our boiler thats about 6 years old has started dripping from where the hot water pipe connection fits on the boiler, at first i thought it was from the coupling where the pipe connects to the boiler but on closer inspection its leaking above that where the brass fitting enters the plastic housing that holds the prv, does anyone know if there is an O ring between the brass fitting and the plastic housingi have found a parts diagram on the web but it does not show that much detail.
