tyre pressure on twin wheelers

[becky]

while messing with the van, noticed the valves on the rear wheels.

the inside wheels valve points towards the outside, so is easy to check and inflate.

but the outside wheel valve points under the van and is sandwiched between the 2 wheels.

does a normal garage tyre inflator fit this, or do i need an adapter or do i have to proform karma sutra type positions.

i don`t want to try and deflat the tyre, not being able to inflat it again.

cheers kev