Armstrong matches reliability with advanced piston sealing technology to create the TVS 1100 Series Carbon Steel Trap Valve Station. The compact design of the TVS 1100 includes a single valve operation to greatly reduce the number of potential leaks points. The piston valve technology with dual sealing action ensures long-term protection, durability and actuation even after many years of operation. Standard features such as an integral strainer and a bimetallic air vent eliminate dirt buildup during operation and remove air and condensate during start-up. The TVS 1100 steel steam trap is a long-lasting solution for steam isolation services.