Volume flow controller VRW

Overview
The mechanically automatic VRW volume flow controller maintains a constant airflow in round air ducts of Comfort Air Technology systems regardless of upstream pressure. The self-acting mechanical design requires no external power and delivers reliable, maintenance-free regulation even in demanding environments.

Features

• Volume flow control without external energy — no wiring required
• High flexibility — freely adjustable volume flows
• Insensitive to dust and environmental influences — maintenance-free with stable control
• Cost-effective solution for constant airflow regulation

Technical data

• Reference sound level: LpA = 35 dB(A)
• Volume flow range: 50 - 4500 m³/h
• Casing leakage: according to DIN EN 1751 Class C
• Sizes: Ø 80 - 400 mm
• Materials / Housing: Galvanized steel
• Design / Options: Silencer SDE (optional)

Technical specifications

• Type: Mechanically automatic constant volume flow controller (round design)
• Operation: Mechanically self-acting, no external energy required
• Volume flow range: 50 - 4500 m³/h
• Sound level: LpA = 35 dB(A) (technical data reference)
• Sizes: Ø 80 - 400 mm
• Casing leakage: According to DIN EN 1751 Class C
• Materials / Housing: Galvanized steel
• Options: Silencer SDE (optional)
• Maintenance: Insensitive to dust and environmental influences; maintenance-free with reliably precise control
• Installation: No cabling required