China's Trusted Industrial Valve Manufacturer & Supplier

With over 30 years of proven experience, STV Valve delivers high-performance, multi-standard valves for global industrial applications. ISO, CE, and API certified. Competitive pricing, fast delivery, and full customization available.

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30+

Years of Industry Experience

100+

Countries Served

ISO, CE, API

Certified Manufacturing

Who We Are

STV Valve Technology Group Co., Ltd is a leading manufacturer and supplier of industrial valves based in Wenzhou, Zhejiang, China. Since our inception over three decades ago, we have specialized in designing, producing, and delivering high-quality flow control solutions for a wide range of industries including oil & gas, chemical processing, power generation, water treatment, and more.

We are not just manufacturers — we offer complete valve solutions, from standard products to fully customized designs, ensuring reliability, safety, and performance in every application.

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Our Products

We offer a comprehensive range of industrial valves designed for durability, precision, and optimal performance across diverse applications.

Ball Valves

A quarter-turn shut-off valve that controls flow via a rotating ball with a bore. Known for long service life, reliable sealing, and minimal pressure drop. Ideal for on/off control in liquid and gas systems.

• Full or reduced bore options
• Floating or trunnion-mounted
• API 6D, ISO 5211 compliant
• Available with actuators

Gate Valves

Also known as sluice valves, these open by lifting a gate out of the fluid path. Ideal for full-flow applications with minimal restriction. Commonly used in pipelines requiring straight-line flow.

• Wedge or parallel seat design
• Rising or non-rising stem
• API 600, BS 1414 compliant
• Cast steel & stainless steel options

Globe Valves

Designed for precise flow regulation in pipelines. Features a movable plug and stationary seat within a spherical body. Excellent for throttling and frequent operation.

• T-type, angle-type, or Y-pattern
• Screwed or welded connections
• Manual or actuated operation
• ANSI, DIN, JIS standards

Check Valves

Also known as non-return or one-way valves. Prevent backflow by allowing media to flow in only one direction using pressure differential.

• Swing, lift, or wafer type
• Cracking pressure optimized
• Suitable for vertical/horizontal lines
• API 598 tested

Y Strainers

Also called wye strainers, these remove solid particles from fluids to protect downstream equipment like pumps and valves.

• Stainless steel mesh filter
• Compact Y-shaped design
• Easy maintenance & cleaning
• Flanged or threaded ends

Knife Gate Valves

Designed for slurry, viscous, and abrasive media. Features a sharp-edged gate that cuts through solids for tight shutoff.

• Wafer or lug type
• Resilient or metal seated
• Pneumatic or manual actuation
• Ideal for wastewater & mining

Butterfly Valves

Lightweight quarter-turn valve using a rotating disc to control flow. Offers fast operation and low torque requirements.

• Center or double offset
• Rubber or metal seated
• Wafer, lug, or flanged
• ISO 10631 compliant

Plug Valves

Rotary motion valve with a conical or cylindrical plug to regulate flow. Offers bubble-tight shutoff and excellent durability.

• Lubricated or non-lubricated
• 2, 3, or 4-way configurations
• API 599 compliant
• High-cycle performance

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Our Services

From assembly to testing, we provide end-to-end valve solutions tailored to your industrial needs.

Valve Assembly

Complete in-house assembly of valves with precision components, ensuring optimal performance and leak-free operation.

Customized Products

Tailored valve modifications including heating jackets, special materials, custom dimensions, and connection types.

Pipe Connection Mode

Support for flanged, threaded, socket weld, butt weld, and wafer-style connections across all valve types.

Painting & Coatings

Protective coatings including epoxy, FBE, and anti-corrosion paints for harsh environments.

Valve Testing

Full compliance testing per API 598, ISO 5208, and customer-specific protocols for pressure, leakage, and cycle life.

Technical Support

Expert advice on selection, installation, maintenance, and troubleshooting from our engineering team.

Why Choose STV Valve?

Reliability & Quality

We prioritize product safety and performance. Our quality management systems ensure every valve meets international standards.

Certified Experience

Certified by ISO, CE, API, and other external bodies. Our manufacturing processes are audited and compliant.

Competitive Pricing

Self-owned casting factory with full CNC machining ensures cost efficiency and faster delivery than competitors.

30+ Years of Expertise

Over three decades of experience in industrial valve manufacturing, serving clients worldwide.

Great Customer Support

Personalized service, technical guidance, and responsive communication to add real value to your business.

Frequently Asked Questions

What standards do your valves comply with?

Our valves meet international standards including API 600, API 6D, ISO 5211, ANSI, DIN, JIS, and GB. We also customize to customer specifications.

Can you customize valves?

Yes. We offer full customization including materials, coatings, dimensions, actuation, and special testing requirements.

What is your production lead time?

Typically 30–45 days depending on order size and complexity. We offer expedited options for urgent needs.

Do you provide valve testing reports?

Yes. All valves undergo rigorous testing (shell, seat, backseat) and we provide full test documentation upon request.

What regions do you ship to?

We export globally — North America, Europe, Middle East, Africa, Southeast Asia, and Australia.

Get in Touch

For quotes, technical inquiries, or support, contact our team directly.

Contact Information

Mr. Jalen Lee

Add: 88# Jifeng Road, Wenzhou City, 325025, Zhejiang Province, China

Phone: +86 151 5776 6245

Fax: +86-0577-85987444

Email: sales@stvvalve.com

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