Upgrade your hot water system with our durable Element bush from Green Heat. This 1-3/4" to 1-1/4" reducer fitting is suitable for most Rinnai and HJ Cooper cylinders, ensuring a seamless fit for a standard-sized element. Featuring a robust o-ring, it provides a perfect watertight seal to prevent leaks, enhancing efficiency in your PV solar hot water systems. Crafted from 316 stainless steel, this high-quality metal offers exceptional corrosion resistance, guaranteeing a lifetime of reliable use.