Electric Stainless Steel Flange Butterfly Valve High Temperature Control Ball for Marine Water Gas Oil-General

Product Overview

TIANYU Electric Stainless Steel Flange Butterfly Valve: An Outstanding Choice for Industrial Fluid Automation Control

TIANYU electric stainless steel flange butterfly valve is specially developed for industrial automation fluid control scenarios. With advanced design concepts and exquisite manufacturing processes, it provides stable and reliable fluid transportation solutions for industries such as petrochemical, water supply/drainage, food, and medicine. From the core structure to performance, this product demonstrates deep adaptation to strict industrial requirements.

I. Analysis of Core Product Features

(A) Double Eccentric Sealing Structure Design

TIANYU butterfly valve adopts a double eccentric design, where the rotation center of the disc is offset from both the pipeline center and the sealing surface center. This structure makes the disc disengage from the seat instantly during opening, reducing friction and wear. During closing, as the angle changes, the disc gradually compresses the sealing surface to achieve zero-leakage sealing. Tested at PN16 pressure, the leakage rate is below 1×10⁻¹⁰m³/s, meeting the API 598 Class VI sealing standard, suitable for high-demand media control such as flammable and explosive substances.

(B) All-Stainless Steel Material System

Component	Material	Performance Advantages
Body/Disc	304/316 stainless steel (CF8/CF8M)	Tensile strength ≥515MPa, chloride corrosion resistance, suitable for food-grade and chemical scenarios
Stem	2Cr13 stainless steel	Quenched and tempered to hardness HB220-250, blowout-proof design compliant with ASME B16.34
Sealing Seat	EPDM/NBR+PTFE composite material	Temperature resistance -20℃~150℃, compression set <8%, service life >8 years

(C) Intelligent Electric Drive System

Precision Control: Standard intelligent electric actuator supports 4-20mA signal input, with positioning accuracy of ±1%, enabling precise adjustment of valve opening.
Rapid Response: Full-stroke opening/closing time for DN100 specification ≤12 seconds, adapting to the fast response needs of automation control systems.
Safety Protection: Actuator protection class IP67, built-in overload protection and overheat protection, suitable for harsh environments like humidity and dust.

II. Key Technical Attributes

Parameter Category	Technical Indicators	Expansion Options
Size Range	DN50-DN1200 (2″-48″)	Customizable extra-large DN1400 (negotiable)
Pressure Rating	PN16 (1.6MPa)	Optional PN25/PN40 high-pressure types (up to 4.0MPa)
Applicable Temperature	-20℃-150℃ (standard type)	Special materials for low-temperature -46℃ and high-temperature 350℃ (customizable)
Connection Type	Flange connection (GB/T 9113, ANSI B16.5)	Wafer-type and welded-type interface customization
Compliance Standards	GB/T 12238, ISO 5281	API 609, CE, food-grade certification (NSF/3A)

III. Precision Manufacturing Processes and Quality Control

(A) Manufacturing Process Analysis

Body Molding: Adopts precision casting process. After investment casting of 304/316 stainless steel, ultrasonic testing (UT) is performed to eliminate internal shrinkage cavities, pores, and other defects. High-temperature annealing relieves internal stress to ensure uniform body strength.
Disc Processing: The disc is ground by a five-axis CNC machining center, with the sealing surface flatness error ≤0.02mm and surface roughness Ra≤0.8μm. Surface chrome plating (thickness ≥15μm) enhances wear and corrosion resistance.
Assembly and Testing: Assembled in a dust-free workshop to ensure internal cleanliness. Each valve undergoes a 1.5x nominal pressure (2.4MPa) hydrostatic strength test (holding pressure for 30 minutes), a 1.1x air pressure seal test (leakage rate detection), and a sampling of 50,000 opening/closing life tests.

(B) Quality Assurance System

Material Traceability: Batch numbers of key components can be traced to heat numbers and chemical composition reports, supporting third-party PMI material testing.
Third-Party Certification: Can provide (pressure resistance), sealing, and corrosion resistance test reports from institutions such as SGS and BV.
System Certification: Certified by ISO 9001 quality management system, and high-pressure models comply with API 609 standards.

Valve Details

IV. TIANYU Brand Customization Advantages

Drawing on more than 20 years of industrial valve manufacturing experience, TIANYU provides end-to-end customized services for customers:

In-Depth Technical Customization: Supports customization of non-standard pressure ratings, temperature ranges, connection standards (such as DIN, JIS), and special materials (Hastelloy, duplex steel), providing 3D modeling and fluid simulation analysis.
Efficient Delivery Capability: Regular orders are delivered within 25 days, small batch customization (MOQ 50 units) is shortened to 15 days, and a 72-hour emergency channel is activated for urgent orders.
Global Service Network: Provides an 18-month warranty. Three major service centers covering APAC, Europe, and North America respond 24/7. Critical spare parts are delivered by air within 48 hours, accompanied by digital installation manuals and remote operation and maintenance support.

Application

V. Product Application Scenarios

Food and Medicine Industry: 316 stainless steel + food-grade EPDM sealing material meets the requirements of sanitary fluid control, such as beverage production lines and purified water pipelines in pharmaceutical factories.
Chemical Industry: 304 stainless steel body resists acid and alkali corrosion, suitable for transporting acid-base solutions and organic solvents. Double eccentric sealing prevents medium leakage.
Water Supply and Drainage Projects: Realizes quick opening/closing and flow regulation of large-diameter pipelines in urban water supply and sewage treatment plants. Low flow resistance design reduces energy consumption.
HVAC Systems: Precisely controls the flow of hot and cold water, and electric drive adapts to building automation control systems (BAS).