Medical Gas

Commercial installation of medical gas lines, including medical air, nitrous oxide, oxygen, and vaccuum lines. Specializing in dental offices, hospitals, veterinary offices, and surgical centers. Licensed and credentialed installation.

Sewer Service

Minor and major sewer repairs, including coordinating all trades necessary to complete your project.

Water Heaters

Commercial water heater diagnostic consultations, replacements and repairs.


ADA consultation and upgrades to bring property to compliance.

Water and Gas Lines

Location and repair of leaks, replacement of faulty lines, installation of new lines, and rerouting.


Backflow repairs and installations.

About us

Richard L. Allen, company President, has been in business since 1984. Master Plumber License #M14517. We employ licensed plumbers, medical gas endorsed, and licensed apprentices. R L Allen Plumbing Co. Inc. has established itself as a leading and reliable provider of plumbing services for the Dallas / Ft. Worth Metroplex area. We employ knowledgeable, licensed plumbers to ensure that work is done right the first time.


We have strong, positive relationships with our vendors. These vendors are crucial to competitive pricing and timely delivery of materials — essential to keep projects under budget and delivered ahead of schedule.