SINGLE DIAPHRAGM PRESSURE TANK - PTB 130

Diaphragm tanks are commonly used on
 the discharge manifold to provide water storage for 
the system in very low flow situations.
 It decreases the running time of the booster pumps,
 thereby making the system more energy effective.

An advantage of bladder pressure tanks
 is that they typically last longer than
 diaphragm pressure tanks, 
since they don't have a diaphragm that can fail.

Diaphragm tanks are commonly used on the discharge manifold 
to provide water storage for the system in very low flow situations
. It decreases the running time of the booster pumps,
 thereby making the system more energy effective.