Product Specifications: Brand: Generic Type: Air Knife Valve Diameter: 4 inch Material: Brass Product Features: High-quality Italian design from HWA: Ensures superior durability and reliable performance thanks to Italian manufacturing standards. Made of durable brass: Offers excellent resistance to corrosion and rust, ensuring a long service life. Knife mechanism ensures complete shut-off of air or gas: Provides a tight and reliable seal to air or gas flow. Compact and robust design: Withstands high pressures and harsh operating conditions. Quick and easy manual operation: The valve's opening and closing are easily controlled using the handle. Standard threaded connections: Easily connects to standard 3-inch piping systems. Applications: Air flow control in industrial systems: Used in factories and workshops to control the flow of compressed air. Gas flow control in various applications: Can be used to control the flow of natural gas, LPG, or other non-corrosive gases. Large air conditioning and ventilation systems: Used to control air flow in central HVAC systems. Agricultural applications: It can be used in pneumatic irrigation systems or in controlling the flow of gases used in some agricultural processes.