The stainless steel version of the remarkable Armstrong Trap Valve Station (TVS) gives you two piston-style isolation valves, a test valve and an integral stainless steel strainer with blowdown valve—all merged in a single, versatile package that takes up only 5 inches! What’s more, the unique Armstrong connector makes the TVS compatible with all of these:

• Inverted bucket
• Disc
• Thermostatic
• Thermostatic wafer
• Bimetallic
• Float and thermostatic
• Two-bolt steam traps from other manufacturers

The innovation is integration

The Armstrong TVS makes what used to be long, complicated steam installation stories short and sweet. It compacts installations by integrating components.

For example, here’s an old description for a typical installation: valve-nipple-strainer-nipple-trap-nipple-valve. It’s a long tale, even for this simple piping arrangement. The TVS rewrites this steam story: pipe-TVS-pipe. The TVS makes it all one, delivering the functions of multiple components in a dramatically smaller and smarter unit.

• Reduced costs. TVS saves by eliminating potential leak points and reducing installation and maintenance time.
• Simplicity. Eliminates procurement and assembly of many individual components.
• Multiple functions. TVS has test and strainer blowdown valves, as well as the ability to accommodate TrapAlert^™ and SteamEye^®—remote steam trap monitoring and testing devices.
• Reduced design time. Permits combining products with exact face-to-face dimensions.
• Three-year guarantee. The TVS is guaranteed for three years.
• Easy, in-line repairability with maximum safety. TVS allows isolation at point of service with upstream/downstream depressurization. Removal of two bolts allows the steam trap to be serviced.
• Installation versatility. The TVS is adaptable to any manufacturer’s two-bolt steam trap and piping configuration.
• Simplified trap testing. You get enhanced capability to check trap operation and a built-in method to block and bleed traps.

The power of the piston

The TVS partner of the steam trap in efficiency is the piston valve. It is a seatless valve that includes two graphite and stainless steel valve seating rings that seal the stem and function as a valve seat. This combination provides long-term protection against leaks to the atmosphere and downstream piping. The piston valve also delivers the following benefits:

• Self-cleaning action. The stainless steel piston slides without rotating between the two valve sealing rings, preventing dirt from damaging the sealing surfaces.
• Sealing integrity. Flexible disc springs automatically provide leak tightness by exerting pressure that keeps the upper and lower valve sealing rings compressed at all times. Compression of the sealing rings against the piston and valve body assures sealing tightness. This combination of disc springs and dual valve seal rings protects against expansion and contraction due to heating and cooling, assuring dependable operation, even after years of service.
• Protected valve stem. The valve stem and sealing surfaces are completely protected from dirt and corrosion by the stem cap, whether in an open or closed position.
• In-line repairability. All valve components may be easily repaired in-line.
• Long-term operation. The design of the piston assures actuation even after many years without operation.

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