Armstrong radiator traps are designed for low-pressure steam heating systems. Armstrong Series TS radiator traps are offered in angle patterns, available in either 1/2" or 3/4" pipe connections. The TS-3 is a heavy duty, wafer-type trap for the drainage of all types of steam radiators and convectors. Its wafer design is well suited to systems prone to water hammer, which may damage conventional bellows-type units. The TS-3 is repairable in-line and features an all-stainless steel wafer element. The internal radiator trap thermostat is a long-lasting capsule. Easily replaced, the stainless steel thermostat operates efficiently even in the harshest conditions.