LLDPE is more robust than traditional low or medium density polyethylene and is recommended for use with cold and intermittent hot water applications such as water purification, water conditioners, ice makers and misting systems. RO-MAN provide a complete range of accessories and component spares for all your Reverse Osmosis needs. We stock flow restrictors, clips, brackets, o-rings, housings, John Guest and white fittings for tube.