I have a 2003 Catalina 270 with a Seward water heater under the port side cockpit bench. A hose comes out from the water heater about 4 inches long, then it is connected to a longer piece of hose by a PVC pipe, also about 4 inches long. All is held on by clamps. In the end of the PVC closest to the water heater is a small, one way filter. The PVC pipe broke. I need to replace it. It looks like the little filter might have been attached within the PVC piece, but I can't tell. I have tried West Marine, RV stores and tried to find the manufacturer on line. Anyone know where/how to find the part? Thank you.