<B>Marshall G784-9 1/2 inch MPT x 1/2 inch MPT Check Valve for Water Heater Review</b><P>http://tinyurl.com/p3x8bbs <P><P> Marshall G784-9 1/2 inch MPT x 1/2 inch MPT Check Valve for Water Heater <P>Check valve for a water heater<P>Valve measures 1/2 inch x 1/2 inch, male pipe threaded on both ends<P>Winnebago Industries part number 110438-02-000<P>
