requiring both inputs for proper operation

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

As a functional equivalent to the S87K1008/U

Featuring 18-inch leadwire connections located on the same side as the manual opening lever

Precise weight and buoyancy specifications ensure seamless integration with existing Armstrong inverted bucket internal assemblies

Lochinvar & A.O. Smith 100111584 Pump Circulator 320788-704 requiring both inputs for properThe 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.