I don't know. Let's ask Jimco. Jimco, what do you think?? pat
You might find one at an RV store or at the junkyard.My 1970 Winne has a pressurized steel tank that is filled by the water inlet.A PO installed a tee,a water hose with a female end and two shut off valves after the tank.This set up allows you to bypass the water tank and filler when hooked up to city water.