866 Challenger Series |
9
www.natvac.com | 800.253.5500
System Requirements
High Quality Components
• The 866 Challenger is a high performance vacuum pump and
requires compatible, high quality components as manufactured by
NVE�
Shutoffs
• We recommend the use of NVE Part #: 200-1206-4HB portal/portal
shutoff, and NVE Part #: 216-140-4NPT-C, 14 gallon scrubber/
secondary shutoff.
Final filter
• We also require the use of a final filter. You can use our remote
mounted filter. (NVE Part #: 220-120-4NPT)
Hose
• Use 4” or larger hose to pump your system. We recommend you use
a hose that can withstand high temperatures and pressures such as
hot tar-asphalt hose.
Pressure relief and vacuum relief valves
• A pressure relief valve (2” or larger) and vacuum relief valve (1.5”
or larger) should also be incorporated into the system between the
vacuum pump and moisture trap.
• Your vacuum pump will potentially produce more pressure than
is safely allowed for you vacuum tank. Consult with your tank
manufacturer to determine the appropriate pressure rating.
• The vacuum relief valve will vary due to factors such as vacuum
pump RPM, ambient temperature, altitude of operation, and should
be set for operating vacuum of 20” Hg.
• Run the pump for 30 minutes with all tank valves closed
monitoring exhaust temperature. The relief valves should be set
to where the pump operates at a maximum temperature of 375
degrees F.
• Extremely hot and humid days will require close monitoring of pump
exhaust temperatures and may limit maximum duty cycle vacuum.
WARNING: The vacuum pump will likely put up far more pressure than
your vacuum pressure tank is designed to withstand. Over pressurizing
