Watts Model 757DCDA / LF757DCDA (N, A, Z,) DCDA

757DCDAThe Watts 757DCDA/757ADCDA is a double check detector assembly ( DCDA ).  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 and  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.  The 757DCDA currently utilizes the ¾” 007M3 for the bypass assembly.  A lead free version ( LF757DCDA ) was introduced in 2014

Parts Breakdown

PDF    Series 757 DCDA / LF757DCDA Parts Breakdown


Repair Procedures

PDF Series 757DCDA / LF757DCDA Repair Procedures

Repair Videos

2 1/2″ – 6″ 757DCDA Repair Video

8″ – 10″ 757DCDA Repair Video

Repair Guy Article

Not Currently Available

Spec Sheet


Category: Watts
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