Parts and Services

Parts and Services


NAO’s highly qualified Engineers will evaluate your specifications and compliance requirements to custom design equipment that meets or exceeds your emission control objectives. We understand that compliance standards are constantly changing and becoming stricter every year; we will design the best solution for your application. We work with your team to design a solution to maximize your efficiency. Contact our engineering team today to get started on your quote.


NAO strives for high quality and dependability throughout our product line. We understand that continuous improvement is essential to continue being a leader in combustion equipment. Our Resource and Development team utilizes our cutting-edge tools to create economical, safer and environmentally friendly improvements while meeting or going above regulatory standards.


NAO performs testing for various applications and for specific requests. NAO has two testing facilities. One facility is located in Philadelphia, Pennsylvania, and the other is in Plantersville, Texas, northwest of Houston. Between the two facilities, we have the capability for full-scale testing of any flame or detonation arrestor. Simulating winds up to 150mph.


Need parts immediately, we’re only a phone call away. Several of our units are still in use; some from the 1940’s. We’ll work with you if it’s only a part that you need to replace or if you need the unit refurbished, or replace; we’re here to help you. NAO’s competitively priced parts and our extensive inventory help with quick turnarounds. We understand the importance of a quick turnaround and we are at your service. We offer same day shipping for expedited stock orders. Our qualified team members will be able to assist you in deciding whether you can refurbish or have to replace your equipment. We are here to save you time and money. Contact our parts team today to get started on your quote.


NAO’s services include everything you need; installation support, OEM equipment customized to our customer’s specifications, retrofits, preventative maintenance, rentals, emergency service, and a fully stocked parts inventory. Have time restraints? Many times the preliminary inspection / audit can be performed with digital pictures and data by email. NAO’s team has been expertly handling parts and service since 1912 and is fully committed to providing dependable and competitive pricing for parts and service. We are capable of repairing or replacing full systems or parts of equipment manufactured by companies now out-of-business or who do not support their existing installations. Our service technicians are available worldwide; our purpose is to provide our customers with top quality diagnostics, and service. We understand the problems you face and the timelines you work under. With a wide range of technical services, training, and diagnostic support to address virtually any problem, anywhere, we can provide engineering and designs to correct basic flaws in improperly designed and poorly manufactured equipment of our competitors, and provide better-than-original replacement parts. Contact us for more information on our field services and preventative maintenance options.


  • Metal Fabrication
  • Bending, Forming, and Rolling
  • Shearing and Sawing
  • Sandblasting and Painting
  • Machining
Contact us for more information on our field services and preventative maintenance options.


NAO has helped numerous clients replace/retrofit our competitor’s poor performance flares and flare ignition package with a reliable NAO system. We’re here to help you; give one of our Sales Team members your specifications and we’ll quote a replacement/retrofit package to upgrade your flare system.

We offer:

  • Emergency Service / Repairs
  • Remote Trouble Shooting & Technical Assistance
  • Tune-ups
  • Replacement and Spare Parts
  • System Upgrades
  • Inspections and Recommendations
  • Installation and Start-up Assistance
  • On-site Technical Assistance
  • Training
  • Rebuilds & Retrofits
  • Modifications

There is no replacement, or repair job that’s too big, or too small for NAO; we will correct the problem and improve the performance of your unit.


Below you can see the difference in the before and after pictures and the work we performed to refurbish a flare tip. We were able to save our customer a lot of money by refurbishing their flare instead of replacing it with a new one.

  • Removal/Replacement of the Top Ring
  • Removal of the Steam Jets
  • Removal of the conical windshield
  • Inspection/grinding and re-welding of the Top Reinforcing Band
  • Replace existing lifting lugs with modified type to reduce potential of cracks in Conical Windshield
  • Inspect the steam Nozzle castings for cracks/wear and replace
  • Clean the steam Nozzles and Steam Ring Assembly prior to reinstalling steam nozzles
  • Check Flame retainers/welds repair/replace
  • Remove/replace center steam nozzle
  • Re-Install Conical Windshield
  • Re-Install Steam Ring Nozzles
  • Removal of the conical windshield
  • Provide pilots with new Gas Jet & Filter Assemblies
  • Provide pilots with new Air Adjusters
  • Check overall pilot status
  • Check the Thermocouple Wells and replace
  • Check the Thermocouples and replace
  • Provide New Ignitor Extensions
  • Provide New Pilot Gas Manifold Assembly
  • Provide New Thermocouple Junction Box
  • Sandblast and Paint Lower Section

Below you can see the difference in the before and after pictures where we replaced & corrected a competitor’s Arrestor Assembly. After testing, repairing, cleaning, and painting the unit, it looked and worked as if it were brand new and were able to save our customer a lot of money.

Below you can see the difference in the before and after pictures where we replaced the burner with a new easy operation push rods system, a SS Jet mix tip, updated the register for testing and fit up, then cleaned and painted the unit.

Below you can see the difference in the before and after pictures where we refurbish our customers’ existing pilots, which were over 18 years old, and saved our customer thousands of dollars. The refurb consisted of replacing/repairing the following:
  • New 310SS Heavy Duty Windshields with Bolt & Nut, SS
  • New Thermowells, 446SS
  • New Ignitor Plugs High Energy
  • New M. I. Cables
  • New 24V Excitor Housing (NEMA 4X (SS), with Internal Exciter & Radiation Shield
  • New Jet Holder Assemblies, SS
  • New Gas Jets, SS
  • New Gas Jet Nipples, SS
  • New Air Adjusters with (2) Set Screws
  • New Air Adjuster Rainhoods & Clips
  • (2) Thermocouple Tube Fittings
  • Removing Ignitor Pipe & Brackets
  • Cleaning Pilot Assemblies
Jet Holder Assemblies
New Gas Jets
With over 100 years of experience NAO has earned a worldwide reputation for reliability and trouble-free performance.