Plug valve Manufacturer

Plug Valve

China Plug Valves Manufacturer

Our expertise in Plug Valve manufacturing has made us a successful Chinese manufacturer.Industrial plug valve is a type of valve that uses a cylindrical or tapered plug to control the flow of fluid through a pipe. The plug has a hole or passage that aligns with the flow when the valve is open, and blocks the flow when turned to the closed position. It is commonly used for quick shutoff in pipelines.
Valve Types: Lubricated, Non – lubricated, Eccentric;
Design Standards: API 599, API 6D, MSS SP – 72;
Size Range: 1/4 – inch to 48 – inch;
Pressure Range: A few psi to 6000 + psi;
End Connections: Flanged, Threaded, Socket – weld, Butt – weld;
Disc Types: Solid, Venturi – style, Lined;
Bonnet Types: Bolted, Pressure – sealed, Welded.

Inquire
Inverted Hard Seal Plug Valve Pressure Balance Manual Plug Valve

ASME Pressure Balanced Inverted Hard Seal Manual Plug Valve for General Industrial Water and Fluid Control Applications

ASME Pressure Balanced Inverted Hard Seal Manual Plug Valve for General Industrial Water and Fluid Control Applications TIANYU American standard pressure balanced inverted hard seal manual plug valve, sized 1/4in-2-1/2in, excels in low/medium/high-pressure systems. Its inverted design ensures lightweight operation, hard seal guarantees leak resistance, and it handles water and general fluids across temperatures.it suits water management and industrial pipelines. Customization (sizes, materials) is available to meet specific needs.
Read More
Sealed Reliable Pressure Balanced Inverted Lubricated Oil Sealed Plug Valve for Petroleum Chemical Pharmaceutical Industries

Sealed Reliable Pressure Balanced Inverted Lubricated Oil Sealed Plug Valve for Petroleum Chemical Pharmaceutical Industries

TIANYU back pressure balanced lubricated plug valves integrate inverted pressure balancing and forced lubrication technologies to deliver reliable fluid control for Class 150~Class 900 high-pressure systems. Covering DN25~DN350, they suit water, oil, gas, acid-base solutions, and excel in rigorous applications across petrochemical, pharmaceutical, and power industries. Through precision casting, strict testing, and life cycle cost optimization, TIANYU provides global industrial clients with high-performance, low-maintenance valve solutions.
Read More
API High Quality Inverted Pressure Balanced Lubricated Plug Valve

API High Quality Inverted Pressure Balanced Lubricated Plug Valve

TIANYU back pressure balanced lubricated plug valves (DN15-DN200, PN16-PN100) meet API 599/6D standards. The back pressure balance reduces torque, while forced lubrication ensures zero leakage. Suited for water, oil, gas, etc., they are widely used in oil & gas, chemical, and power industries, offering high-pressure sealing and long-life solutions.
Read More
API ASME Fland Ends Sleeve Type Soft Sealing Bronze Plug Valves

API ASME Fland Ends Sleeve Type Soft Sealing Bronze Plug Valves

TIANYU flanged sleeve-type soft-seal bronze plug valves (DN15-DN100, PN16-PN50) in aluminum/silicon bronze, -20℃~150℃. PTFE soft seal ensures zero leakage, bidirectional pressure resistance, and corrosion resistance. Suited for water/steam/gas, WRAS/FDA certified—ideal for food, pharma, and marine applications.
Read More
PLUG VALVES Manufacturer

TianYu Top Plug Valve Manufacturer

Tianyu Plug Valves, made to APl / CE standards.Strong sealing, high pressure & particle resistance,Multi-port customizable for global harsh conditions.Our expertise in Plug Valve manufacturing has made us a successful Chinese manufacturer.

TIANYU Plug Valves feature a 90° rotating plug for rapid on/off control, optimized for high-pressure, high-viscosity, particle-laden media, and extreme temperatures

PLUG VALVES INDUSTRIAL APPLICATION

I. Product Features: Full-Type Coverage and Sealing Innovation

TIANYU Plug Valves feature a 90° rotating plug for rapid on/off control, optimized for high-pressure, high-viscosity, particle-laden media, and extreme temperatures:
(A) Structural Design and Functional Classification
  1. Straight Through Plug Valves
    • Reduced/Full Bore: Reduced bore (Cv≤0.6 for DN50) saves 30% space for clean media; full bore (DN80+) prevents particle buildup, ideal for slurries (≤200μm) and asphalt, reducing blockages by 80% in copper mine applications.
  2. Tee/Cross Plug Valves
    • L-Type/T-Type Diverters: L-type (90°) switches two paths with ≤0.1cc/min leakage (API 598 Class IV); T-type (120°) enables three-way flow with ±0.5° positioning accuracy for petrochemical material switching.
  3. Pressure Balance Plug Valves
    • Dual Packing Design: Upper PTFE packing for dust prevention, lower graphite packing for pressure resistance, reducing operating torque by 50% (≤80N for DN100), suitable for high-pressure natural gas quick shut-off.
(B) Sealing Technology and Material System
Sealing Type Structure Feature Temp Range Typical Media Leakage Class
Packing Seal Braided graphite packing -50℃~650℃ Steam, thermal oil API 598 Class IV
Grease Seal High-pressure grease injection -29℃~300℃ Crude oil, LPG Bubble-tight (Class VI)
Metal Hard Seal Stellite®6 overlay on plug -196℃~540℃ LNG, molten salt ≤0.1cc/min
Soft Seal PTFE/PEEK coated plug -100℃~200℃ Acid/alkali, food syrup Zero leakage (Class VI)
(C) Material Compatibility
  • Body Materials: Forged steel (A105/F316), cast steel (WCB), duplex steel (2205), Hastelloy (C-276), suitable for Class 150~2500 (PN16~420);
  • Temperature Range: Cryogenic (-196℃), high-temperature (650℃), and standard (-29℃~427℃).

II. Manufacturing Processes: Precision Machining and Quality Control

TIANYU leverages intelligent production for end-to-end traceability:
(A) Key Manufacturing Steps
  1. Die Forging and Forming
    • Hot Forging: 1600-ton presses refine grains to ASTM No.10+ (forging ratio ≥4:1), enhancing impact resistance by 40% for seismic zones.
    • Powder Metallurgy: MIM technology for stainless steel plugs (±0.01mm accuracy, Ra≤0.8μm), ideal for DN15~DN50 micro valves.
  2. Precision Machining and Treatment
    • 5-Axis CNC: IT6-grade precision for plug sealing surfaces, polished to Ra≤0.2μm, ensuring torque variation ≤5% (DN200 test).
    • Surface Hardening: Ion nitriding for carbide plugs (0.3mm depth, HV1000+), tripling wear resistance for sand-laden crude (≤5% solids).
  3. Sealing System Integration
    • Grease Injection System: Class 3000 grease valves 对接 plug cavities, tested to 1.5x pressure for emergency sealing reliability.
(B) Full-Dimension Testing
  • Hydrostatic Test: 1.5x pressure (water) for 30 minutes, ≤0.3% drop (e.g., 13.5MPa for Class 900);
  • Gas Seal Test: 1.1x pressure (helium), leakage ≤1×10⁻⁹Pa·m³/s (better than API 6D Class VI);
  • Life Test: 100,000 cycles with 95% sealing retention, exceeding industry standards (50,000 cycles).

III. Product Applications: Solutions for Global Industries

TIANYU Plug Valves excel in critical applications:
(A) Oil & Gas
  • Shale Gas: Sulfur-resistant valves (NACE MR0175) operate 8+ years in 1000ppm H₂S, used in wellhead chokes;
  • LNG Terminals: Cryogenic valves (F316L plug) with ≤15N·m torque at -162℃, API 6A PR2-certified for loading arm shut-off.
(B) Chemical & Petrochemical
  • Polymer Reactors: Tee plug valves (PTFE seal) control 99.9% pure ethylene with ≤5×10⁻¹⁰Pa·m³/s leakage;
  • Chlor-Alkali Plants: Hastelloy C-276 plugs last 10 years in wet chlorine, 5x longer than standard SS.
(C) Power & Energy
  • Supercritical Power: High-temp valves (F91 body) achieve 30s emergency shut-off at 540℃/25MPa (ASME BPVC Section III);
  • PV Silicon Production: Micro valves (DN15) control trichlorosilane with ≤1×10⁻¹²Pa·m³/s leakage for semiconductor purity.
(D) Municipal & Environmental
  • Wastewater Treatment: Wear-resistant valves (tungsten carbide coating) extend maintenance cycles from 3 months to 1 year in sand-laden 污水，cutting costs by 40%;
  • District Heating: Thermostatic plug valves (shape memory alloy spring) maintain ±2℃ accuracy, saving 15% energy.

IV. Advantages: TIANYU’s Global Competitiveness

  1. Rapid Operation and Low Torque
    • 90° quick switch in seconds, 30% lower operating force (≤120N for DN150), ideal for emergency scenarios;
    • Pressure balance design reduces actuator size by 25% for DN300, saving equipment costs.
  2. Customization for Special Conditions
    • Special Designs: Fire-safe (API 607), anti-static (ISO 10497), and anti-frost solutions for arctic/desert environments;
    • Industry-Specific: FDA-compliant mirror-polished plugs (Ra≤0.2μm) for food/pharma; seismic-resistant valves (IEEE 344) for nuclear applications.
  3. Global Certifications and Support
    • Compliance: 20+ certifications including API 6D, CE-PED, GOST-R for global markets;
    • Service Network: 7 regional centers with 24/7 support, 48-hour emergency parts delivery, reducing downtime by 70%.
  4. Lifecycle Value and Sustainability
    • Easy Maintenance: Modular design allows 30-minute plug/packing replacement, 60% cost savings vs. full replacement;
    • Environmental Commitment: 95% recyclable components, 35% lower forging energy, 200kg CO₂e reduction per DN1000 valve (EU CE PED compliant).

Related News

TIANYU-VALVE-logo

Top 10 Valve Manufacturers In 2025

The industrial valve market continues to expand, driven by advancements in technology and increasing demand across various sectors. In 2021, the market size reached $65 billion and is projected to grow to $110.5 billion by 2031, with a CAGR of 5.3%. By 2029, it is expected to hit $121.67 billion, fueled by infrastructure projects and […]

Check valve application scenarios

Which Method Will Prevent Backflow

Preventing backflow is crucial across various industries. There are multiple methods like check valves, pressure - vacuum breakers, etc. When choosing, factors such as application needs, cost, and maintenance should be considered. As a top valve supplier, we offer diverse high - quality backflow prevention products. Our expert team provides professional advice. Contact us now to explore our products and find the best way to prevent backflow for your specific situation.

The Outstanding Application and Performance Optimization of Plug Valves in Fluid Control

Introduction In the intricate realm of fluid control systems, valves serve as indispensable control elements, tasked with regulating, shutting off, and diverting fluids. Among them, the plug valve stands out with its unique design, exceptional sealing capabilities, and convenient operation, finding wide applications across industries such as oil, chemicals, natural gas, and water treatment. Working […]

Professional China Valve Manufacturers and Supplier

Excelling in Harsh Conditions, Leading the Industry with High-Performance Valves for Stable Operation

TIANYU Plug Valves combine precise rotating sealing with forged steel durability, offering robust fluid control for the world’s toughest industrial challenges. From high-pressure gas fields to high-purity semiconductor processes, we empower clients with safety, efficiency, and sustainability—backed by global expertise and uncompromising quality.

Plug Valve Parts

Sealing Element

The sealing element is vital for valves, preventing media leakage when closed. Made of durable, corrosion-resistant materials, it withstands pressure, temperature, and corrosion. Its repeated friction during operation makes material choice and manufacturing quality crucial for sealing performance and valve lifespan, regardless of valve type.

Valve Stem

The valve stem links the closure element to the operating mechanism, controlling its movement to regulate media flow. It requires strength and rigidity to withstand forces while maintaining stability. Its design and quality directly impact the valve’s flexibility and durability.

Valve Body

The valve body serves as the core structure of the valve, forming the main framework that provides installation and support for other components. It houses the internal channels for media flow. Whether it’s a ball valve, butterfly valve, or gate valve, the valve body is the most essential part, directly influencing the valve’s performance, flow characteristics, and service life.

Valve Cover

The valve cover is the enclosed part of the valve, typically connected to the valve body to form a sealed space within the valve. Its main function is to protect the internal components of the valve from external impurities and ensure complete sealing when the valve is closed, preventing media leakage. The design and manufacturing quality of the valve cover significantly impact the overall performance of the valve.

Why Choose Us

Ensure Safety

Our products and services comply with international standards and specifications to make sure that we only produce the best and highest quality products and services to our clients.

Customization Service

We offer tailor-made industrial valves to ensure that our product fits your application standards and demand. TIANYU is ISO, API, MSS, and ASME compliant to guarantee you the highest product quality.

Fast Shipping

As a business partner, TIANYU makes sure that we commit to our clients’ requested deadline because we very much understand the importance of adhering to the timeline required.

After-Sales Service

TIANYU’s service does not end once our industrial ball valves are being delivered. Also, we offer warranties and provide customer service to our clients as part of our quality service.

About Us
valve test apparatus

Founded in 2009, Wenzhou Tianyu Valve Technology Co., Ltd. is a professional valve enterprise integrating design, development, production, and sales services, located in the hometown of Chinese valves – Oubei Town, Wenzhou.

Quick Links
Products
Facebook Linkedin-in
Contact Us
Copyright@2025 Tianyu Valve CO.,LTD. Sitemap All rights reserved.
CHOOSE YOUR LANGUAGE
TYPE TO SEARCH
© TIANYU VALVE

Get a free quote