4-15. Valves (Cont).
(3) Water drain valve. (figure 4-8)
Some models of the filter/separator are equipped with petcock drain valve, which
require a 1/2 in. pipe coupling for installation.
(a) Remove water drain valve (1) from tank (2).
(b) Apply sealing compound to threads on water drain valve (1).
(c) Install water drain valve (1).
Figure 48. Water Drain Valve, Repair.