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13 Bend Radius; 1 1/2" ID Co -flex piping is capable of a 24" bend radius, the 2" ID Co - Flex bend radius is 36" without cracking, kinking or breaking. On site air temperature does effect the flexibility during installation, the piping is more pliable when warm. In extreme cold weather, pipe should be stored in -doors prior to installation. If using the "Direct Connection" clamps, it may be necessary to warm pipe ends prior to tightening clamp. Call Western Fiberglass for cold weather clamping instructions. Please see product technical data for additional information. PIPING ROUTE DESIGN: Flexible piping system routes and excavation requirements are quite different than for traditional ridged pipe. Direction changes are made with "sweeps" rather than 90's or 45's. In most installations, pipe trenching requirements are reduced. Thermoplastic hose (pipe) has different physical properties than those of FRP (fiberglass) or steel pipe. Like FRP, and even steel pipe, it can shrink and/or stretch depending on the temperature of the liquids within or external conditions. It reacts to changes in the temperature of the air or ground. When installing flex pipe systems, it is good practice to increase pipe run length requirements by 5-10% to allow for pipe contraction and any errors or changes that may have been made in distance measurements. Series pressure systems or vacuum type piping runs can be continuous, with the piping originating from one point and passing on to additional points until termination. Series routing is most desirable for pressure systems, the piping system runs from the tank to each successive dispenser. Single and\ or dual pipe lines can be installed to accommodate any total number of product dispensers. Suction system routing may require direct runs where each dispenser is connected to the tank sump via it's own pipe line or through a manifold to reduce pipe run lengths.