Nut in Tank Fitting with backnut and washer 3/4bsp thread with 3 stepped hose barbs 25, 19 & 12mm. The fitting can be cut down to each size to increase to the correct bore of the Hose Barb.
Used to add a hose connection to fresh and waste water tanks. Simple cut a suitably sized hole in the tank wall, insert the fitting and washer from outside with a smear of silicone sealant to the joint, add nut to inside and tighten up. Add hose to the barb of the hose fitting and secure with an HC hose clip.
