Which pvc fittings to use for vents?

[JohnDS]

I am piping out a vent setup for 2 basement baths. I see that home depot sells long radius, regular, and short radius fittings.

1) Which of the 3 should be used?
2) When using tees for the vents, should I be using combo fittings, sanitary tees, or just regular tees?

 

[breplum]

for 90s, regular are fine, if short radius is cheaper, they are fine to use if above flood level rim of fixtures. long radius are for drainage.

on tees for venting: sideways flat and vertical are fine, never use a tee on its back. if venting two opposing pipes and going vertical, then a twin ell is used