Anti-drain valve

Hi All, having read about these valves & when going to start up there is no oil in the pipe between valve & pump. On my commando I have a manual valve(much like a pet cock) in the pump feed line, just thinking that all the oil will not dissappear from the line because it will air lock until the valve is opened again, so surely there is no danger of the pump being empty of oil?
Am I in danger of being abused? :lol:

Will it ever stop f******* raining?

Cheers.

Theoretically it should air lock and be full of oil as you say, but in practice the oil will still manage to seep away, particularly since it would have been hot and thin after it's last run and hence drained away quite easily.
Even so, I think you are in less danger with a manual valve because as soon as you open the valve oil will trickle towards the pump ready for first cranking. With a spring-loaded automatic valve there might be no oil waiting at the pump; the newly started engine will have to cause the pump to suck the valve open (usually via a cushion of air) before circulating oil though the crank.
But for God's sake ALWAYS CHECK YOUR VALVE BEFORE STARTING.

Cheers skim77, I take the precaution of hooking the ign key over the tap lever and having a stretch cord from t,grip to tap lever, hopefully soon I will try and hook up an oil press gauge.

EXTREME WARNING >>>>

IF you are going to fit one of these anti-drain valve PLEASE make sure you 'prime' the oil line between the valve and the engine ~ as the engine may well NOT suck up the oil !~ with same dire consequences ~
Happened to me but I shut down real quick and once I primed the oil line it was fine..

But it rattled my enthusiasm for the thing and I removed it and just live with the wet sumping~