... system, consisting of: AEROFLEX insulation of EPDM, 2 x corrugated stainless steel tubes (feed and return), ... black protection film, UV-resistant, Silicone-sensor line 2 x 0,0.75² VDE Corrugated stainless steel ... 1988 part 7;---Dimensions according to DIN 52 275-2.---Long term temperature stability up to +150°C ... Lengths and Size Available:---Sizes: DN12 (R1/2”),DN16(R3/4”),DN20(R1”)---Lengths: 10m,15m ...