Physical internal diameter of the 1/2 inch BSP fitting is 21mm.
PLEASE NOTE THAT 1/2" BSP HAS NOTHING TO DO WITH THE PHYSICAL SIZE OF THE FITTING IT REFERS TO THE THREAD SEE PICTURE
See below review left for this product
""I purchased this BSP Female fitting to replace my LPG boiler hose to a propane one from the Patio Gas clip style one. I know i could have just replaced the regulator but i thought i would replace the pipe too.
The new pipe was seriously hard to fit over the end of the BSP fitting, i took about 20 mins of being submerged in seriously hot water before i could get the fitting to fit inside the pipe - but i was happy about that as it showed me it was a decent and safe fit.
Soapy water checked for leaks and all good.
Well made brass adapter. Recommended""
Color:
Blue, Purple, White
Size:
20, 24
Material:
100% Polyester
1/2" BSP FEMALE FITTING TO LPG FULHAM NOZZLE TO 8mm I/D HOSE WITH WASHER
