Old Number L408J-1009

Provides operating control and automatic high limit protection for vapor heating systems with pressures up to 4 psi

Stainless steel diaphragm for use with liquids, air, noncombustible gases, ammonia, oxygen, distilled water and similar media

Models have Micro Switch snap acting switching to open or close a circuit on pressure rise - 2 to 6 ounce PSI adjustable differential

Clear plastic cover allows observation of the pressure settings - Single pole double throw switching

Mount using 1/4 inch internal pipe threads - Ground screw terminal.