CLEMCO HOT/COLD TUBE|The Clemco Climate Control Tube allows the blast operator to cool or warm the incoming compressed air to a continuous flow supplied-air respirator. Pressure requirements vary with hose length: 25 ft - 75 ft 90 psi, 100 ft - 125 ft 95 psi, 150 - 200 ft 100 psi. NOTE: Do not exceed 200 ft of respirator hose with this device.