137 / | HD | FLUID HANDLING |
315 | DF | WITH REPAIR, TAPPING OR ASSEMBLY MEANS {6} |
329.1 | DF | .~ Removable valve with normally disabled supplemental check valve {1} |
329.2 | DF | .~.~ Check valve disabled by normally movable main valve part {2} |
329.4 | .~.~.~ Spring bias |