EL01.jpg [1/15] Author: J. Stormer Source: 050624PP J. Stormer Copyright: 2005 J. Stormer Credit: J. Stormer Caption: Bronze ball type seacock. Note the flange at the base, which is bolted through the hull. This is an excellent seacock, but the fittings attached (white) are PVC and the hose clamps (upper right) are the poorer quality "punched slot" type. Having the handle of this sewage discharge secured in the "open" position also violates USCG regs.