i got brass hose lock connectors, b& q's own brass ones. i use them to fill my tank with a stop cock system so tank does not overflow but the brass conectors drip all the time even with ptfe tape on, what the hell is it? they are new.

my van floor is getting wet all the time, also i want another connector on tank for by pass hose to flow back into tank so it means another male connector fitted which may drip??
