CUSTOMIZED SERVICES

Professional Customized Large-Diameter Valve Solutions for EPC & Industrial Projects

One-Stop Industrial Valves Solution!

Wenzhou Tianyu Valve Technology Co., Ltd.; Abbreviation: TIANYU VALVE has been established for 14 years and is headquartered in “Oubei, Wenzhou – the Hometown of Chinese Valves”, is a professional industrial valve manufacturer and supplier in China (D – U – N – S® Number: 978678515). We specialize in providing high – performance valve products and customized solutions for domestic industrial fluid clients.

In industrial sectors where efficiency, safety, and compliance are non-negotiable—especially for EPC (Engineering, Procurement, Construction) projects—valves are the backbone of fluid control systems. As a China-based professional industrial valve manufacturer with decades of expertise, Tianyu Valves specializes in customizing large-diameter ball valves and butterfly valves (DN300 to DN4000) tailored to your unique operating conditions. Whether you’re managing an oil & gas pipeline EPC project, a power plant upgrade, or a municipal wastewater treatment facility, we deliver solutions that align with international standards, project timelines, and long-term reliability needs.

Unlike one-size-fits-all valves, our customized products are engineered to solve your specific challenges—from extreme temperatures and high pressures to corrosive media or space-constrained installations. We don’t just supply valves; we partner with EPC contractors, plant operators, and industrial buyers to provide end-to-end support, ensuring seamless integration into your systems.

Our Custom Valve Range: Focus on Large-Diameter Ball & Butterfly Valves

At Tianyu, we prioritize the products that matter most to industrial and EPC projects: large-diameter ball valves and large-diameter butterfly valves. Our customization capabilities extend to every critical component, ensuring compatibility with your process and compliance with global standards (API, ISO, CE, etc.).

API ASME BS DIN API6D Carbon Steel SS Wcb CF8 Anti-Explosion Ball Valve for Petroleum Oil Gas

Valve Type	Key Customization Scope	Typical EPC Project Applications
Large-Diameter Ball Valves (DN300–DN2000)	– Sizes: DN300 (12”) to DN2000 (80”), customizable for larger specs – Designs: Trunnion-mounted, floating, full-welded (for buried pipelines) – Materials: Carbon steel, duplex stainless steel (2205), Monel, Inconel, Hastelloy (for corrosive media) – Standards: API 6D, API 607 (fire-safe), ANSI Class 150–900 – Actuators: Electric, hydraulic, pneumatic (for EPC automation needs)	Oil & gas transmission pipelines, petrochemical refineries, LNG terminals
Large-Diameter Butterfly Valves (DN500–DN4000)	– Sizes: DN500 (20”) to DN4000 (160”), including ultra-large specs – Designs: Triple offset (zero leakage), double offset, rubber-lined (for wastewater) – Materials: Ductile iron, stainless steel, metal hard-sealed (for high temperatures) – Standards: API 609, ISO 5211, ANSI Class 150–300 – Connections: Flanged, lugged, wafer (for quick EPC installation)	Power plant steam systems, municipal water treatment, industrial wastewater, marine engineering

Valve Type

Key Customization Scope

Typical EPC Project Applications

Large-Diameter Ball Valves (DN300–DN2000)

– Sizes: DN300 (12”) to DN2000 (80”), customizable for larger specs

– Designs: Trunnion-mounted, floating, full-welded (for buried pipelines)

– Materials: Carbon steel, duplex stainless steel (2205), Monel, Inconel, Hastelloy (for corrosive media)

– Standards: API 6D, API 607 (fire-safe), ANSI Class 150–900

– Actuators: Electric, hydraulic, pneumatic (for EPC automation needs)

Oil & gas transmission pipelines, petrochemical refineries, LNG terminals

Large-Diameter Butterfly Valves (DN500–DN4000)

– Sizes: DN500 (20”) to DN4000 (160”), including ultra-large specs

– Designs: Triple offset (zero leakage), double offset, rubber-lined (for wastewater)

– Materials: Ductile iron, stainless steel, metal hard-sealed (for high temperatures)

– Standards: API 609, ISO 5211, ANSI Class 150–300

– Connections: Flanged, lugged, wafer (for quick EPC installation)

Power plant steam systems, municipal water treatment, industrial wastewater, marine engineering

We also offer customization for other industrial valves (globe valves, gate valves, plug valves) to support full-system EPC projects, but our core strength lies in solving the complex demands of large-diameter fluid control.

Core Advantages of Tianyu’s Customized Valves for EPC & Industrial Buyers

Our customization services are designed to address the unique pain points of EPC contractors and industrial operators—from tight project schedules to strict regulatory requirements. Here’s what sets us apart:

1. Tailored to Your Exact Operating Conditions

Every custom valve starts with a deep dive into your needs:

Media Compatibility: Choose materials (e.g., Hastelloy for acidic media, duplex SS for seawater) to resist corrosion and wear.
Extreme Environment Adaptation: Engineer valves for high temperatures (up to 450℃ for power plants) or cryogenic conditions (-196℃ for LNG EPC projects).
EPC Space & Installation Needs: Customize connection types (welded, flanged, lugged) or actuator mounting to fit tight project layouts.

2. EPC-Ready Compliance & Certifications

EPC projects demand strict adherence to international standards—and we deliver:

Key Certifications: API 6D (ball valves), API 609 (butterfly valves), ISO 9001/14001/18001, CE (0036), SIL3, API 607/6FA (fire-safe), and ISO 15848-1 (emission control).
Third-Party Testing: Every large-diameter valve undergoes rigorous testing (pressure, leakage, endurance) with detailed reports—critical for EPC project 验收 (acceptance).

3. Flexibility for All Project Sizes

Minimum Order Quantity (MOQ): 1 piece—ideal for EPC prototype testing or small-batch replacements.
Bulk Production Support: Scale up to hundreds of units for large-scale EPC projects, with consistent quality and on-time delivery (typical lead time: 4–8 weeks for custom large-diameter valves).

4. Cost-Effectiveness for Long-Term Operations

Custom valves from Tianyu reduce total cost of ownership (TCO) for EPC and industrial clients:

Durability: Materials and designs are optimized for your media, reducing maintenance frequency and downtime.
Energy Efficiency: Full-port ball valves and low-torque butterfly valves minimize pressure loss, cutting operational costs.
One-Stop Service: Avoid delays from multiple suppliers—we handle design, manufacturing, testing, installation guidance, and after-sales support.

Customization Process: Streamlined for EPC Project Timelines

We understand EPC projects run on tight schedules. Our 5-step customization process ensures speed, transparency, and alignment with your milestones:

Needs Analysis & Technical Consultation
Our engineering team (fluent in English, Spanish, and Arabic) collaborates with your EPC technical team to confirm:
- Fluid media (oil, gas, steam, wastewater), pressure (PN10–PN40), and temperature ranges.
- Large-diameter specs (DN size, end connections, actuator type).
- Compliance requirements (e.g., API 6D for oil,steam, air projects, NSF 61 for drinking water).
Solution Proposal & Quotation
Within 48 hours, we deliver a detailed proposal including:
- 2D/3D CAD drawings of the custom valve.
- Material certificates, certification plans, and lead time.
- Transparent pricing (no hidden costs for EPC bulk orders).
Prototype & Pre-Production Testing
For critical EPC projects, we produce a prototype for your inspection. Testing includes:
- Hydrostatic/pneumatic pressure tests (per API standards).
- Fire-safe testing (API 607) and leakage testing (ANSI Class VI for butterfly valves).
- Third-party witness testing (upon request, e.g., TUV or SGS).
Mass Production & Quality Control
Once approved, we start production with real-time progress updates for your EPC team. Every valve undergoes:
- In-line inspections (material composition, dimensional accuracy).
- Final performance testing (actuator operation, seal integrity).
Delivery, Installation Support & Acceptance
- We ship via reliable logistics (sea/air freight) with all required documents (certificates, test reports, installation manuals).
- Our technicians provide on-site or remote installation guidance for EPC teams.
- Formal acceptance sign-off to ensure compliance with your project standards.

Industry-Specific Custom Solutions for EPC Projects

Tianyu’s customized large-diameter valves are engineered for the world’s most demanding industrial sectors—with a track record of supporting EPC projects globally:

1. Oil & Gas Industry

Custom Valves: DN600–DN1200 full-welded trunnion ball valves (API 6D, Class 600) for buried pipelines.
Why It Works: Corrosion-resistant duplex stainless steel (2205) withstands harsh offshore/marine environments; fire-safe design meets EPC safety requirements.

2. Power Generation

Custom Valves: DN800–DN1600 triple offset butterfly valves (API 609) for steam and cooling water systems.
Why It Works: Metal hard seals handle high temperatures (up to 400℃); electric actuators integrate with power plant DCS systems.

3. Municipal Water & Wastewater

Custom Valves: DN1000–DN4000 rubber-lined butterfly valves (NSF 61) for wastewater treatment plants.
Why It Works: EPDM linings prevent contamination; large sizes reduce flow resistance for municipal EPC infrastructure projects.

4. Petrochemical & Chemical

Custom Valves: DN300–DN800 Hastelloy ball valves for acidic media (e.g., sulfuric acid).
Why It Works: High-alloy materials resist corrosion; DBB (Double Block & Bleed) design ensures zero leakage for hazardous chemicals.

Quality Commitment: Certified for Global EPC Standards

At Tianyu, quality is built into every custom valve—backed by international certifications that EPC contractors trust:

API Certifications: API 6D (ball valves), API 609 (butterfly valves), API 607/6FA (fire-safe).
ISO Standards: ISO 9001 (quality management), ISO 14001 (environmental management), ISO 18001 (occupational health).
Safety Certifications: CE (0036), SIL3 (functional safety), CU-TR (Eurasian compliance).
Emission Control: ISO 15848-1 (low-emission valves for oil & gas EPC projects).

Your Next Step: Get a Custom Large-Diameter Valve Quote for EPC Projects

Whether you need a DN300 custom ball valve for a chemical plant or a DN4000 butterfly valve for a municipal EPC project, Tianyu Valves delivers solutions that meet your technical, timeline, and budget needs.

Contact Our EPC Sales Team: Email: info@tyfluidgroup.com (24/7 English support).
Request a Free Consultation: Share your project specs, and our engineers will design a tailored solution.
View Custom Case Studies: Visit our website to see how we supported EPC projects in the Europe; Russia;Middle East, Africa, South America; and Southeast Asia,ect.

PRODUCTION CAPACITY

Certified Partner for Premium Industrial Valves

Industry Experience

14 Years+

Manufacturing Area

9000 m²

Production Employees

200 Persons‌+

Annual Production Volume

70000 Sets+