Pneumatic Duplex Alloy 4A Segment V Port Ball Valve

Product Overview

The pneumatic duplex alloy 4A V type sector ball valve is a high-end special valve that integrates excellent corrosion resistance, precise regulation and control, and automated operation. Manufactured with ASTM A8904A duplex alloy (CD3MN/UNS J93370), combined with V-shaped sector spheres and high-performance pneumatic actuators, it is specially designed for precise flow control in harsh corrosive conditions and is an ideal solution for the chemical, Marine and energy industries.

Technical specifications

Product features

1. Outstanding performance of duplex alloy 4A

Ultimate corrosion resistance

High chromium (24-26%), nickel (5-7%), and molybdenum (2.5-3.5%) content

The pitting resistance index PREN is ≥ 38

Excellent resistance to stress corrosion cracking

Ultra-high mechanical strength

Tensile strength ≥ 690 MPa

Yield strength ≥ 450 MPa

Hardness HB: 240-290

2. Precise adjustment of V-shaped sector balls

Precise flow control

The V-shaped cut provides precise equal percentage flow characteristics

The regulation ratio is as high as 200:1, meeting the requirements of wide-range control

Control accuracy ±1% F.S.

Outstanding shearing capacity

The V-shaped edge effectively shears fibrous media

Suitable for slurries and media containing particles

3. High-performance pneumatic actuator system

Fast and precise control

Double-acting/single-acting spring return design

The full travel time is 2 to 8 seconds (adjustable)

Positioning accuracy: ±0.5°

Intelligent attachment integration

Locator (Analog/intelligent)

Limit switch

Solenoid valve

Speed controller

4. Specialized sealing system

Bidirectional sealing design

Spring-loaded valve seat ensures bidirectional sealing

Metal seal/soft seal is available

Fire safety

Complies with API607 standard

After the soft seal fails, a metal-to-metal seal is formed

5. Enhance structural design

Anti-cavitation design: Optimized V-shaped Angle effectively reduces the risk of cavitation

Low-noise operation: Special multi-stage voltage reduction design

Anti-clogging structure: The V-shaped sphere has a self-cleaning function

Application field

1. Chemical process

Regulation of strong acid and strong alkali media

Process control containing chloride ions

High-temperature corrosive medium

2. Oil and gas

Control of Acidic oil and gas fields

Water and chemical agent injection system

Pressure control for oil and gas transportation

3. Marine engineering

Seawater cooling system

Seawater desalination device

Offshore platform process system

4. Environmentally friendly energy

Flue gas desulfurization system

Wastewater treatment control

Chemical injection system

Summary

The pneumatic duplex alloy 4A V type sector ball valve, through the perfect combination of top-grade corrosion-resistant materials, precise regulating performance and reliable pneumatic control, provides industrial users with:

Ultimate corrosion resistance: Service life is increased by 5 to 8 times in harsh corrosive environments

Precise flow control: The V-shaped sphere achieves precise equal percentage regulation

Fast automatic response: Pneumatic execution ensures rapid and accurate regulation and control

Long service life: Designed for 20 years, with the lowest maintenance cost

This product is an ideal choice for precise control applications of corrosive media. With its outstanding performance and reliable quality, it provides a perfect solution for modern industrial process control.