The testo 420 silicone-free, 5 m long connection hose is for differential pressure measurement up to 700 hPa, (mbar) maximum load.

For a reliable workmate that can keep up with the pressures of the volume flow in your air duct, choose this hose from Testo. It lets you measure the differential pressure between two points in your system, and a maximum load capacity of 700hPa means you can put it to the test in demanding environments. The hose is compatible with instruments and accessories in the 420 series, so it's a breeze to set up a complete system. To use it, connect it to your measuring instrument, click on 'application' and select 'pressure only'.

• Silicone-free for reduced risk of environmental contamination
• Length of 5m for a long-distance connection

• Hydraulic equipment
• Marine engineering
• Water plants

Yes, items in the 420 series have a wide operating temperature range of -5°C to +50°C, so you can use them in demanding applications.