What is ASTM B 813? ASTM B 813 is the standard developed by the Copper Development Association Inc. (CDA), in conjunction with the American Society of Testing and Materials (ASTM) and representatives of soldering flux manufacturing companies. ASTM B 813 outlines performance requirements for soldering fluxes used in the process of joining copper and copper alloy tubing. The principle idea behind this standard is for contractors to use a water flushable flux on potable water systems.
The use of fluxes complying with ASTM B 813 drastically reduces the corrosive effect on copper tubing by requiring fluxes to be less aggressive. Excessive flux inside of a soldered joint can easily be removed by flushing the system with water.
The use of water flushable fluxes and the ASTM B 813 standard are being enforced regularly in certain areas of the country. Many state and local authorities are now starting to include this standard in their respective plumbing codes. It has also appears in the latest edition of the Uniform Plumbing Code (UPC), National Plumbing Code (NPC) and Standard Plumbing Code (SPC).
RectorSeal recommends Nokorode Aqua Flux which meets NSF 61 which insures that the product is safe to use on potable water systems. For more information on this product click on www.rectorseal.com