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Author Topic:   1999 23 Conquest Raw Water Valve

csj posted 04-25-2015 10:39 AM ET (US)
On my 1999 Boston Whaler 23 Conquest, I just realized there is some sort of valve at the stern pick-up for the raw water intake. What is the purpose of the valve. I might add it's very difficult to get to. The arm is currently vertical, and I assume that is open. Can anyone shed some light please.
jimh posted 04-25-2015 10:52 AM ET (US)
My interpretation of your narrative: you describe a through-hull fitting with a ball valve having a control handle. The orientation of the control hand to be in-line with the axis of the flow through the valve suggests the valve is open.
The purpose of a valve on a through-hull water pick-up is to close the supply of water downstream of the valve. This might be done to reduce the risk of the interior of the boat filling with water should any of the hoses connected to the water inlet fail.
What equipment is connected to this water pick up? This may also give you some hint about the purpose of the valve.
csj posted 04-25-2015 11:03 AM ET (US)
The pick up is for the raw water wash down and bait well, which has worked well for past years. Last year it appeared the ShurFlo pump may have out lived itself. I just put on a new pump, was just checking lines, and observed the valve. I might add it's rather impossible to get to if the valve needed any service.
RevengeFamily posted 04-27-2015 06:59 AM ET (US)
CSJ--I have a 1999 Boston Whaler 280 Conquest with similar through-hull fittings. The fittings on my Whaler are located in extremely obscure locations in the bilge. I believe this is due to the fact that, while being built, these through-hulls are installed before the top half of the hull is installed. It's much easier for the workers to build this way, but makes it extremely difficult for service once the boat is out in the real world. Once a year, before my boat gets wet, I become a contortionist, climb into the bilge to open and close these through-hulls. This way, I know, if I ever needed to close these valves on the open water, I can.
Norm
Jefecinco posted 04-27-2015 09:55 AM ET (US)
Some of those types of valves have a hole in the handle near the end. A sturdy rod can be fabricated to fit in the hole and allow the handle to be operated from a convenient location. If the handle lacks such a hole one can be added, although at some inconvenience.
Butch

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Author	Topic: 1999 23 Conquest Raw Water Valve
csj	posted 04-25-2015 10:39 AM ET (US) On my 1999 Boston Whaler 23 Conquest, I just realized there is some sort of valve at the stern pick-up for the raw water intake. What is the purpose of the valve. I might add it's very difficult to get to. The arm is currently vertical, and I assume that is open. Can anyone shed some light please.
jimh	posted 04-25-2015 10:52 AM ET (US) My interpretation of your narrative: you describe a through-hull fitting with a ball valve having a control handle. The orientation of the control hand to be in-line with the axis of the flow through the valve suggests the valve is open. The purpose of a valve on a through-hull water pick-up is to close the supply of water downstream of the valve. This might be done to reduce the risk of the interior of the boat filling with water should any of the hoses connected to the water inlet fail. What equipment is connected to this water pick up? This may also give you some hint about the purpose of the valve.
csj	posted 04-25-2015 11:03 AM ET (US) The pick up is for the raw water wash down and bait well, which has worked well for past years. Last year it appeared the ShurFlo pump may have out lived itself. I just put on a new pump, was just checking lines, and observed the valve. I might add it's rather impossible to get to if the valve needed any service.
RevengeFamily	posted 04-27-2015 06:59 AM ET (US) CSJ--I have a 1999 Boston Whaler 280 Conquest with similar through-hull fittings. The fittings on my Whaler are located in extremely obscure locations in the bilge. I believe this is due to the fact that, while being built, these through-hulls are installed before the top half of the hull is installed. It's much easier for the workers to build this way, but makes it extremely difficult for service once the boat is out in the real world. Once a year, before my boat gets wet, I become a contortionist, climb into the bilge to open and close these through-hulls. This way, I know, if I ever needed to close these valves on the open water, I can. Norm
Jefecinco	posted 04-27-2015 09:55 AM ET (US) Some of those types of valves have a hole in the handle near the end. A sturdy rod can be fabricated to fit in the hole and allow the handle to be operated from a convenient location. If the handle lacks such a hole one can be added, although at some inconvenience. Butch