as advice by warren of greenfuel i can remove the nut and check the filter and clean it. ito ang nakita ko, punit yung o-ring and my filter is very dirty, lahat ng mga black flakes na nasa papel galing yan sa filter ng lpg ko. i try to get a new o-ring and blow off the dirt sa filter and assemble the thing back. so far no leaks. will monitor kung magkakaron ulit.

natakot lang ako nung niluluwagan ko yung nut (actually bolt pala ito) biglang sumingaw ng malakas yung lpg ko. yun pala yung natitirang lpg sa line.