10 Plates Heat Exchanger 304 Plate Mini Stainless Steel Heat Exchanger Used for Gas BoilersHow to make your mind up the plate heat exchanger well suited for you ?1. First verify the number of plate heat exchangersYou can confirm the facet model of the original board changer, and you will also measure the thickness. Confirm back whether or not or not the water flow is parallel or crossBlow from one port to seem which port the air comes out from at the contrary side, if it comes out from a parallel port, it's a parallel circulate it comes out from the other corner of the mouth, it is the right communication3. Confirm whether or not or now not the water outlet is crimped or flat4. Measure the gap between the 2 screw holes, there are 148 and 154mm for sale