providing a substantial discharge path for overpressure protection

This genuine Spence replacement part is fabricated to withstand temperatures up to 750°F (399°C) depending on the valve body material (cast iron or steel)

High Capacity Valve: Rated for up to 100

It is compatible with a wide range of Star and Grill-Max units

As a direct Diversitech 117U5023 cross-reference

Lochinvar & A.O. Smith 100208458 Control Board 320734-701 providing a substantial discharge pathThe Lochinvar & A. O. Smith 100208458 Interface Control Board is a critical genuine OEM replacement designed for professional grade hydronic and domestic hot water systems. This high performance interface control board, also identified by the legacy part number RLY20058, functions as the primary communication bridge between the user interface display and the main integrated boiler control. It ensures precise data transmission for monitoring modulation