• A.

    The most common parts you need to replace on a regular basis include the rotor, shaft seals, and bearings. It’s a great idea to keep spare parts for your rotary valve. We have an NFPA compliance kit you can order to have the most important parts on your shelf just in case you need to make a quick replacement.

    Relevant for: Technical Support, NFPA
  • A.

    Too much clearance between the rotor, endplates and or housing can result in air loss. Measure the rotor to endplate and rotor to housing clearances to confirm that they are an NFPA compliant 0.0079 inches. If the clearance is larger than this, it might be time to replace your rotor, rotary valve, or have it sent back to ACS for a repair or evaluation. Make sure to stick to a maintenance schedule and check your clearances at least every three months.