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Expansion joints now certified for handling potable water

| By Chemical Engineering

This company’s line of EPDM (ethylene propylene diene monomer) spool-type expansion joints has received NSF/ANSI 61 certification for equipment that comes in contact with either potable water or produPRoco WCcts that support the production of potable water. The certification applies to the following EPDM expansion joint products: Series 230; Series 233L/234L; Series 271; and Series RC/RE-23. These certified expansion joints are available in sizes ranging from 1 to 120 in. in diameter. For sizes less than 8 in. in diameter, the company recommends no more than one joint per 175 ft of pipe. All of the certified products are supplied with labels to identify them as NSF/ANSI 61. — Proco Products, Inc., Stockton Calif.