Holding tank dip tube

[jackb]

Our holding tank has a 1 1/2" ID reinforced dip tube with an 1 11/16 OD I am having no luck finding a replacement. I could install an access port to the top of the tank thus making the OD a non-factor but I'm stubborn... to a point. The original hose allows just enough clearance for the hose to pass through threaded fitting. It would be so nice to get this crossed off my list.

[Jeff Barnes]

Jack,

From your post, I'm not quite sure what the issue is, but you may want to look at using 1-1/4 schedule 40 pvc. It has an ID of 1-1/4 and an OD of 1-11/16. I have the same dip tube set up on Blue Note although I have never has to replace it. 1-1/4 ID shouldn't be a problem given the application.

Jeff

[Jeff Barnes]

Jack,

From your post, I'm not quite sure what the issue is, but you may want to look at using 1-1/4 schedule 40 pvc. It has an ID of 1-1/4 and an OD of 1-11/16. I have the same dip tube set up on Blue Note although I have never has to replace it. 1-1/4 ID shouldn't be a problem given the application.

Jeff

[jackb]

I went down to the boat this evening. The fitting is 1 1/2" but the hose (which I didn't measure earlier) is actually 1 3/8 ID and then stretched over the 1 1/2 " fitting.

[Jeff Barnes]

I may have misunderstood your earlier post. It sounds as though your dip tube is reinforced hose..? The two CD 36s which I have refitted (early-mid 80s) both had rigid pvc dip tubes extending to within about 1-2 inches of the bottom of the holding tank. They attached to a PVC elbow fitting on the exterior top of the tank and connected to 1-1/2 hose for discharge. The fitting through the top of tank is well sealed eliminating odors. You may want to think about constructing this rigid arrangement with 1-1/4 or 1-1/2" rigid pvc.

Jeff

[jackb]

Job complete. I used 1 1/4” white sanitation hose. I used a dremel tool to enlarge it to 1 3/8 , applied some Dow RTV forced the hose over the nipple. All
Is well on hull #9. So glad to have this behind me and the Vberth back together.