28-Jul-2025

In demanding industrial applications where high temperatures, abrasive media, or extreme pressures are involved, metal seated ball valves are the go-to solution. Unlike soft-seated valves, which use PTFE or other polymer-based seals, metal seated valves use precision-engineered metal-to-metal contact to ensure tight shutoff under harsh conditions. 🔧 What is a Metal Seated Ball Valve? A metal seated ball valve uses a ball and seats made from hardened metal materials, such as stainless steel, Stellite, Tungsten Carbide, or Chromium Carbide coatings. The ball rotates within the valve body to control flow, just like standard ball valves, but the metal contact surfaces can withstand far more severe conditions. ✅ When to Use Metal Seated Ball Valves Metal seated ball valves are typically chosen for: 🌡️ High-temperature environments (up to 540°C or more) 🧪 Abrasive or slurry applications 🔥 Fire-safe systems ⚙️ Steam, hydrocarbons, refinery, or power generation pipelines 🧼 Applications requiring frequent cycle life with minimal maintenance ⚖️ Metal Seated vs. Soft Seated Ball Valves Understanding the difference between metal seated and soft seated ball valves is critical when selecting the right valve for your application. Feature Soft Seated Ball Valve Metal Seated Ball Valve Sealing Material PTFE, TFM, PEEK, Delrin (Acetal) Hardened Metal (e.g. Stellite, Tungsten Carbide) Temperature Range PTFE: ~140°C; PEEK: ~260°C; Delrin: ~80°C Up to 500°C (or higher with special alloys) Media Suitability Clean, non-abrasive fluids and gases Abrasive, corrosive, or high-solid media Seal Tightness None Visible Leakage Class IV–V Wear Resistance Good with PEEK/Delrin; lower with PTFE Excellent (ideal for erosion and slurry)       📝 Summary: Soft seated valves (PTFE, PEEK, Delrin) are great for clean media, moderate temperature, and tight shutoff needs. Metal seated valves are ideal for high-temperature, high-abrasion, and high-cycle environments where durability is critical. 💡 Key Benefits of Metal Seated Ball Valves Feature Benefit 🔥 High Temperature Resistance Suitable for steam, thermal oil, and combustion systems 🛠️ Durable Against Abrasives Handles sand, catalyst particles, slurries, etc. 🔄 Extended Cycle Life Ideal for high-frequency on/off operations 🔒 Reliable Shutoff Metal-to-metal contact maintains seal even under pressure and thermal cycling 🔧 Repairable/Serviceable Design Many metal seated valves allow for lapping or replacement of internal components 📏 How to Select the Right Metal Seated Ball Valve When selecting a valve, consider: Temperature & Pressure Ratings Media Composition (e.g., solids, corrosives) Actuation Type – Manual, Pneumatic, or Electric Valve Size & Connection Type – Flanged, Threaded, or Welded Industry Standards – API 6D, ANSI, ISO, Fire-safe certifications 🏭 Industries That Rely on Metal Seated Valves Petrochemical plants Power generation Pulp and paper industry Mining & mineral processing Steel and metallurgy Oil & Gas 🚀 Why Choose Anson Flow Metal Seated Ball Valves? At Anson Flow, we provide OEM and standard series metal seated ball valves tailored to demanding applications. We offer: Precision-machined hard-coated balls and seats Fire-safe, anti-static, ISO pad-ready Private-label options Specialty materials available on request: alloy steel, Hastelloy®, Duplex and Super Duplex stainless, nickel alloys, Inconel®, and titanium。 Actuated sets with pneumatic or electric control 👉 Need a sample or quote? Contact us to discuss your application. 📞 Let’s Talk Whether you’re sourcing for a refinery, power plant, or abrasive slurry system, metal seated ball valves offer the durability and reliability your project demands. 📧 Email us at: sales@ansonflow.com🌐 Visit: https://www.ansonflow.com/

18-Jul-2025

In the world of industrial valves—whether used in oil & gas, chemical, power generation, or water treatment—quality assurance is non-negotiable. One key international standard ensuring valve reliability is API 598. If you’re involved in specifying, purchasing, or manufacturing valves, understanding API 598 is essential. 📘 What Is API 598? API 598 is the American Petroleum Institute’s standard for valve inspection and testing, covering leakage, pressure integrity, and shell testing for a variety of valve types including: Gate valves Globe valves Check valves Ball valves (where applicable) It outlines procedures and acceptance criteria to confirm that valves meet minimum safety and reliability standards before being shipped to customers. 🧪 What Tests Are Required Under API 598? API 598 specifies two major types of tests: 1. Shell Test (Hydrostatic) Purpose: Verifies the strength and structural integrity of the valve body and bonnet. How: Water (or compatible liquid) is used to apply pressure to the valve body with the valve in partially open position. Pressure: Typically 1.5x the rated pressure. 2. Seat Test (Leakage Test) Purpose: Ensures the valve properly seals when closed. How: Fluid is applied to either side of the closed valve to test for seat leakage. Pressure: Typically 1.1x the rated pressure. 3. Backseat Test (only for valves with a backseat) Purpose: Tests sealing capability between stem and bonnet when backseat is engaged. How: Internal pressure is applied with the stem in backseated position. Pressure: Typically 1.1x the rated pressure. 📌 Valve Types and Applicability Valve Type Shell Test Seat Test Backseat Test Gate Valve ✅ ✅ ✅ Globe Valve ✅ ✅ ✅ Check Valve ✅ ✅ ❌ Ball Valve ✅ ✅ ❌   📌 Duration of Required Test Pressure Valve Size (NPS) Minimum Test Duration(Seconds) Shell Backseat Closure Check Valves(API Std 594) Other Valves All Valves with Backseat Feature Check Valves(API Std 594) Other Valves ≤ 2 60 15 15 60 15 2 1/2 - 6 60 60 60 60 60 8 - 12 60 120 60 60 120 ≥ 14 120 300 60 120 300   Why API 598 Compliance Matters ✅ Safety: Prevents catastrophic failures in high-pressure systems.✅ Quality Assurance: Ensures leak-tight sealing performance.✅ Procurement Confidence: Verifiable standard helps specifiers and buyers make informed decisions.✅ Interoperability: Accepted globally, simplifies cross-border sourcing.   🏭 At Anson Flow, API 598 Comes Standard At Anson Flow, we follow strict API 598 protocols across our OEM and private-label valve lines. Whether you're sourcing: 1-PC / 2-PC / 3-PC ball valves Gate, globe, or check valves Actuated valve packages 📩 Need Support? If you're evaluating valve suppliers or want guidance on API 598-compliant components, contact us or email sales@ansonflow.com — our technical team is ready to help.

08-Jul-2025

High purity valves are specialized flow control components engineered to meet rigorous sanitary and operational standards. These valves prevent contamination, enable clean-in-place (CIP) and steam-in-place (SIP) processes, and support long-term reliability in environments with stringent hygiene requirements.   Why Are High Purity Valves Essential? ·         Contamination Prevention: High purity valves help block bacteria, particles, and residues from entering fluid systems. ·         Support for CIP/SIP: Designed with smooth, polished internals and drainable geometries to handle automated cleaning. ·         Process Reliability: Maintain sealing integrity under variable pressure and temperature conditions. Where Are They Used? ·         Pharmaceuticals & Biotech: Sterile drug manufacturing and fluid handling. ·         Semiconductors: For the transport of ultrapure water (UPW), process cooling water (PCW), and critical chemical delivery in contamination-sensitive environments. ·         Food & Beverage: Safe processing of milk, beer, baby food, etc. ·         Cosmetics: Protection of sensitive formulas from contamination. Why Anson Flow? With over 20 years of OEM/ODM manufacturing experience, Anson Flow offers a competitive edge in high purity valve design and quality. 🔧 Premium Design & Material Standards ·         Oil-free 316L stainless steel body ·         Polished internal surfaces (RA per customers requirement) ·         Blow-out proof stem, purge ports, and live-loaded double packing ·         Available with FDA-compliant seats and ISO 5211 mounting ✅ Strict Quality & Documentation ·         100% functional testing ·         Optional helium leak testing ·         EN 10204 3.1 material certificates 🌐 Global Service, Local Support ·         Trusted by partners in semiconductors, chemicals, cleanrooms, and more ·         Scalable supply with fast delivery and technical assistance   Popular Products ·         AF-60: 3-piece sanitary ball valve with tube-bore end connection, size range from Tube size : 1/4”- 6” O.D, JIS/NPS Pipe size : 1/2” - 12” ,1000 PSI ·         AF-61: 3-piece tri-clamp sanitary ball valve, size range from1/4”- 4”, 1000 PSI. ·         AF-62: Sanitary butterfly valve size range from 1”- 6”, 140 PSI ·         Instrumentation Valves: Compact valves and fittings size range from 1”/4- 1”, up to 6000 PSI Summary Choosing the right high purity valve can make or break your fluid system’s performance and compliance. Anson Flow brings together advanced manufacturing, precision engineering, and comprehensive testing to deliver high-purity solutions you can trust. Visit our product page: https://www.ansonflow.com/product-category/sanitary-valve Download the full brochure: https://www.ansonflow.com/images/Purity.pdf

27-Jun-2025

In industrial valve systems, butterfly valves are widely appreciated for their compact design, cost-effectiveness, and quick shutoff capability. But not all butterfly valves are created equal. At Anson Flow, we offer a full range of concentric, double eccentric, and triple eccentric butterfly valves  offered in Wafer, Lug, and Flanged types to accommodate different pipeline installation needs. —each engineered to meet the specific demands of water, chemical, oil & gas, and other industrial applications.   🔍 What Are the Differences Between Concentric and Eccentric Butterfly Valves? 1 1️⃣ Concentric Butterfly Valve Design Features:The stem and disc share the same centerline. Simple structure with reliable sealing performance. Seat Materials:Suitable for water treatment, HVAC, food processing, and similar applications. Typical Applications:Low-pressure, ambient temperature systems such as municipal water supply, environmental engineering, and ventilation systems.   2️⃣ Double Eccentric Butterfly Valve Design Features:The stem is offset in two directions. When opening, the disc quickly disengages from the seat, minimizing friction and wear. Performance Advantages:Ideal for medium-pressure applications. Offers long service life, lower torque requirement, and stable flow control. Application Fields:Industrial circulation water, chemical fluids, fire protection systems, and other environments requiring enhanced sealing and pressure resistance.   3️⃣ Triple Eccentric Butterfly Valve Design Features:Adds a third offset with a conical sealing surface, achieving a metal-to-metal seal. Performance Advantages:Withstands high temperature, high pressure, fire, and corrosion. Achieves zero leakage performance. Typical Industries:Petrochemical, refining, power plant steam systems, and seawater desalination applications.   🏆 Why Choose Butterfly Valves from Anson Flow? ✅ Wide range: From concentric to triple offset valves ✅ Material options: CF8M, WCB, duplex stainless, and lined versions ✅ Flexible actuation: Manual, pneumatic, or electric ✅ Multiple seat materials available – Options include EPDM, Viton, NBR, PTFE, and metal-seated designs to suit a wide range of media and service conditions (water, chemicals, steam, cryogenics, etc.) 🔗 Explore Our Product Lineup Ready to choose the right butterfly valve for your next project?🔗 View Anson Flow’s Butterfly Valve Series   📞 Contact Us Whether you're upgrading an existing system or sourcing for a new project, our team is here to help. 📧 Email: sales@ansonflow.com🌐 Website: www.ansonflow.com

19-Jun-2025

A Practical Guide for High-Pressure and Large-Bore Applications In industries such as oil & gas, petrochemicals, LNG, and power generation, selecting the right valve is critical to system performance and safety. When dealing with high pressures, large pipe diameters, or demanding service conditions, the trunnion-mounted ball valve is a preferred choice for many engineers and plant operators.   🔧 Trunnion vs. Floating Ball Valves – What’s the Difference? Ball valves typically fall into two categories: floating and trunnion-mounted. •In a floating ball valve, the ball is held in place by the compression of the seats. It moves slightly to maintain a seal—best suited for low- to medium-pressure systems. •In a trunnion-mounted ball valve, the ball is fixed in position by support shafts (trunnions) on both the top and bottom. The seats move toward the ball to create a seal. This structural difference gives trunnion valves a few key advantages.   ✅ Why Choose a Trunnion-Mounted Ball Valve? Benefit Explanation Low operating torque Reduced friction allows smoother actuation and smaller actuators. Longer seat life The fixed ball minimizes wear, especially under high pressure. Better performance in large sizes Ideal for high-DN and high-pressure systems. Bidirectional sealing Some designs offer effective sealing from both flow directions.   🌍 Common Applications Because of their robust design, trunnion ball valves are widely used in: •Oil and gas transmission pipelines •LNG terminals and cryogenic service •Petrochemical plant process lines •High-pressure steam or condensate systems •Isolation valves in safety-critical operations They are often specified when tight shutoff, long service life, and system reliability are essential.   🛠 Configurations and Custom Options Trunnion-mounted ball valves come in many configurations. Key variables include: •Materials: carbon steel, stainless steel, duplex, Inconel, etc. •Seat design: soft-seated, metal-seated, double block & bleed •End connections: flanged, welded •Actuation: manual, pneumatic, or electric •Applicable Standard: May include API 6D, ISO 5211, API 607 (firesafe), and others Suppliers may also offer custom engineering to meet specific standards or performance needs.   🔍 What to Consider When Sourcing If you're planning to specify or source a trunnion ball valve, consider the following: •Operating pressure and temperature •Media type (corrosive, toxic, flammable, etc.) •Flow direction and shutoff requirements •Space constraints for actuator or access •Certification or end-user specifications Working with a knowledgeable supplier ensures that the valve you choose is optimized for your system—and not just “fitted to size.”   💬 Need Help Selecting the Right Trunnion Valve? At Anson Flow, we help clients worldwide with valve selection, customization, and OEM support. Whether you need a standard design or tailored engineering, we’re here to assist. 👉 Contact us to learn more about trunnion-mounted ball valve solutions for your project.

13-Jun-2025

In today’s industrial landscape, the reliability and efficiency of equipment are crucial, and the quality of key components plays a vital role in overall system performance. With nearly 20 years of expertise, Anson Flow Corp. is dedicated to delivering high-quality OEM customized technologies and component solutions, helping global customers create precision industrial valves and parts designed specifically for their unique requirements. What Is OEM Technology? OEM (Original Equipment Manufacturer) technology refers to designing and manufacturing components or products according to customer specifications, ensuring a perfect fit within their systems and operational environments. Anson Flow’s OEM capabilities cover material selection, structural design, manufacturing processes, and strict quality control to guarantee each component meets the highest standards. Core Advantages of Anson Flow’s OEM Technology 1. Customized Design to Meet Diverse Needs Whether you operate in oil & gas, semiconductor, LNG, or chemical industries, Anson Flow tailors components to your drawings,  system specifications and environmental conditions, maximizing overall system performance. 2. Wide Range of Materials for Harsh Environments We offer a wide range of material options, including corrosion-resistant stainless steel such as SS304 and SS316, as well as special alloys. These materials are selected to ensure reliable performance in extreme temperatures and highly corrosive environments. Material certification in accordance with EN 10204 3.1 is also available upon request. 3. Fast Delivery to Minimize Downtime Understanding the cost of equipment downtime, we provide efficient production and logistics services to shorten lead times and get your operations back on track swiftly. Common OEM Component Applications 🔩 1. Machining of Body and Cap We provide high-precision machining for valve bodies and caps, tailored to meet each customer’s specifications. Whether it's from castings or solid bars, we ensure dimensional accuracy, tight tolerances, and high-quality surface finishes—critical for leak-proof and durable components. 🔧 2. Stem Manufacturing Stems play a vital role in valve control systems. We manufacture stainless steel and alloy stems with a focus on straightness, surface hardness, and corrosion resistance. Heat treatment and anti-corrosion options are available to meet demands in high-pressure, high-temperature, or chemically aggressive environments. ⚙️ 3. Precision Machined Components Our advanced CNC machining capabilities allow us to produce parts with intricate geometries and tight tolerances. These components are widely used in industries such as oil & gas, chemical, LNG, and semiconductor. 📝 4. Custom Stainless Steel Parts Evaluation Have a drawing? We can help. Simply send us your technical drawings, and we’ll provide a full evaluation including material selection, manufacturability analysis, machining recommendations, and quotation. Whether it’s a prototype or a small batch, we offer flexible and cost-effective solutions. Why Choose Anson Flow’s OEM Technology? Anson Flow is more than just a valve manufacturer — we are your trusted technology partner. Combining engineering design with manufacturing expertise, we offer comprehensive services from design consultation and material recommendations to production validation. No matter how complex your requirements, we deliver tailor-made solutions to help your equipment perform at its best.   Contact Us to Learn More About Our Customized OEM Technology! Ready to enhance your industrial equipment’s performance with Anson Flow’s OEM solutions? Contact our expert team today for personalized planning and technical support.