Fire Sprinklers


Fire Extinguishers


Supression Systems


Hood Cleaning


Underground Utilities





Use this page to view and learn about all of the services that Double D Piping provides to individuals and businesses within our service area.

Fire Extinguishers

fire-extinguishersPortable hand held extinguishers and wheeled units:

It’s important to keep fire extinguishers serviced by a reputable licensed technician for boats, vehicles, commercial buildings, industrial facilities, day care centers, and any public access areas that must meet the fire and insurance requirements for life safety.

Our service technicians and fire system specialists carry un-restricted permits and licenses to service all brand name extinguishers. We offer sales, service and installation to meet all hazard requirements in accordance with NFPA 10 and OSHA standards. Our sales department can provide our customers with any brand extinguisher requested.

Fire Sprinklers


Double D Piping, LLC provides total fire sprinkler system services on all types of systems. We offer services including free estimates, design, fabrication, installation, service and repair. No fire sprinkler project is too large, too small or too complex.

In an effort to help keep our customers lives and properties protected by keeping their fire sprinkler systems emergency ready, we offer 24/7 emergency services and comprehensive inspection, testing, and services.

Double D Piping, LLC sprinkler division offers design, installation, services, and preventative maintenance on the following:

Emergency Lighting


The NFPA 101-NFPA 70 and OSHA 29cfr1910 standards require that all emergency/exit lighting be 90 minute tested on an annual maintenance schedule and a monthly “quick test” completed and documented. Our technicians are certified in all brands of emergency/exit lighting services, sales and installations. We carry a full line of replacement batteries, bulbs and replacement parts.



Restaurant Suppression System

restaurant-suppression-systemDouble D Piping, LLC can provide sales, service and installation per NFPA 17a: Standard for Wet Chemical Extinguishing Systems.  We provide this service for all brand name systems including, but not limited to, Ansul, Pyro-Chem, Pro-Tex II, Kitchen Knight, Range Guard, Buckeye, and Kidde.  We will be happy to provide a quote for required semi-annual system inspection packages, new installation and/or system hydro tests.




Commercial & Industrial Suppression Systems


At Double D Piping, LLC we specialize in all types of industrial fire suppression systems including paint booths, dip tanks, storage facilities, and IT rooms requiring clean agent and dry chemical systems.

We have provided new installation for some of the largest corporations as well as the small businesses in our region. We can also provide the drawings for AHJ approval through our in house design office. Call today for a free quote/bid for sales, service and/or installation.



Fire Alarm Services & Monitoring


We have an exclusive partnership with Gallaher & Associates, Inc. located locally in Chattanooga, TN.  Specializing in new installation, service upgrades, repairs, required testing and monitoring services of all types and brands of commercial and residential alarms.




Professional Exhaust Hood Cleaning Services


Most restaurant exhaust hoods are required by local and state standards to be cleaned a minimum of every six months.

It is important that business owners rely on certified exhaust hood cleaning professionals.  Properly cleaned hoods starting from the exhaust motor down through the ducts into the duct and plenum of the hood is essential maintenance for a fire safe system. Business owners should feel confident that they are receiving the service that they are paying for.  Our professional teams will do the job correctly and leave a clean work area every time.

C02 Systems


Carbon dioxide or CO2 is a colorless, odorless, non-conductive gas that suppresses fire without leaving behind any residues after discharge, thus avoiding damage to sensitive equipment. With no agent clean up, there is less downtime after an incident. When properly designed, the carbon dioxide system will suppress fire in Class A, B, and C hazards by displacing the air containing oxygen that supports combustion.

Our specialist can provide bids/quotes, installation, upgrades, inspections and service for all CO2 engineered systems, including hand held and wheel unit extinguishers.




Firestopping is a system used to seal openings and joints in fire-resistance rated wall and/or floor assemblies.

Our specialists are accredited firestop contractors providing firestop solutions for hospitals, industrial and chemical plants, assisted living facilities and more.  We specialize in new construction and/or existing build out jobs.  We will be happy to provide quotes and bids for your projects, large or small.


In House Design


Double D Piping, LLC offers an in-house NICET certified design team capable of providing any size system.

We specialize in schools, government funded projects, and privately owned warehouse buildings.  We work closely with fire protection engineers to assist in generating design intent drawings and also with many local general contractors to help form early design concepts to present to potential owners.

Our design team strives to design systems that fulfill our customers’ needs while meeting all codes and standards involved.  We work closely with local and state A.H.J.’s as well as the customer’s insurance carriers to insure a quick turn around on submitted plans.

Our design office uses Hydra-Tec, a tried and proven software system, to perform everything from hydraulic analysis to complex 3D design.

Underground Utilities & Excavating

underground-utilitiesDouble D Piping, LLC has an underground crew with over 60 years combined experience in underground piping and heavy machinery operation.  We own all of our equipment, which allows us to keep our prices competitive.  We are capable of doing any underground utility jobs, including water mains or gas lines and backflow preventers.




fabricatingDouble D Piping, LLC has a personally designed world-class fire sprinkler fabrication shop capable of fabricating any job, welded or screwed pipe.  Our company has several trained fabrication employees in welding, threading and grooving.  Our facility is capable of producing 450 welded outlets per day.  No job is too large or too small.



Backflow Prevention


Double D Piping, LLC has several certified backflow prevention technicians to perform backflow testing on domestic, irrigation, and wet and dry sprinkler system backflows.

Backflow preventers (a.k.a. cross connections) are mechanical plumbing devices used to prevent the undesirable reversal of the flow of water from its intended direction in any pipeline or plumbing system. Backflow is dangerous because it can allow drinking water in plumbing systems to become contaminated and unusable.

Per the AWWA, domestic and irrigation backflows must be tested annually; and per NFPA 13, wet fire sprinkler system backflows must be tested annually and dry sprinkler system backflows must be tested semiannually.