0—default (no cex), Water fitting threads, 0—default to 3/8 bsp female (metric threads) – Apex Digital 5708009-C User Manual
Page 21: 1—3/8 npt female, 2—3/8 bsp to 1/2" npt, Custom configuration, A—standard configurations, B—exclusive option #1, C—exclusive option #2, D—exclusive option #3
