Wilkins Model 350DA DCDA

350DAThe Wilkins 350DA/350ADA is a double check detector assembly ( DCDA ).  It is available in 2 ½” – 10” sizes and has been in production since 1998.  The “A” series began in 2004 and indicates that the inlet and outlet of device body are grooved instead of flanged.  Parts are interchangeable between the 350DA and 350ADA series except on 2 ½” – 3” sizes where the repair parts are different.  The body is made of ductile iron with a fused epoxy coating.  The 350DA/350ADA utilize a ¾” 950XLD for the bypass assembly.

Parts Breakdown



Repair Procedures



Repair Videos


2 1/2″ – 3″ 350DA Repair Video

4″ – 6″ 350DA Repair Video

8″ – 12″ 350DA Repair Video



Repair Guy Article


Not Currently Available


Spec Sheet





Category: Wilkins