U Type Butterfly Valve China Factory and Leading Suppliers

U Type Butterfly Valve China Factory and Leading Suppliers

High-performance U Type Butterfly Valve from a leading China factory. Compliant with API 609, EN 593, and BS 5155 standards. Sizes up to 56 inches with ISO 5211 top flanges. Trusted suppliers providing professional flow control solutions.



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The U Type Butterfly Valve is a high-performance flow control solution engineered for industrial precision and durability. Designed in accordance with rigorous international standards including API 609, EN 593, and BS 5155, this valve ensures optimal sealing and efficient fluid regulation across a wide range of applications in the general equipment and valve manufacturing sector.

With available sizes up to 56 inches, our butterfly valves are constructed from premium materials such as ductile iron and stainless steel to withstand demanding operational environments. Whether managing water, chemicals, or industrial gases, the U Type Butterfly Valve provides a reliable, low-torque operation combined with a space-saving design, making it an ideal choice for modern piping systems.

Detailed Parameters

Design StandardsAPI 609 / EN 593 / BS 5155 Flange DimensionsEN 1092-2 / BS 4504 / ASME B16.1
Top FlangeISO 5211 Face to FaceEN 558 / ISO 5752 / DIN 3202
Inspection StandardAPI 598 / EN12266 Max SizeUp to 56"
Body MaterialCast Iron / Ductile Iron Stem MaterialStainless Steel
Seat OptionsNBR / EPDM / PTFE Disc MaterialDuctile Iron / Al Bronze / Stainless Steel

Key Advantages

Superior Durability

Built with high-grade ductile iron and stainless steel for maximum resistance to wear and corrosion.

Long Service Life

Precision-engineered components and PTFE bushings reduce friction for extended operational longevity.

Global Compliance

Fully compliant with API, ISO, and DIN standards, ensuring seamless integration into global projects.

Optimized Flow

U-type design minimizes pressure drop and optimizes flow rates for high-efficiency fluid management.

Versatile Sealing

Choice of NBR, EPDM, or PTFE seats allows for custom compatibility with various chemical mediums.

Easy Installation

Standardized flange dimensions allow for quick installation and effortless replacement in the field.

Product Gallery

U Type Butterfly Valve China Factory and Leading Suppliers

Management Platforms

Quality Control

Strict adherence to API 598 testing protocols to ensure zero-leakage performance.

Material Traceability

Full certification for all body and stem materials to guarantee industrial grade standards.

Order Tracking

Real-time production monitoring from casting to final assembly and testing.

Logistics Support

Global shipping coordination with specialized packaging for large-diameter valves.

Inventory Management

Strategic stockpiling of common sizes for rapid delivery to critical project sites.

After-Sales Service

Professional technical support for installation and periodic maintenance guidance.

Investment Return Comparison

FeatureStandard Butterfly ValveU Type Professional Valve
Sealing TightnessModerateHigh Precision (Zero Leakage)
Maintenance CycleFrequentExtended (Low Wear)
Operating TorqueStandardOptimized / Low Torque
Corrosion ResistanceBasicEnhanced (SS Stem/Disc)
Long-term ROIMediumHigh (Lower OpEx)

Frequently Asked Questions

Q: What are the primary material options for the valve seat?

We offer NBR, EPDM, and PTFE seats. NBR is ideal for oil-based fluids, EPDM for water and steam, and PTFE for highly corrosive chemical applications.

Q: Does the U Type Butterfly Valve comply with international flange standards?

Yes, our valves are manufactured to meet EN 1092-2, BS 4504, and ASME B16.1 flange dimensions for global compatibility.

Q: What is the maximum size available for this series?

The U Type Butterfly Valve series is available in a wide range of sizes, reaching up to 56 inches to accommodate large-scale industrial piping.

Q: How are the valves tested before shipment?

Every valve undergoes rigorous inspection and testing in accordance with API 598 and EN12266 standards to ensure structural integrity and leak-proof performance.

Q: Can these valves be integrated with automated actuators?

Yes, the top flange dimensions follow ISO 5211, allowing for easy mounting of pneumatic or electric actuators for automated control.

Q: Which body material is best for corrosive environments?

For enhanced durability, we recommend ductile iron bodies paired with stainless steel or aluminum bronze discs and stems.

Need Expert Guidance on Valve Selection?

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