• Plumbing Services

Plumbing Services
System Design • Installation • 24-hour Service

Industrial • Commercial • Institutional • Residential


Providing expert, cost-effective, commercial plumbing solutions to the St. Louis Metro and out-lying areas.

At Gateway Mechanical, we understand that plumbing systems can play a pivotal role in your success.

Our plumbing contractors have collected their knowledge of plumbing systems to compose a downloadable document which will help you understand what you need to do to keep your plumbing systems safe and secure.

To download a copy of your plumbing White Paper, please complete the form on the right and click submit.

Gateway Mechanical has the experience that counts. The life-long experiences of our Master Plumbers and Project Managers provide a depth of abilities that is among the best in the plumbing industry. Their teams of trained commercial plumbers have completed multiple quality projects with many of St. Louis’ top property management companies and prominent construction projects.

At Gateway Mechanical our highest priority is the dependability and superior construction of your commercial plumbing systems. Let us provide the solution for all of your commercial plumbing needs.

Contact us today and let us demonstrate the difference our exceptional workmanship, competitive pricing and guaranteed craftsmanship can make in all of your commercial plumbing and process piping projects!

We offer twenty- four hour a day, seven days a week, service to meet your emergency needs.

General Contractors know the difficulties that arise from shoddy workmanship and subcontractors who fail to meet the expectations and needs of the projects they manage. General Contractors need commercial plumbing contractors who respect their relationships with them and their commitments to their projects, and also respect their reputations and commitments to the clients they serve.

At Gateway Mechanical we understand and respect these commitments. We know that the quality of our commercial plumbing installations plays a pivotal role in the success of every project with which we are involved. That is why we work to make every plumbing project not only a successful business venture and provide an exceptional product, but we also realize it is the beginning of a long-standing and mutually beneficial relationship with our clients.

Gateway Mechanical fills the needs for a Design-Build” approach to mechanical construction. Utilizing “fast-track” methods, we can provide a Guaranteed System Performance with a Written Guaranteed Price.

Replace Old and Inefficient Equipment

Owners also should consider replacing ancient water heaters, toilets, furnaces, boilers, and other appliances with new high-efficiency or water-saving models.

Protecting Your Health and Safety

Everyone depends on their plumbing and sanitation systems. We seldom think about how well designed and maintained systems are our first line of defense in promoting good health and preventing disease.

State-of-the-art Piping Technology

Gateway Mechanical’s state-of-the-art process piping technology means you’ll receive top quality piping work completed by craftsmen familiar with the techniques necessary to deliver systems of the highest quality. Our process piping services include hot water and steam boilers, chillers and cooling towers, pharmaceutical, food and beverage, fuel systems, compressed air, medical gases, material conveyance and much more.

Quality of Care Plumbing Inspections

Gateway Mechanical Quality of Care Plumbing Inspections are designed to extend the useful life of items and systems we depend upon everyday but seldom think about. Every plumbing item in your facility plays a vital part. A partial list of the items included in a typical plumbing inspection are:
Kitchenettes, counters and cabinets, faucets and sinks, water closet and urinal flush valves, sanitation fixtures, drinking fountains, emergency eyewash, drains and traps, water closet hardware, showers and fixtures, grab bars, doors, and partitions, hand dryers, towel dispensers, hands free faucet and flush valves, water heaters, circulation pumps and controls, mixing and tempering valves, anti-scald devices, sump pumps, water service piping network and valves, piping insulation, pressure reducing valves, backflow devices, fire hose cabinets and hose reels, domestic booster pumps, outdoor faucets and area drains, grates and storm water entries, vent stacks and roof drains.