API 609 C95800 Aluminum Bronze Pneumatic Flanged Butterfly Valve for Seawater

Product Overview

The API 609 C95800 Aluminum Bronze Pneumatic Flanged Butterfly Valve is a professional marine-grade flow control valve specially designed for seawater, saltwater, offshore and coastal corrosive working conditions. Manufactured in full compliance with API 609 and ISO 10631 industrial standards, this flanged butterfly valve adopts high-performance ASTM B148 C95800 nickel aluminum bronze material for the valve body and disc, providing excellent anti-rust, anti-oxidation and superior seawater corrosion resistance that carbon steel and stainless steel valves cannot match.

Equipped with a high-quality pneumatic actuator, the valve realizes automatic on-off and remote control, featuring quick operation, zero leakage, stable performance and long service life. The rigid flanged connection ensures high sealing reliability under vibration and seawater erosion. Widely applied in offshore platforms, ship piping systems, seawater desalination, coastal chemical plants and marine engineering projects, this C95800 aluminum bronze butterfly valve is the most reliable solution for long-term seawater service pipelines.

Key Features & Advantages

1. API 609 Standard Compliance

Strictly designed and tested according to API 609 Category B, covering structural dimensions, torque standards, sealing performance and pressure resistance. Fully meets international marine and offshore project acceptance standards, compatible with global industrial pipeline systems.

2. C95800 Aluminum Bronze Seawater Corrosion Resistance

Valve body and disc adopt ASTM B148 C95800 Nickel Aluminum Bronze. This material has excellent resistance to seawater erosion, chloride ion corrosion and marine atmosphere oxidation. It avoids rust, blockage and leakage problems commonly found in ordinary steel valves, and can operate stably in full seawater immersion environment for decades.

3. Pneumatic Automatic Control System

Matched with high-performance pneumatic actuator, available in double-acting and single-acting (fail-safe) types. Fast opening and closing speed, stable action, no jamming. Support 4-20mA proportional regulation and remote PLC control. IP67 protection grade, suitable for humid and salty marine working environment.

4. Flanged Connection for High Sealing Stability

Standard ASME B16.5 flanged end, easy installation and disassembly. The flange sealing surface is precisely processed to adapt to high-strength gaskets, effectively resisting pipeline vibration and seawater pressure impact, ensuring zero leakage for a long time.

5. Zero Leakage & Long Service Life

Adopts high-elasticity marine-grade soft seal or metal hard seal optional. Bi-directional tight shutoff, fully reaches API 609 and EN 12266-1 zero leakage standard. C95800 bronze material has good wear resistance and fatigue resistance, greatly reducing later maintenance costs.

6. Wide Temperature & Pressure Adaptability

Suitable for -20℃ ~ 120℃ seawater medium. Pressure range Class150 / Class300 (PN16-PN50). Stable performance under continuous seawater scouring and harsh marine climate.

Technical Specifications

Applications

•Offshore & Marine Engineering: Offshore platform seawater cooling system, ship seawater pipeline, marine fire water system

•Seawater Desalination Plant: Raw seawater intake pipeline, circulating water pipeline

•Coastal Industrial Projects: Coastal chemical factory, seaside power plant, port water supply and drainage system

•Oil & Gas Industry: Offshore oil and gas auxiliary seawater circulation system

•Marine Aquaculture & Coastal Facilities: Long-term seawater immersion pipeline control

Why Choose Our C95800 Seawater Butterfly Valve?

✅ Professional Seawater Grade Material — C95800 aluminum bronze completely solves seawater corrosion and rust problems, far more durable than WCB and stainless steel valves in marine environment.

✅ API 609 Certified Performance — Fully compliant with international marine valve standards, suitable for global offshore and marine bidding projects.

✅ Pneumatic Intelligent Control — Fast response, remote automatic control, reducing manual operation cost.

✅ Flanged High-Reliability Structure — Anti-vibration, anti-scour, zero leakage for long-term operation.

✅ Marine Customized Solution — Professional tailored for seawater working conditions, stable performance and ultra-long service life.

Order & Certification Information

MOQ: 1 Unit

Lead Time: 20-35 working days

Test Report: Factory test report, material certificate EN10204 3.1, API 609 inspection report

Packing: Anti-corrosion treatment + Export wooden case

Warranty: 18 months quality warranty

Contact us for custom sizes, pressure classes, pneumatic accessories and full sets of marine engineering valve solutions.

What Is an API Pneumatic Flanged Butterfly Valve

An API Pneumatic Flanged Butterfly Valve is an automated quarter turn valve designed to regulate or isolate the flow of liquids, gases, and other process media. The valve uses a rotating disc positioned within the flow passage, while a pneumatic actuator provides opening and closing force through compressed air. Flanged ends allow secure installation in pipeline systems. Designed according to API requirements, the valve delivers dependable performance in industrial applications involving oil, gas, chemical processing, and water treatment.

Why the API Pneumatic Flanged Butterfly Valve Matters

This valve is important because it combines reliable flow control with fast and efficient automated operation. Pneumatic actuation enables remote control and easy integration with plant automation systems. The compact structure reduces installation space and simplifies maintenance. API compliant construction ensures consistent quality and dependable sealing, helping improve operational safety and maintain stable process conditions in demanding industrial environments.

Common Product Types by API Pneumatic Flanged Butterfly Valve

Common product types include concentric butterfly valves, double offset butterfly valves, and triple offset butterfly valves. Pneumatic actuators may be configured as double acting or spring return designs. Soft seated versions are suitable for general service, while metal seated configurations are used for high temperature and abrasive media. Optional accessories include positioners, solenoid valves, limit switches, and air filter regulators for enhanced control capabilities.

Key Advantages of API Pneumatic Flanged Butterfly Valve

The valve offers quick operation, reliable sealing, and low operating torque. Pneumatic actuation provides rapid response and safe performance in hazardous areas. The compact and lightweight design reduces installation costs and supports easy maintenance. Flanged ends ensure secure pipeline connections, while API construction standards contribute to long service life and dependable operation across a wide range of industrial applications.

API Pneumatic Flanged Butterfly Valve Machine Structure and Core Stations

Manufacturing begins with casting or forging the body, disc, and shaft components from suitable materials. Core stations include CNC machining of flange faces, shaft bores, sealing surfaces, and disc profiles. Assembly stations install the shaft, seat, bearings, seals, and pneumatic actuator with related accessories. Final operations include actuator calibration, pressure testing, coating, marking, and packaging to ensure accurate operation and leak tight sealing performance.