The Ames LFC300N is a double check detector assembly (DCDA). It is available in 2 1/2″-10″ sizes and has been in production since 2014. The body is made of stainless steel. The LFC300N utilizes a 3/4″ LF2000B for the bypass assembly. The Watts LF757NDCDA is a private label of the LFC300N.