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Malfunctioning Marlon Seacock on Forward Head Discharge Thru-Hull

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royalserf	Malfunctioning Marlon Seacock on Forward Head Discharge Thru-Hull		Lead	[-]
Posts: 46 07/15/08 11:32:50	Tags : None The marlon (Forespar) seacock on the forward holding tank discharge became inoperable. It was so stiff I was afraid it would break when trying to open or close it! The Catalina Dealer that has the boat is trying to find a replacement Forespar seacock to install. Here is the problem........Only Catalina has the parts since the seacock is designated OEM and cannot be sold to any other distributor. The dealer is having a devil of a time getting the part from Catalina and I now also have a call into Catalina. Time thus far waiting for this part is 2 weeks and continuing. Is anyone else having this problem getting OEM parts from Catalina? Fred Drummond Royal Serf Hull #855 2 Cabin C/L Model 2004
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yorkrose		#1	[url]	[-]
Posts: 280 07/15/08 14:46:22	Fred, I don't have a source for the Forespar Marelon series 93 valve, although I have seen some companies advertise a few part numbers on the web. In any case, the valve is probably not really "broken"; it is most likely just stuck. The simple, quick, and cheap solution is to take the valve apart and clean it. Sure, Forespar warns about voiding the warranty, yadda, yadda, yadda. However, the valve is very simple and robust. Anyone with a reasonable amount of mechanical aptitude can easily deal with it. The job can even be done with the boat in the water. Simply dive underneath and drive a wooden plug in the outlet. I would use a proper tapered wooden plug, not the little plastic thing that Forespar puts in the valve handle. Then take the valve apart and clean it. I wouldn't leave the boat for a long time in this condition, but it is no problem for a few minutes. I have done this task all by myself a couple of times. Surely your Catalina dealer can find someone who could take care of this. You can always put in a new replacement later if so desired. By the way, the newer Forespar series 93 valves have a greatly improved handle attachment design. In the past these valves were pretty delicate, with a small square peg sticking out of the valve ball, and a small screw in the handle. Now the ball is designed with a much larger splined peg. I have not tried to break one, but it looks pretty sturdy. The Forespar valves that consumers can buy, such as the 850 series, still have the old square peg. They are junk, and should never be used for anything important. Regards, Gene Fuller Yorkshire Rose, C42 #870
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davidirvine		#2	[url]	[-]
Posts: 59 07/16/08 03:12:39	Fred I have had to replace a couple of mine but I discovered that there is no need to replace the part that goes through the hull. The valve splits just in the middle and in my experience the thread on this section is standard on all valves. By leaving the thru hull part in situ there is less chance of a leak I imagine.You can do it without even plugging the hole since it takes only seconds to unscrew one and replace. I am based in the UK and it is hard for me to get the right parts but each time I am in the US I buy a spare from Wests and they fit the original Catalina part perfectly. David hull 492
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yorkrose		#3	[url]	[-]
Posts: 280 07/16/08 06:36:08	Fred, Following up on what David said, I need to clarify my comments. I did not touch the "thru-hull" part that is bedded into the hull. I simply removed the 4 bolts that hold the valve together. It easily comes off the base flange that is still firmly fixed in place and still screwed to the thru-hull part. I have seen the manufacturer's instruction sheets for installing the complete system. The fitting, fastening, and bonding requirements for the thru-hull and flange parts are more exacting than one might expect. I suspect that is why Forespar says they will sell to OEMs only. Regards, Gene Fuller Yorkshire Rose, C42 #870
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royalserf		#4	[url]	[-]
Posts: 46 07/16/08 17:34:50	Gene and Dave thank you both. Gene what you describe is exactly what the dealer has done. He is still trying to get the part from Catalina. And so it goes........I appreciate your comments because it does clarify for me the issue of the entire assembly versas the body of the valve. The body of the valve is what we are trying to get from Catalina and not the thru-hull part. The dealer also seems to think we may have a chemistry issue here as well becuase of the crystals that build up from the "stuff" in holding tank. I believe he is trying to clean the valve itself but it appears to be still quite tight. We talked this morning and he is going to try to get me 2 valve bodies (one will be a spare since it is so difficult to get them anyway.) Again, thank you for your help. Now if I can just get this boat back in the water to do some Chesapeake Bay sailing before I have to head back down to the Bahamas in October all would be great!
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melelana		#5	[url]	[-]
Posts: 337 07/17/08 10:21:13	Fred, I've had very good luck calling Catalina, asking for "parts" and talking to Chris. Somehow he knows exactly what part works on Melelana, #175, despite the 18 years since she was built. Larry Larry Melelana Catalina 42 #175 1990 3cbn, wk Solomons, MD
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