Encapsulated thermostatic element for domestic hot water recirculation. Stainless steel 303 body, maximum operating pressure 1379 kPa (200 psig), temperature differential 12 °C (53.6 °F) less than closing temperature, female NPT fittings. 13 to 50 mm Ø available.
NSF/ANSI 61, IAPMO, AB1953
Minimum temperature in accordance to Plumbing code for recirculation 55.2 °C (131 °F).