Vaporstat Controller, SPST Make on Pressure Rise, 0-4 Psi, Auto Recycle, Screw Terminals, 1/4" NPT Mount or Surface Mount, 2-16 Oz/In 2 Differential, Stainless Steel Diaphragm

Combination Aquastat and High Limit Controller, 7 Degree ± 4 Degree Differential Temperature, 4" Insulation Depth, 3/4" NPT Well Spud Size, SPST Contacts Break on Temperature Rise, Mounts on a Horizontal Immersion Well in Water Heater Wall, 100-240 Degree Operating Temperature Range, Stop Set at 150 Degree