Home HEI HEI Tech Sheet #142 HEI Tech Sheet #142$57.76 Original price was: $57.76.$28.88Current price is: $28.88. Pressure Relief Devices for Feedwater HeatersData Sheet by Heat Exchange Institute, 12/13/2017 HEI Tech Sheet #142 quantity Add to cart Category: HEI Description Product Details Published: 12/13/2017 Number of Pages: 2 File Size: 1 file , 100 KB Related products HEI Tech Sheet #135HEI $57.76 Original price was: $57.76.$28.88Current price is: $28.88. Add to cart HEI Tech Sheet #121HEI $57.76 Original price was: $57.76.$28.88Current price is: $28.88. Add to cart HEI Tech Sheet #129HEI $57.76 Original price was: $57.76.$28.88Current price is: $28.88. Add to cart HEI Tech Sheet #134HEI $57.76 Original price was: $57.76.$28.88Current price is: $28.88. Add to cart