Specification

TIANYU C95800 Double-Plate Aluminum Bronze Lug Swing Check Valve

I. Product Overview

TIANYU C95800 Double-Plate Aluminum Bronze Lug-Type Swing Check Valve is a high-performance fluid control device designed to prevent reverse flow in industrial pipelines. Featuring a dual-plate structure and lug-type connection, it is primarily made of C95800 aluminum bronze—known for excellent corrosion resistance and mechanical strength. Compliant with international standards like API 594 and ANSI, it ensures tight sealing and reliable operation in harsh environments, serving as a critical component in systems where fluid backflow could damage pumps, valves, or other equipment.

II. Key Attribute Parameters

Size Range: 2″to 60″ (DN50 to DN1500), covering small to large-diameter pipelines, Adapt to everything from precision instrument pipelines to large industrial main pipelines.
Pressure Class: 150LB to 2500LB (PN16 to PN420), suitable for low, medium, and high-pressure systems, meeting diverse industrial pressure requirements.
Material Specifications:
- Body & Disc: C95800 aluminum bronze (high corrosion resistance, ideal for marine, chemical, and high-humidity environments); other options include WCB, WC6, CF8 (stainless steel), duplex stainless steel, etc., for different media.
- Sealing: Precision-machined metal-to-metal seals or soft seals (based on medium), ensuring zero leakage.
Connection Type: Lug-type (flange ends optional), allowing easy installation in any pipeline orientation (horizontal or vertical) without disrupting the entire system.
Temperature Range: -196℃ to 540℃ (varies by material), adapting to cryogenic and high-temperature media like steam.
Applicable Media: Water, oil, gas, and corrosive fluids (compatible with different materials for specific media).
Standards Compliance: Designed per API 594; face-to-face dimensions per ANSI B 16.10; flange dimensions per ANSI B 16.5/16.47; tested per API 598.

Product Overview

III. Feature Description

Dual-Plate Design: Two symmetric discs swing to open/close, reducing flow resistance compared to single-plate designs. The discs reset quickly to prevent water hammer, protecting pipeline equipment.
Zero External Leakage: Integral body and precision machining ensure tight sealing, eliminating external leakage—critical for hazardous or high-value media.
Versatile Installation: Lug-type connection allows installation in any orientation (horizontal, vertical, or inclined), adapting to limited space or complex pipeline layouts.
Renewable Seals: Split discs and replaceable seals simplify maintenance; worn components can be replaced without replacing the entire valve, reducing lifecycle costs.
Corrosion Protection: C95800 aluminum bronze resists saltwater, chemicals, and oxidation—ideal for marine, coastal, or chemical processing environments. Internal/external epoxy coating further enhances durability.

IV. Manufacturing Process

TIANYU adheres to strict manufacturing workflows to ensure precision and reliability:

Raw Material Inspection: C95800 aluminum bronze and other materials undergo chemical composition and mechanical property testing to meet standards.
Rough Machining: CNC cutting shapes the valve body, lugs, and disc blanks, ensuring basic dimensions.
Precision Polishing: Body inner walls and sealing surfaces are polished to Ra≤1.6μm, reducing flow resistance and ensuring tight sealing.
Disc & Hinge Processing: Discs are machined to strict tolerances; hinges (pins) are heat-treated for wear resistance, ensuring smooth swing motion.
Assembly: Discs, pins, and seals are assembled with precision alignment, testing swing flexibility to ensure quick response to flow changes.
Pressure Testing: Each valve undergoes API 598 tests—hydrostatic shell test (1.5× nominal pressure) and seat leakage test (1.1× nominal pressure)—to verify no leakage.

Valve Details

V. Product Advantages

Water Hammer Prevention: Dual plates close rapidly (faster than single-plate valves) to minimize pressure surges, extending pump and pipeline service life.
Cost Efficiency: Lug-type design reduces installation time; renewable components lower maintenance costs. Its long lifespan (10+ years in normal use) reduces replacement frequency.
High Reliability: Compliant with API/ANSI standards, ensuring compatibility with global pipeline systems. Stable performance in extreme temperatures/pressures minimizes unplanned downtime.
Corrosion Resistance: C95800 aluminum bronze outperforms carbon steel in harsh environments, reducing corrosion-related failures—ideal for offshore, chemical, or wastewater applications.

Application

VI. Product Applications

Marine & Offshore: Saltwater cooling systems, ballast pipelines—resists seawater corrosion to prevent valve failure.
Chemical Processing: Acid/alkali transfer lines, ensuring no backflow of corrosive media to protect reactors and pumps.
Power Generation: Steam pipelines in thermal power plants; prevents condensate backflow into boilers, maintaining system efficiency.
Metallurgy & Mining: Slurry or cooling water pipelines; dual-plate design resists abrasion, ensuring reliable operation in high-solids media.
Water & Wastewater: Municipal water supply or sewage systems; prevents backflow to avoid contamination or pump damage.

TIANYU C95800 Double-Plate Lug Swing Check Valve (2″-60″, 150LB-2500LB) suits water, oil, gas, -196-540℃. Features dual plates, zero leakage, versatile installation, corrosion resistance. Applies to marine, chemical, power sectors. Customizable in material and size for specific needs.