As a functional equivalent to the S87K1008/U

use a T&P relief valve rated for both temperature and pressure

Designed for easy integration into building automation systems

Featuring a balanced valve design

Lochinvar & A.O. Smith 100111584 Pump Circulator 320788-704 As a functional equivalent toThe Lochinvar & A. O. Smith 100111584 Pump Circulator is a critical OEM replacement part designed for high efficiency hydronic heating and domestic hot water systems. Built to withstand the rigorous demands of commercial and residential boilers, this high head circulator pump ensures consistent fluid velocity and thermal distribution across the heat exchanger. It serves as a direct replacement for legacy part numbers such as Lochinvar ARM2801 and A.