No. What kind of item you have to test : Piping system, a vessel, a tank, a reinforcement.......?. You only need a valve (ball ball) to release slowly the pressure after the test. Please Mr Vani take precautions (Care,) wiht this pneumatics test.

Be Safe, WP

A high point vent is necessary for a hydrostatic test to insure the system is filled, and no compressible gasses remain. It is not necessary for a pneumatic as there should be nothing to vent but air.

A low point drain might be necessary for a pneumatic test if there might be fluid in the system that may affect test gauges or mask detection of leakage.

I'm sure you have considered this, or you would not be asking questions.

In pneumatic test additional drain or vents are not neccessary but vessel and air used should be dry. Slow venting can be achieved at the connecting point itself.