This Tube & Shell Pool Heat Exchanger is perfect for high-pressure setups. The 316 L Stainless Steel Tube and Shell Heat Exchanger’s function by one fluid running through the tube, while another fluid is running around the tube. There is a bundle of tubes inside a shell configuration, hence the name. It's 316 L Stainless Steel welded structure reinforces the strength and high-quality performance, quality matters to us because it benefits you.