Valve Vaults and ARV Manholes


LFM manufactures fiberglass enclosures for air relief valves (ARV manholes) as well as valve vaults for use in wastewater lift stations. LFM’s ARV manholes and valve vaults are lightweight, stackable, and can be easily shipped to job site locations. We utilize the latest equipment, providing our customers with the highest quality fiberglass products on the market today.

Headquartered in Giddings, Texas, LFM maintains production facilities across the United States to provide timely service to customers operating in isolated areas. No matter what water or wastewater challenge you face, LFM can guide you through the entire scope of your project. From CADD services for custom applications through technical support, budgetary estimates, mold fabrication, transportation, and field service after delivery, we are here to serve you.

Quality Built Right In

LFM incorporates a comprehensive in-plant testing program. Our quality control enables us to provide our customers with consistent workmanship in every fiberglass ARV manhole and valve vault that we build. We inspect and test each product before it is released for shipping. Wall thickness reports, raw material analysis, and continuous chemical analysis reports are just some of the test procedures that we perform. Testing reports are recorded and maintained at our office, and are available upon request.


Fiberglass ARV manholes and valve vaults by LFM represent a real value for our customers. Our fiberglass products have a longer service life than the same products made from concrete. As a result, the cost of repairs, disruptive excavations, and maintenance is minimized. This saves you money over the long run. Our ARV manholes and valve vaults are also light-weight, making them easier to handle. This means easier, safer, faster, and less costly installations.

Corrosion Resistant

Our ARV manholes and valve vaults are corrosion resistant to wastewater gases such as hydrogen sulfide. Over a short period of time, concrete products can start to leak or decay. Fiberglass ARV manholes and valve vaults by LFM can withstand years of exposure to the most severe conditions within a wastewater system.

Professional Delivery

LFM maintains its own fleet of delivery trucks; helping to lower delivery costs considerably. Our fiberglass wetwells are light-weight and can be more easily loaded and unloaded on construction job sites than conventional concrete wetwells. Our delivery personnel see to it that our products are shipped on time and safely to their destination.

Quality Assurance

At LFM, we stand behind the products we build. Our fiberglass ARV manholes and valve vaults carry a one-year warranty. Speak to your LFM sales representative for complete details.