Advance Valve Inc is an ASME Code certified safety relief valve assembler and a National Board certified valve tester and repair specialist. Since 1974, Advance Valve has provided the St. Louis area and the Midwest region with exceptional service, quality valves and valve products. Today, we've expanded to nationwide sales but still provide the same quality service and special attention to each individual order as we always have. Advance Valve started operations in a modest one room office, a garage for a warehouse and the idea that fast delivery and great customer relations would lead to growth. That formula has proven successful and by remaining faithful to it year after year, our customers remain faithful to us. Today we are operating out of an 18,000 square foot facility with room to expand as we continue to grow. Customers are our most valued asset and a good customer/supplier relationship is of the utmost importance to us. To serve your needs quickly, we maintain an extensive inventory of valves from 1/4" to 8" and from brass and iron, to carbon steel and stainless steel. In addition, we carry a large inventory of specialty relief valves. Whether your needs call for standard or custom valves, Advance Valve provides excellence in service and delivery.