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Old 01-15-2018, 07:54 PM   #15
Maerin
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City: East Coast
Vessel Name: M/V Maerin (Sold)
Vessel Model: Solo 4303
Join Date: Jun 2013
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Quote:
Originally Posted by O C Diver View Post
While I don't ever hook to city water for the previously mentioned reason, if you choose to, you can incorporate a flow restricter before the connection to the boat. Simply, it reduces the hose diameter from 1/2" or greater down to a much smaller size. There's nothing to fail as it's only a hole through a pipe fitting. The same thing can be accomplished by plumbing a gate valve after the dock hose. Once you have it adjusted to the minimum required flow, just remove the hand wheel. The idea is to limit the flow to about 3 gallons per minute.

Ted
Yes, you can throttle the flow, but a gate valve is the wrong valve for that. Use a ball valve, or simply fit an orifice in line. The better and more reliable method is to use a pressure reducing valve in line. It will maintain the pressure to whatever it's set to, regardless of volume, and it won't (well, shouldn't) bleed pressure when there's no flow. Even with a PRV, there's still a potential for failure, so the advice from others to NEVER leave a connection charged that can put a virtually unlimited amount of water into the boat is spot on. Stuff breaks, and always in a sequence that Murphy rides herd on. That's why I opt not to make a connection to dockside water other than a hose into the tank.
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