- 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 |

Expertly crafted with unparalleled precision, the ball and seat of these remarkable valves are fortified with state-of-the-art hard coatings, featuring chrome carbide or tungsten carbide. This advanced reinforcement ensures these components exhibit extraordinary resistance to erosion and abrasion, significantly enhancing their longevity and performance reliability.
Our SNT High Performance Soft Seated Ball Valves are equipped with a pioneering HVOF coating system. Each valve undergoes exacting mate-lapping through proprietary methods, assuring a flawless 100% sealing capability. Moreover, the innovative live loading feature guarantees zero emissions, as the ball maintains steady contact with the seat, effectively sweeping away contaminants. This cutting-edge self-cleaning mechanism is designed to prevent interference and damage from particles, rendering these valves an ideal choice for slurry and abrasive service applications.









Our advanced anti-blowout design effectively prevents the stem from blowing out, ensuring enhanced safety and avoiding potential damage.
The meticulously crafted seat ring structure, featuring a wave spring and dual-scraper, is designed to efficiently clean the ball surface and maintain impeccable sealing.
The robust dual-sealing mechanism guarantees exceptional leakage protection by ensuring the flow does not come into contact with the spring.
Our expertly designed draining and sweeping features are essential in preventing valve jams, ensuring cleanliness and uninterrupted performance.
Compliant with API 607 standards, our valves are equipped with fire-proof and anti-static functionalities for enhanced safety and reliability.

Their Remarkable Features Comprise:
Effortless disassembly thanks to a streamlined design.
Constructed with a maintenance-friendly approach, our ball valves boast a non-tight fit design, ensuring swift servicing that significantly reduces downtime during regular maintenance operations.
Innovative sealing technology ensures ultimate security.
The advanced multi-layer sealing of stem and body provides dual-tier protection, utilizing a combination of O-ring and graphite or PTFE, guaranteeing superior sealing capabilities.
This pioneering design adheres to the stringent TA-Luft/Shell SPE 77/312 standards, ensuring top-tier performance.
Prolonged Service Life for Exceptional Cost-Efficiency
Our metal seated ball valves are subjected to state-of-the-art processing techniques such as spray welding, spraying, and fusion welding. This results in a hardness range of HRC58-73, a binding force of 80-40MPa, and an extraordinary on-off cycle durability exceeding 100,000 operations with a leakage class of ANSI VI, offering long-term value.
Modular Design for Superior Convenience
The innovative modular inner sealing design facilitates easy interchangeability between soft and metal seats, ensuring both flexibility and steadfast reliability.
Diverse Connection Types for Enhanced User Convenience
Our valves offer various connection types, including flanged (RF, FF, FM, G, RJ), screw-thread, and BW, each adhering to international standards to ensure a smooth and user-friendly integration with existing systems.
Vast Application Experience Ensures Unrivaled Reliability
SNT Valves are renowned for their widespread application in sectors like petroleum, chemical, light industry, pharmaceuticals, paper-making, metallurgy, and power stations. We offer optimal solutions tailored to meet specific service conditions, guaranteeing industry-leading reliability.








SNT Machinery (Qingdao) Co., Ltd. stands at the forefront of control valve manufacturing, seamlessly integrating production, design, sales, and service into one cohesive operation. Nestled in the stunning city of Qingdao, Shandong province, our expansive facility covers an impressive 42,000m², housing sophisticated workshops and cutting-edge production machinery. As a pioneering high-tech enterprise with exclusive intellectual property rights, we leverage top-tier global management and production knowledge. Our dynamic team, exceeding 150 professionals, includes a dedicated R&D division comprising 15% of our workforce, alongside 30% of our staff holding advanced degrees. Driven by a pursuit of excellence and innovation, we manufacture superior valves that are indispensable across sectors such as petrochemical, oil, and coal chemical industries, leading to a phenomenal sales revenue reaching nearly 100 billion in 2017.
SNT proudly carries the esteemed TS special equipment manufacturing certificate alongside ISO 9001 accreditation. We've garnered net qualification certificates from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM, with our portfolio enriched by numerous national patents across diverse technologies. Our expertise in designing and producing a comprehensive range of valves is unmatched, adhering rigorously to ANSI, API, DIN, BS, and JIS standards. By synthesizing the best attributes of globally renowned valves with our proprietary R&D insights, we present an expansive selection of valves, including innovative GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves, crafted to perfection.
Our extraordinary product line further encompasses 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 many others. We offer an array of driving forms such as manual, power-driven, pneumatic, and hydraulic operations. Key component materials include A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M, with specifications spanning from 1/2" to 120" in size. These valves are designed to endure working pressures from ANSI 150# to 2500#, and operational temperatures ranging from -196ºC to 1100ºC, meeting the most demanding industry requirements.
Harnessing advanced production technology and a rigorous quality assurance system, SNT valves are quintessential components across multifarious industries such as petrochemical, oil, steel & iron, paper manufacturing, and power generation stations. Our prestigious client roster includes illustrious entities like SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Changling branch, and many more, each trusting in the reliability and performance of our superior products.
Dedicated to amplifying customer profitability, we strive to establish unparalleled quality standards and build a brand synonymous with excellence. Our comprehensive quality assurance and after-sales service systems guarantee that SNT valves forge enduring and prosperous partnerships with all our esteemed clients, ensuring satisfaction and mutual growth.