Process Equipment and Plant Design
The most common standard size of bubble caps used in industrial operation is

8" dia cap with 1" dia riser
1" dia cap with 0.5" dia riser
6" dia cap with 4" dia riser
4" dia cap with 8" dia riser

ANSWER DOWNLOAD EXAMIANS APP

Process Equipment and Plant Design
A stuffing box is used for

Reducing the resistance of fluid flow
Prevention of fluid leakage around moving parts
Facilitating smooth opening and closing of a valve
Absorbing the contraction/expansion of pipeline due to temperature changes

ANSWER DOWNLOAD EXAMIANS APP