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Founded In: 1916
Size: 100-249 Employees
Annual Vol: Not Provided

Our Story

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The Contractor Members of Sprinkler Fitters Local 550 work on many commercial/residential facilities in and around the Greater Boston Region.

Sprinkler Fitters and Apprentices Local Union 550 is dedicated to the education and training of its members. We strive to stay abreast of the continual evolution of fire sprinkler systems and fire safety regulations. Our Journeymen and Apprentices are among the best trained in the world. Continuing Education classes are offered on a regular basis to our Journeymen to keep them abreast of changes and trends in the sprinkler industry through a telecommunications link to the United Association. In addition, our apprentices are given hands on training in our state of the art valve rooms, CAD instruction in our computer lab, as well as classroom instruction. This training assures that our contractors and end-users get the ‘best and the brightest’ to design, install and service a quality fire protection system. No matter how big or small the project, our members work safely, proudly, reliably and quickly ensuring that the fire protection system will operate correctly every time and that projects remain on-budget.

Specializing in the following: 


  • Fire Safety Laws
  • Commericial / Residential
  • Design / Installation / Inspection / Repair
  • Sprinklers FM200 / Inergen
  • Special Hazards
  • Licensed & Insured Contractors
  • 24 Hour Emergency Service

Installation, Service, Testing & Inspection for the following systems:

Fire Pumps Pre-Action Systems 
Wet Systems Chemical (Inergen & FM-200)
Dry Systems Foam Systems

What We Do

Products/Services Relating to Fire Sprinkler Systems
Products/Services Relating to Associations
Products/Services Relating to Fire Protection Equipment & Systems

Project Experience

Service Sector:
Public Private
Apartments & Condominiums
Mixed Use
Single Family Residential

Service Areas

Associations & Memberships

Member of Sprinkler Fitters & Apprentices Local 550 Sprinkler Fitters & Apprentices Local 550
Member of NESPTA (New England States Pipe Trades Assn.) NESPTA (New England States Pipe Trades Assn.)
Member of NFSA (National Fire Sprinkler Assn.) NFSA (National Fire Sprinkler Assn.)
Member of Plumbers & Pipefitters Union Plumbers & Pipefitters Union
Member of United Assn. of Plumbers Pipefitters & Sprinkler Fitters United Assn. of Plumbers Pipefitters & Sprinkler Fitters
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