Are their any dual tubes that are made for batterys? I would relly like a
screen grid and triode in the same tube. However two triodes will work if
I
can't get what I want.

Take a look at the 3A8GT. It's a filamentary diode, triode and pentode on
an octal base, with a grid cap for the pentode. Data may be found at these
links:

http://www.mif.pg.gda.pl/homepages/f...49/3/3A8GT.pdf

http://hereford.ampr.org/cgi-bin/tube?tube=3A8GT