The HYMAX Pro Dedicated Size Coupling, also known as flexible couplings, is engineered for new construction projects to provide an easy and safe means of joining same-size plain end pipes without the need for welding and/or special pipe fittings. Applicable to the water and wastewater, irrigation and industrial markets, the HYMAX Pro dedicated size couplings are available from sizes 4” to 24”. All couplings from this HYMAX Pro line, conform to the AWWA C219, NSF 61, and NSF 372 standards for drinking water system components.