From 329,- Pipe-in-Pipe Potable Water System Pay & Collect Submit your order now and collect your items at your local Biltema store in 2 hours! This is how Pay & Collect work Type-approved for potable water systems. Complies with ISO 15875-2. Max. 10 bar at 70 °C (peak 95 °C). Supplied in rings. Class 5 / 10 bar. With polyethylene protective pipe (PE).