KOSO Valve Spray Painting Line

I. Introduction

The valve spray painting line is designed for coating various types of
valves, including ball valves, gate valves, and globe valves. The system
enhances corrosion resistance, prevents chemical media erosion, extends valve
lifespan, and ensures stable and safe industrial operation.

II. Application Areas

1. Petrochemical Industry

• Used in oil extraction, refining, and chemical production to regulate fluid
  flow, pressure, and direction.

2. Power Industry

• Essential for thermal, hydro, and nuclear power plants to control steam,
  cooling water, and other fluids.

3. Metallurgy Industry

• Used in steel and non-ferrous metal smelting, where valves must withstand
  high temperatures, high pressure, and corrosive substances.

4. Urban Water Supply & Drainage

• Applied in municipal water supply, drainage, and wastewater treatment to
  regulate water flow and pressure.

5. Shipbuilding Industry

• Used in marine environments, where valves must endure high humidity and
  salt spray corrosion.

III. Technical Overview

1. Basic Principles

• The system utilizes automated or semi-automated processes to uniformly apply
  protective coatings to valve surfaces, enhancing corrosion resistance, rust
  prevention, and aesthetics.

2. Core Process Flow

• Spray Booth

• Enclosed structure with positive pressure air supply and multi-layer
  filtration (primary, medium, high-efficiency filters) for a dust-free
  environment.

• Explosion-proof design with VOC treatment systems (e.g., activated carbon
  adsorption, catalytic combustion).

• Workpiece Conveying System

• Custom conveyor solutions (e.g., overhead chains, roller beds, rotating
  platforms) accommodate different valve sizes and weights.

• Variable-frequency speed control supports continuous or intermittent
  operation.

• Intelligent Control System

• PLC/Industrial PC centralized control with HMI (Human-Machine Interface)
  for real-time monitoring of paint flow, pressure, and speed.

• Supports data tracking, fault diagnostics, and remote maintenance.

• Environmental Protection System

• Paint mist recovery system (wet curtain or dry filter) with 98%+ filtration
  efficiency.

• Exhaust gas purification system (RTO, zeolite rotor) ensures compliance
  with GB 16297 environmental standards.

IV. Technical Advantages

1. Superior Coating Uniformity

• Precise atomization pressure and spray width control, preventing dripping,
  orange peel effects, and defects.

2. Flexible Adaptation

• Modular design, customizable for workpieces up to 30m in length and 50 tons
  in weight.

3. Safety & Reliability

• Explosion-proof electrical systems, gas leak alarms, and emergency stop
  mechanisms ensure safety.

4. Eco-Friendly Design

• VOC emissions <50mg/m³, meeting strict environmental regulations such as
  China’s Air Pollution Prevention Act.

V. Development Trends

1. Larger Equipment for Large Workpieces

• As valve sizes increase, spray painting systems must expand
  accordingly.

2. Intelligent Automation

• AI, robotics, and real-time monitoring improve precision and
  efficiency.

3. Green & Sustainable Coating

• Adoption of low-VOC, environmentally friendly coatings and advanced spray
  technologies.

4. High Efficiency & Energy Optimization

• Enhanced system design for better energy utilization and lower operational
  costs.