Enhanced Cost-Effectiveness
Our metal-seated ball valves undergo state-of-the-art processing techniques, including spray welding, spraying, and fusion welding, guaranteeing a hardness range of HRC58-73 and an adhesion force of 80-40MPa. They boast an impressive operational cycle exceeding 100,000 on-off actions and meet leakage standards of ANSI VI.
Modular Design for Maximum Flexibility
The modular inner sealing configuration allows for seamless interchangeability between soft and metal seats, ensuring adaptability and robust reliability.
Varied Connection Options for User-Friendly Integration
Our valves offer a diverse range of connection types, including flanged (RF, FF, FM, G, RJ), screw-thread, and BW. These options adhere to international standards, guaranteeing smooth, intuitive installation and integration.
Proven Application Expertise Ensures Dependability
SNT Valves have established a remarkable reputation through extensive utilization in sectors like petroleum, chemical industry, light industry, pharmaceuticals, paper-making, metallurgy, and power stations. We provide premier solutions tailored to distinct service conditions, ensuring industry-leading dependability and customer satisfaction.








SNT Machinery (Qingdao) Co., Ltd stands as a beacon of excellence in the realm of control valve manufacturing. Nestled in the scenic beauty of Qingdao, Shandong province, our expansive 42,000m² facility is a testament to cutting-edge innovation, featuring the latest in production technology and ultramodern workshops. As a high-tech enterprise, we pride ourselves on possessing unique intellectual property rights, fortified by an international standard of management and production acumen. Our dynamic team of over 150 skilled professionals includes a dedicated 15% focused on research and development, and an impressive 30% holding advanced degrees. Our unwavering commitment to quality and pioneering innovation positions us as leaders in crafting superior valves for the petrochemical, oil, and coal chemical sectors. In 2017, our exceptional sales revenue approached an astounding 100 billion.
SNT Machinery is distinguished by its prestigious TS special equipment manufacturing certification and ISO 9001 accreditation. Our unwavering adherence to quality has garnered us net qualification certificates from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our innovative portfolio is enriched with numerous national patents, reflecting our technological prowess. Our valve expertise encompasses a comprehensive range adhering to ANSI, API, DIN, BS, and JIS standards. By integrating the best global valve features with our proprietary research and development, we offer a diverse suite of valves like GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves, setting new benchmarks in the industry.
Our remarkable array of products extends to include 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 provide an impressive range of operation modes, including manual, power-driven, pneumatic, and hydraulic systems. Our component materials, such as A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M, ensure durability and performance. With specifications ranging from 1/2" to 120" and pressure capabilities from ANSI 150# to 2500#, our valves are engineered to function at temperatures from -196ºC to 1100ºC, meeting diverse industrial needs with precision and reliability.
Harnessing advanced production techniques and a robust quality assurance framework, SNT valves are pivotal to multiple industries, including petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our prestigious client portfolio features industry leaders such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and SINOPEC Changling branch, who trust us for our unparalleled quality and reliability.
At the heart of our mission is the commitment to enhancing customer profitability through exceptional quality standards and brand reputation. Our comprehensive quality assurance and diligent after-sales service systems ensure that SNT valves foster lucrative partnerships with our esteemed clientele, reinforcing our status as a trusted leader in the industry.