The Watts 757/757A is a double check valve assembly ( DCA ). It is available in 2 ½” – 10” sizes and has been in production since 2002. The body is made of stainless steel. The original version had an “A” suffix after the model number that contained bi-link check valve assemblies. It was replaced in 2008 by the 757 which contains a tri-link check valve assembly. The repair parts are interchangeable between both models.
2 1/2″ – 6″ 757/757A Repair Video
8″- 10″ 757 Repair Video
Repair Guy Article
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