Caleffi 521500A Thermostatic and Pressure Balanced Mixing ValveThe Caleffi 521500A Thermostatic and Pressure Balanced Mixing Valve delivers precise, safe temperature control for domestic hot water, hydronic and radiant heating systems. The Caleffi 521500A Thermostatic and Pressure Balanced Mixing Valve combines durable brass construction with accurate mixing to stabilize outlet temperatures across varying supply conditions. Designed for a 3 4" nominal size with end connections as three male threaded ends, it fits

Effective HVAC replacement part that restores steady heat and comfort

and comes in a durable brown finish

long-lasting performance in demanding industrial automation environments

Compatibility: fits AO Smith BTH 300/400/500 commercial gas water heaters

the unit provides 1/6 HP of power from a single-phase supply

) and provides dependable switching for HVAC and industrial systems

providing versatile performance for automation tasks

Durable electronic components built for long service life

pilot-operated diaphragm design for precise shut-off and long life

this kit runs on 25V AC and provides robust switching through the gas valve relay

sensing range for broad compatibility

30-second ignition for fast