The pipe is fitted with a restrictor to allow excess fuel pressure to bleed back to the fuel tank to reduce the possibility of carburettor flooding.
Genuine Weber DGAS / DGMS 38 carb carburettor service repair overhaul kit WE442
Weber DGAS / DGMS Insulator spacer gasket
Weber 32/36 DGV DGAV DGAS DGMS DFAV DCD throttle linkage kit universal
WEBER 32/36 DGAV , DGV, DGAS & DGMS CARBURETTOR THROTTLE LINKAGE LEVER KIT
WEBER 32/36 DGAV , DGV, DGAS & DGMS CARBURETTOR THROTTLE LINKAGE 53 INCH CABLE
WEBER DGAV/DGV/ DGAS/DGMS CARBURETTOR BRASS FLOAT 41030.019