IN WATER Seacock Valve Replacement (No Haul-Out Needed!)
8 January 2026 · 4 min · 3K views · Chametla, Mexico
Clyde adjusts snorkel gear on deck under clear sky
What this video covers
Trevor, aboard Sea Dream of Clyde in La Paz, replaces a failed seacock valve in the water after the ball-valve handle snaps internally while tapping into a sink drain pipe for an offshore saltwater pump.0:19 With a spare valve supplied by neighbor Brian, who had completed the same job on another boat, Trevor dives to insert a rubber-gasketed wooden bung into the through-hull fitting to stop water ingress before opening the valve.1:02 The old bronze valve shows pink discoloration indicating electrolysis.2:45 Once the bung seals the fitting, the old valve threads off with only a trickle of water entering.2:17 The hose barb fitting transfers to the new valve; threads are coated with Rector Seal No.3:39 5 liquid thread sealant before the new valve is screwed onto the through-hull.3:38 The bung is removed, the valve closes, and the repair holds dry.3:50 The corroded hose barb is flagged for replacement at the next haul-out.3:00 A rubber gasket between bung and through-hull is the key to a reliable temporary seal that keeps water ingress manageable during the swap.2:01
Boats in this video
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