- 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 |

Manufactured with the highest level of precision, the ball and seat of these valves are fortified with advanced hard coatings, featuring either chrome carbide or tungsten carbide. This exceptional enhancement offers unrivaled resistance to erosion and abrasion, thereby significantly boosting the valves' longevity and dependability.
Our SNT High Performance Soft Seated Ball Valves are equipped with a cutting-edge HVOF coating system. Each valve is subjected to precise mate-lapping through proprietary methods to ensure an immaculate 100% seal. The groundbreaking live loading feature guarantees zero emissions, maintaining the ball's contact with the seat to effectively cleanse contaminants. This innovative self-cleaning technology prevents obstruction and damage from particulates, rendering these valves the ideal solution for slurry and abrasive service applications.









Ingenious anti-blowout design ensures the utmost safety by preventing stem ejection, thereby safeguarding against potential damage.
Featuring a sophisticated seat ring structure with a wave spring and dual-scraper, it effectively cleans the ball surface and maintains a perfect seal.
Our dual-sealing innovation guarantees superior leakage prevention by ensuring the flow does not come into contact with the spring.
The strategic design incorporating draining and sweeping functions prevents the valve from jamming, ensuring optimal cleanliness.
We adhere to stringent API 607 standards, offering robust fire-proof and anti-static features for enhanced safety and reliability.

Their Exceptional Features Include:
Innovatively streamlined design ensures effortless disassembly.
Thoughtfully designed for maintenance ease, our ball valves incorporate a non-tight fit design, enabling rapid servicing and reducing downtime during routine maintenance tasks.
State-of-the-art sealing technology ensures maximum security and reliability.
The robust multi-layer sealing of stem and body offers dual protection with a sophisticated blend of O-ring and graphite or PTFE, guaranteeing superior sealing performance.
This cutting-edge design is compliant with the stringent TA-Luft/Shell SPE 77/312 standards.
Prolonged Service Life Ensuring Exceptional Cost-Efficiency
Our metal seated ball valves are subjected to advanced processing techniques, including spray welding, spraying, and fusion welding, achieving a remarkable hardness range of HRC58-73 and a binding force of 80-40MPa. These valves offer an impressive on-off cycle lifespan surpassing 100,000 operations and uphold a leakage class of ANSI VI.
Modular Design for Optimized Convenience
The modular inner sealing design facilitates easy interchangeability between soft and metal seats, ensuring unparalleled flexibility and dependability.
Versatile Connection Types for Enhanced User Convenience
Our valves feature various connection types, including flanged (RF, FF, FM, G, RJ), screw-thread, and BW, all precisely aligned with international standards, ensuring seamless and user-friendly integration.
Comprehensive Application Experience Ensures Unmatched Reliability
SNT Valves have garnered a stellar reputation, enjoying widespread utilization in petroleum, chemical industry, light industry, pharmaceuticals, paper-making, metallurgy, and power stations. We offer optimal solutions meticulously tailored to specific service conditions, guaranteeing market-leading reliability.








SNT Machinery (Qingdao) Co., Ltd is a leading beacon in the manufacturing of control valves, seamlessly integrating production, design, sales, and an array of services under one roof. Nestled in the picturesque locale of Qingdao in the Shandong province, our expansive facility stretches over 42,000m², equipped with cutting-edge workshops and state-of-the-art production machinery. As a high-tech enterprise, we stand distinguished with exclusive intellectual property rights, coupled with a wealth of global management and production insights. Our vibrant team of over 150 consummate professionals includes 15% dedicated to pioneering R&D and 30% equipped with advanced degrees. Our unwavering commitment to excellence and innovation has resulted in the production of superior valves that are indispensable in the petrochemical, oil, and coal chemical sectors. In 2017, our outstanding sales revenue impressively escalated to nearly 100 billion.
SNT proudly possesses the esteemed TS special equipment manufacturing certificate alongside ISO 9001 accreditation. Our net qualification certificates are bolstered by industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM, supplemented by a robust portfolio of national patents covering diverse technologies. Our extensive expertise facilitates the design and manufacture of an all-encompassing range of valves conforming to ANSI, API, DIN, BS, and JIS standards. By ingeniously integrating the most superior features of globally acclaimed valves with our proprietary R&D innovations, we present an extensive selection of valves, encompassing GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves.
Our exceptional product repertoire further 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 offer a diverse spectrum of driving forms including manual, power-driven, pneumatic, and hydraulic operation. Key component materials comprise A216WCB, A217 WC6/WC9, along with A351 CF8/CF8M/CF3/CF3M. Our specifications vary from 1/2" to 120" in size, supporting working pressures from ANSI 150# to 2500#, and operating temperatures spanning from -196ºC to an impressive 1100ºC.
Leveraging advanced production technology and an unyielding quality assurance system, SNT valves play a pivotal role across a multitude of industries, including petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele is graced by the presence of illustrious names such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Changling branch, and numerous others.
Our keen focus on maximizing customer profitability drives us to establish an unparalleled quality standard and a reputable brand. Our comprehensive quality assurance coupled with extensive after-sales service systems ensure that SNT valves foster prosperous partnerships with our esteemed clients.