Engineering Services
Service Centers
M & J Valve

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M & J engineering success stems from a 25 year history of ground up valve repair and construction. This provides our customers with 3 unique advantages; Improved performance, increased efficiency, and increased technical capabilities. Our experienced engineers provide a full range of added benefits such as compression optimization, build inspection, design assistance for specific operations, support and recommendations, failure analysis, and more. It's the broadest range of support available and its only from M&J. 

Most popular Engineering Services

OEM Compressor Runs:
M&J Valve’s engineering staff has the experience and training to provide accurate compressor runs using all of the major manufacturer’s performance programs. OEM performance software gives us the capability to correctly size valves for site specific conditions. With 25 years of company history to draw from, we will be ready to help no matter what compressor your running.

  • Ariel
  • Dresser-Rand
  • Ajax
  • Joy
  • GE HSR
  • Worthington
  • Superior

Compressor Fleet Optimization:

When you've got a team of engineers focused on your operation, there's almost nothing you can't accomplish. Every day, M&J's in house engineers trouble shoot repairs, optimize valves for site conditions, and help utilize on hand valve inventory. It's all part of our commitment to build for you the most efficient, reliable, and cost effective compressor fleet possible.

Site Visits:

When times get tough out in the field, M&J Valve is here to help. We have a proven safety record and have never had an incident while on location, so you can have us out to the unit with confidence. Sometimes an extra set of eyes makes all the difference and by going out on location we can gather information to create reports and case studies.

Trouble Shooting:

After 25 years of operation we’ve earned a reputation as a partner to our customers. We treat problems with our customer’s units as our own problems and we won’t rest until these problems are resolved. Drawing on our experience we will custom tailor a solution to your unit to give you the longest lasting, most efficient performance possible. Please see our trouble shooting page if you are looking for further assistance.

OEM Engineering Support:

M&J Valve has the full support of our vendors so you get the OEM quality service from your local repair shop. As a distributor for the major compressor brands, M&J Valve has total access to OEM documentation and engineering services.

Custom Valve Design:

From correcting inherent weaknesses in design, to updating old parts to utilize current technology, if you can dream it up we can make it happen. M & J engineering has state of the art CAD/CAM software that enables us to design any style valve for any application. We also produce a complete line of M&J Brand valves to fit a wide range of replacement options, offering outstanding quality for specific operations. Give us a call today and let’s see what we can create together.


  • Ajax
  • Superior
  • Clarks
  • Worthington
  • Coopers
  • Pennjax
  • Gardner Denver
  • Atlas Copco
  • Ingersoll Rand
  • Chicago Pneumatic
  • Knox Western
  • And more
  • Joy

Our Partners

  • ajax

    chicago pneumatic
  • cooper-bessemer


  • leroi

  • clark

  • knox western