"From a recent post I made in another thread, the following pressure caps are available:
grey = 150 kPa (22 psi) superseded by the green cap
green = 150 kPa (22 psi) standard issue for all 700/900s
white = 100 kPa (15 psi) uncommon
black = 75 kPa (11 psi) standard issue for 140/240s
yellow = 50kPA (7psi) intended for industrial plant. "
Why the difference between 140/240's and 700/900's?
Tim
|