Review on Perko 0456DP7 Marine Flush Valve by Mark Caperton

This is a great way to flush a stationary or stern drive boat. I installed them on two Volvo diesels and a set of Ivecos. They are easy to install and use. The guy I'm familiar with has a V-clamp and I've never had a problem with it breaking or leaking. I have a spare tube of the same diameter on the boat, an impeller and extra clamps just in case, but damn I don't need them. I usually use a length of garden hose with a valve or cap to make it easier to connect, but otherwise that's all you need to keep your boat's cooling system salt-free.