The Johnson Controls VG2831UN is a heavy-duty 3-way mixing globe valve engineered for precision control in large-scale chilled or hot water hydronic systems

while the included conduit clamp ensures secure electrical terminations for 120/240 Vac contact ratings

Maintaining the structural integrity of the centrifugal fan wheel is essential for preventing motor bearing failure and ensuring proper static pressure balance within the HVAC system

to prevent operational drifting

Watts 0121415 Valve 324846-701 The Johnson Controls VG2831UN isThe Watts 0121415 (Model 40XL Z2 150) is a heavy duty, automatic reseating temperature and pressure relief valve engineered for critical protection in commercial water heating systems. Designed for hot water supply tanks and large scale water heaters, this 3 4" NPT valve features a high grade bronze body and a 5 inch thermostat extension. It is factory set to trip at 150 PSI and 210F, ensuring system integrity by discharging overheated water or excess