20
| 607 PRO Challenger
Series
www.natvac.com | 800.253.5500
Making a vacuum tester
1� Procure a flange to mount on your 4-way valve, a
short 3” pipe nipple, a 3” pipe cap and a vacuum
gage�
2� Drill and tap a 1/4” N�P�T� thread in the pipe cap�
3� Assemble the flange, nipple, pipe cap and
vacuum gage�
4� Remove a flange from the four-way valve on your
pump�
5� Start the pump and confirm the location you have
chosen to test from is at vacuum�
6� Using the existing O-ring, fasten the testing flange
to your pump�
7� Start your pump and read the vacuum level on the
gauge�
