I decided to add these block drain valves (brass 1/4 turn compressor drain valves) to aid in the draining of the EG side of the cooling system. dont like the thought of EG in the bilge. I keep a threaded plug in them in the event engine vibration causes one or both of the valves to rotate to the open position.

When draining becomes necessary I ensure the valves or closed and remove the plug and install a 1/4" X 3/8" threaded hose barb and run the hose into an empty jug laying on its side next to the engine mount.

Did this a while ago so I could add my new temp switch for the engine alarm without spilling toxic EG into the bilge, worked out great.
When draining becomes necessary I ensure the valves or closed and remove the plug and install a 1/4" X 3/8" threaded hose barb and run the hose into an empty jug laying on its side next to the engine mount.
Did this a while ago so I could add my new temp switch for the engine alarm without spilling toxic EG into the bilge, worked out great.
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