Barnes & Jones steam traps for radiators and other similar steam heating equipment, available in 90° angle, straight, or vertical pattern pipe connections. These radiator traps feature a union nipple tailpiece on one side and a female pipe on the other. They are available in 1/2" to 1" pipe sizes and steam operating pressures up to 65 psi. Barnes & Jones radiator traps are the only factory calibrated thermostatic steam traps.