I bought a Navpilot 300 but the pump I got with it is the wrong size. The pump size I need is the Octopus 10-12 which I purchased. I am having trouble finding the right fittings for the pump. I bought 1/4 inch NPT that will screw into the 10-12 but the hose for the pump will not screw on to those fittings. The orifice of the fitting is too small to allow hose to attach to the fitting?
Fitting kit for PUMPOCT10-1ma
- Thread starter Larman
- Start date
I think the document in the below link may be helpful to you. It calls out the OC17SUK42 - Octopus Hydraulic Autopilot Installation Kit 30"" hoses and fittings.
There are so many different types of fittings and thread pitch for hydraulics it's hard to tell, it may help to get a local dealer involved that does that hydraulic work. You may be able to find someone close by on the Furuno dealer locator. https://furunousa.com/en/company/find_a_dealer
Boat have different types of hydraulic connections and you can't mix them. Installing a pump is very custom work. I have spent several hours back and forth to get the correct adaptors for the last NP300 that I installed. ORFS (O-ring Face Seal) fittings that boats like Mercury use are totally different than say the 3/8" or 1/4" NPT fittings. ORB (O-Ring Boss) is another hydraulic fitting type. ORB uses straight threads (UNF) unlike the tapered threads used by NPT. With NPT the threads themselves create the seal when ORB or ORFS have a seal that must match up to a flat part (Boss) of the matching connection to seal up properly. It is rare to hear anyone talk about "Furuno hoses" unless they ordered something special like the older Verrado hose kits. To JJ's point, it might be best to work with your local dealer. I also would recommend putting hydraulic cut offs so if the pump ever springs a leak you can cut it out of the system and keep your steering.
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