NVE 4307 - Check Valves; Primary Shutoff; Secondary Shutoff;Moisture Trap; Bag House

4307 & 4310 Blower | 19
Check Valves
For vacuum only setups, the blower system will need to have an appropriately
sized check valve on the inlet side of the blower.
If the blower is to be operated in a pressure mode, a check valve will need to be
used on both the ballast air system and the intake side of the blower. Note that
the ballast circuit normally draws air into the blower.
Use the same size check valve as the hose used to plumb the system.
Primary Shutoff
A primary shuto is to be used with the blower as a rst line of defense to prevent
liquid from entering the blower. It is crical that an appropriately sized primary
shut o is used. Contact NVE for assistance with selecng the shuto.
Secondary Shutoff/Moisture Trap
The secondary shuto or moisture trap should also be appropriately sized for the
air ow applicaon. Contact NVE for assistance with selecng the shuto.
Bag House
Bag houses are typically used in systems where dry material is being pumped.
Specicaon of a proper bag house depends on the frequency and type of dry
material being pumped. Consult the factory for assistance in selecng a bag
house.
Operation
Initial Start Up Preliminary Checks
Before operang a blower that has been stored for any length of me, remove the
intake and exhaust covers and inspect the rotors and cylinders to insure the
absence of rust. In addion, remove the oil ll plug on the drive oil tank and
inspect the gear for absence of rust.
Verify the blower spins freely by hand.
Verify all connecons between the plumbing system and the blower anges are in
place and ght.
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