Appointment: for domestic, drinking, hot water supply and heating Made: according to TU 2248-002-21088915-2015 “Three-layer pressure-filled pipes made of glass-filled polypropylene (PP-R / PP-R GF / PP-R) TM“ VALFEX ”Material: PPR / PPR-GF / PPR Nominal Outer Diameter: 20mm; Operation class: 1,2,4,5, ХВ Operating temperature: 80 ° С Maximum working temperature: 90 ° С Nominal pressure, PN: 25 bar. Maximum working pressure (1 class) 1.0 MPa. Maximum working pressure (class 2) 0.6 MPa; Maximum working pressure (class 4) 1.0 MPa. Maximum working pressure (5th grade) 0.6 MPa Mounting technology: bell-shaped polyfusion welding Color: white (diameter 20-110 mm); gray (diameter 20-63 mm), the color of the middle glass-filled layer (PPR GF) - red Delivery form: segments 2 m long (white with a diameter of 20-40 mm) and 4 m (white 20-110 mm; gray 20-63 mm) Warranty: 7 years from the date of production