Automatic and continuous elimination of condensate and air at steam temperature increases system efficiency. Float and thermostatic traps operate on the density principle. A thermostatic vent in the top of the trap allows free passage of air during start-up, and closes near saturation temperature. Condensate fills a float chamber, causing a float to rise, and through a lever mechanism pulls a valve off its seat and opens the orifice of a discharge valve. The opening and closing of the seat provides modulation to handle light or heavy condensate loads. The discharge valve is under condensate water. The water forms a seal that prevents live steam loss. This also prevents the venting of air and non-condensable gases. The accumulation of air and non-condensable gases causes a significant temperature drop. The thermostatic valve in the top of the trap discharges these gases.
Bell & Gossett Hoffman Specialty® Bear Trap® Float and Thermostatic Steam Trap, Series: C Series, 1-1/4 in Nominal, NPT, 8-9/16 in Length, 175 psig, Cast Iron, 377 deg F, 4-1/4 in W x 8-5/16 in H