The Puddle Flange should be stretched and pushed over the pipe in order for it to settle into the desired position. If necessary, a soap-based lubricant can be used. When working with existing concrete structures, a good quality concrete bonding agent should be applied to the opening in the structure to ensure proper bonding of the fresh concrete or mortar to the hardened concrete. Puddle Flanges are not designed to serve as anchor points for pipes and do not provide significant axial restriction, so they should not be used alone when there are strong axial loads on the pipe.
In the case of HDPE pipes, where strong axial loads are present, the use of a Flex Restrain fitting for axial restriction is required. The PLASSON FLEX RESTRAINT electrofusion fitting is a flexible bar that is welded to the pipe by electrofusion to create a fixed support that prevents axial movement of the pipes. To determine the quantity of electrofusion fittings for each connection, a theoretical calculation must be carried out, considering the diameter of the pipe, the thickness of the pipe, the variation in temperature day vs. night and the speed of temperature variation. Theoretical calculations are based on the information provided by the manufacturer, so the result of the calculations only apply to the specific manufacturer’s products.