galvanic corrosion

If you have brass shutoff valve inserted into a hose that carries salt seawater, is it subject to galvanic corrosion? Should it be bonded, or would it be OK? Here's the situation. I have 3 air conditioner system on my boat. They are fed by a single raw water pump, with individual supply...

Just some trivia. Whenever two dissimilar metal components of your boat are in saltwater, corrosion will damage the one that is located lower on the following list from Wikipedia: "Galvanic series (most noble at top) The following is the galvanic series for stagnant seawater. Graphite...