Remove the spring cap and turn the adjustment ferrule clockwise to compress the spring and increase pressure

or an oversized furnace for the existing ductwork

Once the plenum temperature drops to a stable 110°F

though specific mounting configurations may vary by application

Calibrated to a 340°F activation temperature

Maxitrol BV602-3/4 Ball Valve Remove the spring cap andThe Maxitrol BV602 3 4 is a professional grade 3 4" NPT Manual Shutoff Ball Valve engineered for reliable isolation in gas, water, oil, and steam systems. Built with a robust forged brass body and featuring a hard chrome plated ball, this one piece valve is designed for high cycle durability and minimal friction. The innovative hollow ball design reduces the overall weight on the valve seats by up to 20%, significantly extending the service life